this-week-in-rust - Tumblr blog

this-week-in-rust · 20 days ago

Text

This Week in Rust 600

Hello and welcome to another issue of This Week in Rust! Rust is a programming language empowering everyone to build reliable and efficient software. This is a weekly summary of its progress and community. Want something mentioned? Tag us at @thisweekinrust.bsky.social on Bluesky or @ThisWeekinRust on mastodon.social, or send us a pull request. Want to get involved? We love contributions.

This Week in Rust is openly developed on GitHub and archives can be viewed at this-week-in-rust.org. If you find any errors in this week’s issue, please submit a PR.

Want TWIR in your inbox? Subscribe here.

Updates from Rust Community

Official

Announcing Rust 1.87.0 and ten years of Rust!

Foundation

Celebrating Rust’s Birthday with Karen Tölva: Creator of Ferris the Rustacean!

Project/Tooling Updates

Announcing Markdown Ninja: Open Source alternative to Substack, Mailchimp and Netlify

Hypervisor as a Library

Observations/Thoughts

Rust turns 10

Rust 1.0, ten years later

Evolution of Rust compiler errors

For your eyes only

Disable debuginfo to improve Rust compile times

async/await versus the Calloop Model

[audio] Astral with Charlie Marsh

Rust Walkthroughs

Unlocking Tokio’s Hidden Gems: Determinism, Paused Time, and Local Execution

Joining threads immediately as they finish in Rust

[video] Build with Naz : Rust, Memory performance & latency - locality, access, allocate, cache lines

Miscellaneous

Scanner- The Team Accelerating Log Analysis With Rust

$20,000 rav1d AV1 Decoder Performance Bounty

From C# to Rust: A 42-Day Developer Challenge

Crate of the Week

This week’s crate is makepad, an in development shader based live designable OSS UI-Framework.

Thanks to crazust for the suggestion!

Please submit your suggestions and votes for next week!

Calls for Testing

An important step for RFC implementation is for people to experiment with the implementation and give feedback, especially before stabilization.

If you are a feature implementer and would like your RFC to appear in this list, add a call-for-testing label to your RFC along with a comment providing testing instructions and/or guidance on which aspect(s) of the feature need testing.

No calls for testing were issued this week by Rust, Rust language RFCs or Rustup.

Call for Participation; projects and speakers

CFP - Projects

Always wanted to contribute to open-source projects but did not know where to start? Every week we highlight some tasks from the Rust community for you to pick and get started!

Some of these tasks may also have mentors available, visit the task page for more information.

No Calls for participation were submitted this week.

If you are a Rust project owner and are looking for contributors, please submit tasks here or through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

CFP - Events

Are you a new or experienced speaker looking for a place to share something cool? This section highlights events that are being planned and are accepting submissions to join their event as a speaker.

No Calls for papers or presentations were submitted this week.

If you are an event organizer hoping to expand the reach of your event, please submit a link to the website through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

Updates from the Rust Project

353 pull requests were merged in the last week

Compiler

improve dangerous_implicit_aurorefs diagnostic output

improve ternary operator recovery

perf: fast path for register_region_obligation

Library

add std::io::Seek instance for std::io::Take

optimize ToString implementation for integers

stop using TLS in signal handler

stabilize #![feature(non_null_from_ref)]

stabilize the avx512 target features

Cargo

cargo: allow configuring arbitrary codegen backends

cargo: feat: skip publish=false pkg when publishing entire workspace

cargo: stabilize doctest-xcompile

Clippy

comparison_chain: do not lint on 2 blocks expression

empty_struct_with_brackets: do not lint code coming from macro expansion

excessive_precision: Fix false positive when exponent has leading zero

match_same_arms, ifs_same_cond: lint once per same arm/condition

needless_match: do not pretend that return is not significant in an expression

unnecessary_wraps: do not include the whole body in the lint span

add new useless_concat lint

add the allow_exact_repetitions option to the module_name_repetititions lint

check if dropping an expression may have indirect side-effects

useless_as_ref: do not call TyCtxt::type_of() on a trait

fix ICE while computing type layout

fix false positive of useless_conversion when using .into_iter().any()

fix: unnecessary_to_owned false positive when map key is a reference

make lint span smaller for needless return

post non_std_lazy_statics type warnings onto the right node

reenable linting on UFCS deref calls

rewrite non_copy_const

use interned symbols instead of strings in more places

Rust-Analyzer

debounce workspace fetching for workspace structure changes

highlight unsafe operations

don’t allow duplicate crates in the all_crates list

improve asm support

removing all unused imports removes used imports for imports used for Derive macros

request cancellation while processing changed files

Rust Compiler Performance Triage

A relatively quiet week, likely caused by not that many PRs being merged as many contributors were at RustWeek and the All Hands event. There were several nice wins in trait solving; the benchmark suite now contains benchmarks that use the new trait solver, so we can now focus on optimizing its performance in the near future.

Triage done by @kobzol.

Revision range: 718ddf66..59372f2c

Summary:

(instructions:u) mean range count Regressions ❌ (primary) 0.6% [0.1%, 1.8%] 25 Regressions ❌ (secondary) 0.9% [0.1%, 3.1%] 23 Improvements ✅ (primary) -0.3% [-0.6%, -0.1%] 33 Improvements ✅ (secondary) -2.2% [-9.2%, -0.1%] 26 All ❌✅ (primary) 0.1% [-0.6%, 1.8%] 58

2 Regressions, 5 Improvements, 3 Mixed; 3 of them in rollups 41 artifact comparisons made in total

Full report here.

Approved RFCs

Changes to Rust follow the Rust RFC (request for comments) process. These are the RFCs that were approved for implementation this week:

No RFCs were approved this week.

Final Comment Period

Every week, the team announces the ‘final comment period’ for RFCs and key PRs which are reaching a decision. Express your opinions now.

Tracking Issues & PRs

Rust

Tracking Issue for AVX512 intrinsics

rustdoc: on mobile, make the sidebar full width and linewrap

No Items entered Final Comment Period this week for Cargo, Rust RFCs, Language Reference, Language Team or Unsafe Code Guidelines.

Let us know if you would like your PRs, Tracking Issues or RFCs to be tracked as a part of this list.

New and Updated RFCs

No New or Updated RFCs were created this week.

Upcoming Events

Rusty Events between 2025-05-21 - 2025-06-18 🦀

Virtual

2025-05-21 | Hybrid (Vancouver, BC, CA) | Vancouver Rust

Linking

2025-05-22 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-05-22 | Virtual (Girona, ES) | Rust Girona

Sessió setmanal de codificació / Weekly coding session

2025-05-25 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-05-27 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Fourth Tuesday

2025-05-27 | Virtual (Tel Aviv, IL) | Code Mavens 🦀 - 🐍 - 🐪

Rust at Work - conversation with Eli Shalom & Igal Tabachnik of Eureka Labs

2025-05-29 | Virtual (Nürnberg, DE) | Rust Nuremberg

Rust Nürnberg online

2025-05-29 | Virtual (Tel Aviv-yafo, IL) | Rust 🦀 TLV

שיחה חופשית ווירטואלית על ראסט

2025-06-01 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-06-03 | Virtual (Tel Aviv-yafo, IL) | Rust 🦀 TLV

Why Rust? למה ראסט? -

2025-06-04 | Virtual (Indianapolis, IN, US) | Indy Rust

Indy.rs - with Social Distancing

2025-06-05 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-06-07 | Virtual (Kampala, UG) | Rust Circle Meetup

Rust Circle Meetup

2025-06-08 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-06-10 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Second Tuesday

2025-06-10 | Virtual (London, UK) | Women in Rust

👋 Community Catch Up

2025-06-12 | Virtual (Charlottesville, VA, US) | Charlottesville Rust Meetup

Meet, swap, and learn!

2025-06-15 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-06-17 | Virtual (Washington, DC, US) | Rust DC

Mid-month Rustful

2025-06-18 | Hybrid (Vancouver, BC, CA) | Vancouver Rust

Rust Study/Hack/Hang-out

Asia

2025-05-24 | Bangalore/Bengaluru, IN | Rust Bangalore

May 2025 Rustacean meetup

2025-06-08 | Tel Aviv-yafo, IL | Rust 🦀 TLV

In person Rust June 2025 at AWS in Tel Aviv

Europe

2025-05-22 | Augsburg, DE | Rust Augsburg

Rust meetup #13:A Practical Guide to Telemetry in Rust

2025-05-22 | Bern, CH | Rust Bern

2025 Rust Talks Bern #3 @zentroom

2025-05-22 | Paris, FR | Rust Paris

Rust meetup #77

2025-05-22 | Stockholm, SE | Stockholm Rust

Rust Meetup @UXStream

2025-05-27 | Basel, CH | Rust Basel

Rust Meetup #11 @ Letsboot Basel

2025-05-27 | Vienna, AT | Rust Vienna

Rust Vienna - May at Bitcredit 🦀

2025-05-28 | Frankfurt, DE | Rust Rhein-Main

Marcel Koch and the (un)holy Trinity of Flutter, Rust and C

2025-05-29 | Oslo, NO | Rust Oslo

Rust Hack'n'Learn at Kampen Bistro

2025-05-31 | Stockholm, SE | Stockholm Rust

Ferris’ Fika Forum #12

2025-06-04 | Ghent, BE | Systems Programming Ghent

Grow smarter with embedded Rust

2025-06-04 | München, DE | Rust Munich

Rust Munich 2025 / 2 - Hacking Evening

2025-06-04 | Oxford, UK | Oxford Rust Meetup Group

Oxford Rust and C++ social

2025-06-05 | München, DE | Rust Munich

Rust Munich 2025 / 2 - Hacking Evening

2025-06-11 | Reading, UK | Reading Rust Workshop

Reading Rust Meetup

2025-06-17 | Leipzig, SN, DE | Rust - Modern Systems Programming in Leipzig

Topic TBD

North America

2025-05-21 | Hybrid (Vancouver, BC, CA) | Vancouver Rust

Linking

2025-05-23 | Boston, MA, US | Boston Rust Meetup

Seaport Rust Lunch, May 23

2025-05-28 | Albuquerque, NM, US | At Ideas and Coffee

Intro Level Rust Get-together

2025-05-28 | Austin, TX, US | Rust ATX

Rust Lunch - Fareground

2025-05-29 | Atlanta, GA, US | Rust Atlanta

Rust-Atl

2025-05-29 | Mountain View, CA, US | Hacker Dojo

RUST MEETUP at HACKER DOJO

2025-05-31 | Boston, MA, US | Boston Rust Meetup

Harvard Square Rust Lunch, May 31

2025-06-05 | Saint Louis, MO, US | STL Rust

Leptos web framework

2025-06-08 | Boston, MA, US | Boston Rust Meetup

Boston University Rust Lunch, June 8

2025-06-17 | San Francisco, CA, US | San Francisco Rust Study Group

Rust Hacking in Person

2025-06-18 | Hybrid (Vancouver, BC, CA) | Vancouver Rust

Rust Study/Hack/Hang-out

Oceania

2025-06-16 | Christchurch, NZ | Christchurch Rust Meetup Group

Christchurch Rust Meetup

South America

2025-05-31 | São Paulo, BR | Rust São Paulo Meetup

Encontro do Rust-SP na WillBank

2025-06-04 | Montevideo, DE, UY | Rust Meetup Uruguay

Primera meetup de Rust de 2025!

If you are running a Rust event please add it to the calendar to get it mentioned here. Please remember to add a link to the event too. Email the Rust Community Team for access.

Jobs

Please see the latest Who’s Hiring thread on r/rust

Quote of the Week

/proc/self/mem is outside the scope of rust’s safety guarantees. otherwise this would open a can of worms that could not be closed except by forbidding debuggers from poking memory or marking every impure function as unsafe.

like, what if you invoke gdb to poke memory? what if you modify .bash_profile to poke memory? what if you send an http request to a hypervisor to poke memory? what if you run a spin loop, and the noise of the fans whirring up activates a beam of ionizing radiation pointed directly at the CPU? what if opening the disk drive makes the computer fall off a cliff?

– binarycat on rust-internals

Thanks to Chayim Refael Friedman for the suggestion!

Please submit quotes and vote for next week!

This Week in Rust is edited by: nellshamrell, llogiq, cdmistman, ericseppanen, extrawurst, U007D, joelmarcey, mariannegoldin, bennyvasquez, bdillo

Email list hosting is sponsored by The Rust Foundation

Discuss on r/rust

#rust-lang #rust #rustlang #twir #long post

1 note · View note

this-week-in-rust · 27 days ago

Text

This Week in Rust 600

This Week in Rust is openly developed on GitHub and archives can be viewed at this-week-in-rust.org. If you find any errors in this week's issue, please submit a PR.

Want TWIR in your inbox? Subscribe here.

Updates from Rust Community

Official

Announcing Rust 1.87.0 and ten years of Rust!

Foundation

Celebrating Rust’s Birthday with Karen Tölva: Creator of Ferris the Rustacean!

Project/Tooling Updates

Announcing Markdown Ninja: Open Source alternative to Substack, Mailchimp and Netlify

Hypervisor as a Library

Observations/Thoughts

Rust turns 10

Rust 1.0, ten years later

Evolution of Rust compiler errors

For your eyes only

Disable debuginfo to improve Rust compile times

async/await versus the Calloop Model

[audio] Astral with Charlie Marsh

Rust Walkthroughs

Unlocking Tokio's Hidden Gems: Determinism, Paused Time, and Local Execution

Joining threads immediately as they finish in Rust

[video] Build with Naz : Rust, Memory performance & latency - locality, access, allocate, cache lines

Miscellaneous

Scanner- The Team Accelerating Log Analysis With Rust

$20,000 rav1d AV1 Decoder Performance Bounty

From C# to Rust: A 42-Day Developer Challenge

Crate of the Week

This week's crate is makepad, an in development shader based live designable OSS UI-Framework.

Thanks to crazust for the suggestion!

Please submit your suggestions and votes for next week!

Calls for Testing

An important step for RFC implementation is for people to experiment with the implementation and give feedback, especially before stabilization.

No calls for testing were issued this week by Rust, Rust language RFCs or Rustup.

Call for Participation; projects and speakers

CFP - Projects

Always wanted to contribute to open-source projects but did not know where to start? Every week we highlight some tasks from the Rust community for you to pick and get started!

Some of these tasks may also have mentors available, visit the task page for more information.

No Calls for participation were submitted this week.

If you are a Rust project owner and are looking for contributors, please submit tasks here or through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

CFP - Events

Are you a new or experienced speaker looking for a place to share something cool? This section highlights events that are being planned and are accepting submissions to join their event as a speaker.

No Calls for papers or presentations were submitted this week.

If you are an event organizer hoping to expand the reach of your event, please submit a link to the website through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

Updates from the Rust Project

353 pull requests were merged in the last week

Compiler

improve dangerous_implicit_aurorefs diagnostic output

improve ternary operator recovery

perf: fast path for register_region_obligation

Library

add std::io::Seek instance for std::io::Take

optimize ToString implementation for integers

stop using TLS in signal handler

stabilize #![feature(non_null_from_ref)]

stabilize the avx512 target features

Cargo

cargo: allow configuring arbitrary codegen backends

cargo: feat: skip publish=false pkg when publishing entire workspace

cargo: stabilize doctest-xcompile

Clippy

comparison_chain: do not lint on 2 blocks expression

empty_struct_with_brackets: do not lint code coming from macro expansion

excessive_precision: Fix false positive when exponent has leading zero

match_same_arms, ifs_same_cond: lint once per same arm/condition

needless_match: do not pretend that return is not significant in an expression

unnecessary_wraps: do not include the whole body in the lint span

add new useless_concat lint

add the allow_exact_repetitions option to the module_name_repetititions lint

check if dropping an expression may have indirect side-effects

useless_as_ref: do not call TyCtxt::type_of() on a trait

fix ICE while computing type layout

fix false positive of useless_conversion when using .into_iter().any()

fix: unnecessary_to_owned false positive when map key is a reference

make lint span smaller for needless return

post non_std_lazy_statics type warnings onto the right node

reenable linting on UFCS deref calls

rewrite non_copy_const

use interned symbols instead of strings in more places

Rust-Analyzer

debounce workspace fetching for workspace structure changes

highlight unsafe operations

don't allow duplicate crates in the all_crates list

improve asm support

removing all unused imports removes used imports for imports used for Derive macros

request cancellation while processing changed files

Rust Compiler Performance Triage

Triage done by @kobzol.

Revision range: 718ddf66..59372f2c

Summary:

2 Regressions, 5 Improvements, 3 Mixed; 3 of them in rollups 41 artifact comparisons made in total

Full report here.

Approved RFCs

Changes to Rust follow the Rust RFC (request for comments) process. These are the RFCs that were approved for implementation this week:

No RFCs were approved this week.

Final Comment Period

Every week, the team announces the 'final comment period' for RFCs and key PRs which are reaching a decision. Express your opinions now.

Tracking Issues & PRs

Rust

Tracking Issue for AVX512 intrinsics

rustdoc: on mobile, make the sidebar full width and linewrap

No Items entered Final Comment Period this week for Cargo, Rust RFCs, Language Reference, Language Team or Unsafe Code Guidelines.

Let us know if you would like your PRs, Tracking Issues or RFCs to be tracked as a part of this list.

New and Updated RFCs

No New or Updated RFCs were created this week.

Upcoming Events

Rusty Events between 2025-05-21 - 2025-06-18 🦀

Virtual

2025-05-21 | Hybrid (Vancouver, BC, CA) | Vancouver Rust

Linking

2025-05-22 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-05-22 | Virtual (Girona, ES) | Rust Girona

Sessió setmanal de codificació / Weekly coding session

2025-05-25 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-05-27 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Fourth Tuesday

2025-05-27 | Virtual (Tel Aviv, IL) | Code Mavens 🦀 - 🐍 - 🐪

Rust at Work - conversation with Eli Shalom & Igal Tabachnik of Eureka Labs

2025-05-29 | Virtual (Nürnberg, DE) | Rust Nuremberg

Rust Nürnberg online

2025-05-29 | Virtual (Tel Aviv-yafo, IL) | Rust 🦀 TLV

שיחה חופשית ווירטואלית על ראסט

2025-06-01 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-06-03 | Virtual (Tel Aviv-yafo, IL) | Rust 🦀 TLV

Why Rust? למה ראסט? -

2025-06-04 | Virtual (Indianapolis, IN, US) | Indy Rust

Indy.rs - with Social Distancing

2025-06-05 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-06-07 | Virtual (Kampala, UG) | Rust Circle Meetup

Rust Circle Meetup

2025-06-08 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-06-10 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Second Tuesday

2025-06-10 | Virtual (London, UK) | Women in Rust

👋 Community Catch Up

2025-06-12 | Virtual (Charlottesville, VA, US) | Charlottesville Rust Meetup

Meet, swap, and learn!

2025-06-15 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-06-17 | Virtual (Washington, DC, US) | Rust DC

Mid-month Rustful

2025-06-18 | Hybrid (Vancouver, BC, CA) | Vancouver Rust

Rust Study/Hack/Hang-out

Asia

2025-05-24 | Bangalore/Bengaluru, IN | Rust Bangalore

May 2025 Rustacean meetup

2025-06-08 | Tel Aviv-yafo, IL | Rust 🦀 TLV

In person Rust June 2025 at AWS in Tel Aviv

Europe

2025-05-22 | Augsburg, DE | Rust Augsburg

Rust meetup #13:A Practical Guide to Telemetry in Rust

2025-05-22 | Bern, CH | Rust Bern

2025 Rust Talks Bern #3 @zentroom

2025-05-22 | Paris, FR | Rust Paris

Rust meetup #77

2025-05-22 | Stockholm, SE | Stockholm Rust

Rust Meetup @UXStream

2025-05-27 | Basel, CH | Rust Basel

Rust Meetup #11 @ Letsboot Basel

2025-05-27 | Vienna, AT | Rust Vienna

Rust Vienna - May at Bitcredit 🦀

2025-05-28 | Frankfurt, DE | Rust Rhein-Main

Marcel Koch and the (un)holy Trinity of Flutter, Rust and C

2025-05-29 | Oslo, NO | Rust Oslo

Rust Hack'n'Learn at Kampen Bistro

2025-05-31 | Stockholm, SE | Stockholm Rust

Ferris' Fika Forum #12

2025-06-04 | Ghent, BE | Systems Programming Ghent

Grow smarter with embedded Rust

2025-06-04 | München, DE | Rust Munich

Rust Munich 2025 / 2 - Hacking Evening

2025-06-04 | Oxford, UK | Oxford Rust Meetup Group

Oxford Rust and C++ social

2025-06-05 | München, DE | Rust Munich

Rust Munich 2025 / 2 - Hacking Evening

2025-06-11 | Reading, UK | Reading Rust Workshop

Reading Rust Meetup

2025-06-17 | Leipzig, SN, DE | Rust - Modern Systems Programming in Leipzig

Topic TBD

North America

2025-05-21 | Hybrid (Vancouver, BC, CA) | Vancouver Rust

Linking

2025-05-23 | Boston, MA, US | Boston Rust Meetup

Seaport Rust Lunch, May 23

2025-05-28 | Albuquerque, NM, US | At Ideas and Coffee

Intro Level Rust Get-together

2025-05-28 | Austin, TX, US | Rust ATX

Rust Lunch - Fareground

2025-05-29 | Atlanta, GA, US | Rust Atlanta

Rust-Atl

2025-05-29 | Mountain View, CA, US | Hacker Dojo

RUST MEETUP at HACKER DOJO

2025-05-31 | Boston, MA, US | Boston Rust Meetup

Harvard Square Rust Lunch, May 31

2025-06-05 | Saint Louis, MO, US | STL Rust

Leptos web framework

2025-06-08 | Boston, MA, US | Boston Rust Meetup

Boston University Rust Lunch, June 8

2025-06-17 | San Francisco, CA, US | San Francisco Rust Study Group

Rust Hacking in Person

2025-06-18 | Hybrid (Vancouver, BC, CA) | Vancouver Rust

Rust Study/Hack/Hang-out

Oceania

2025-06-16 | Christchurch, NZ | Christchurch Rust Meetup Group

Christchurch Rust Meetup

South America

2025-05-31 | São Paulo, BR | Rust São Paulo Meetup

Encontro do Rust-SP na WillBank

2025-06-04 | Montevideo, DE, UY | Rust Meetup Uruguay

Primera meetup de Rust de 2025!

If you are running a Rust event please add it to the calendar to get it mentioned here. Please remember to add a link to the event too. Email the Rust Community Team for access.

Jobs

Please see the latest Who's Hiring thread on r/rust

Quote of the Week

/proc/self/mem is outside the scope of rust's safety guarantees. otherwise this would open a can of worms that could not be closed except by forbidding debuggers from poking memory or marking every impure function as unsafe.

– binarycat on rust-internals

Thanks to Chayim Refael Friedman for the suggestion!

Please submit quotes and vote for next week!

This Week in Rust is edited by: nellshamrell, llogiq, cdmistman, ericseppanen, extrawurst, U007D, joelmarcey, mariannegoldin, bennyvasquez, bdillo

Email list hosting is sponsored by The Rust Foundation

Discuss on r/rust

#rust-lang #rust #rustlang #twir #long post

1 note · View note

this-week-in-rust · 1 month ago

Text

This Week in Rust 599

This Week in Rust is openly developed on GitHub and archives can be viewed at this-week-in-rust.org. If you find any errors in this week’s issue, please submit a PR.

Want TWIR in your inbox? Subscribe here.

Updates from Rust Community

Official

Announcing Google Summer of Code 2025 selected projects

Foundation

10 Years of Stable Rust: An Infrastructure Story

Newsletters

This Month in Rust OSDev: April 2025 | Rust OSDev

The Embedded Rustacean Issue #45

Project/Tooling Updates

Avian Physics 0.3

Two months in Servo: CSS nesting, Shadow DOM, Clipboard API, and more

Cot v0.3: Even Lazier

Streaming data analytics, Fluvio 0.17.3 release

CGP v0.4 is Here: Unlocking Easier Debugging, Extensible Presets, and More

Rama v0.2

Observations/Thoughts

Bad Type Patterns - The Duplicate duck

Rust nightly features you should watch out for

Lock-Free Rust: How to Build a Rollercoaster While It’s on Fire

Simple & type-safe localization in Rust

From Rust to AVR assembly: Dissecting a minimal blinky program

Tarpaulins Week Of Speed

Rustls Server-Side Performance

Is Rust the Future of Programming?

Rust Walkthroughs

Functional asynchronous Rust

The Power of Compile-Time ECS Architecture in Rust

[video] Build with Naz : Spinner animation, lock contention, Ctrl+C handling for TUI and CLI

Miscellaneous

April 2025 Rust Jobs Report

Crate of the Week

This week’s crate is brush, a bash compatible shell implemented completely in Rust.

Thanks to Josh Triplett for the suggestion!

Please submit your suggestions and votes for next week!

Calls for Testing

An important step for RFC implementation is for people to experiment with the implementation and give feedback, especially before stabilization.

No calls for testing were issued this week by Rust, Rust language RFCs or Rustup.

Let us know if you would like your feature to be tracked as a part of this list.

RFCs

Rust

Rustup

If you are a feature implementer and would like your RFC to appear on the above list, add the new call-for-testing label to your RFC along with a comment providing testing instructions and/or guidance on which aspect(s) of the feature need testing.

Call for Participation; projects and speakers

CFP - Projects

Always wanted to contribute to open-source projects but did not know where to start? Every week we highlight some tasks from the Rust community for you to pick and get started!

Some of these tasks may also have mentors available, visit the task page for more information.

rama - add ffi/rama-rhai: support ability to use services and layers written in rhai

rama - support akamai h2 passive fingerprint and expose in echo + fp services

If you are a Rust project owner and are looking for contributors, please submit tasks here or through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

CFP - Events

Are you a new or experienced speaker looking for a place to share something cool? This section highlights events that are being planned and are accepting submissions to join their event as a speaker.

No Calls for papers or presentations were submitted this week.

If you are an event organizer hoping to expand the reach of your event, please submit a link to the website through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

Updates from the Rust Project

397 pull requests were merged in the last week

Compiler

async drop fix for async_drop_in_place<T> layout for unspecified T

better error message for late/early lifetime param mismatch

perf: make the assertion in Ident::new debug-only

perf: merge typeck loop with static/const item eval loop

Library

implement (part of) ACP 429: add DerefMut to Lazy[Cell/Lock]

implement VecDeque::truncate_front()

Cargo

network: use Retry-After header for HTTP 429 responses

rustc: Don’t panic on unknown bins

add glob pattern support for known_hosts

add support for -Zembed-metadata

fix tracking issue template link

make cargo script ignore workspaces

Rustdoc

rustdoc-json: remove newlines from attributes

ensure that temporary doctest folder is correctly removed even if doctests failed

Clippy

clippy: item_name_repetitions: exclude enum variants with identical path components

clippy: return_and_then: only lint returning expressions

clippy: unwrap_used, expect_used: accept macro result as receiver

clippy: add allow_unused config to missing_docs_in_private_items

clippy: add new confusing_method_to_numeric_cast lint

clippy: add new lint: cloned_ref_to_slice_refs

clippy: fix ICE in missing_const_for_fn

clippy: fix integer_division false negative for NonZero denominators

clippy: fix manual_let_else false negative when diverges on simple enum variant

clippy: fix unnecessary_unwrap emitted twice in closure

clippy: fix diagnostic paths printed by dogfood test

clippy: fix false negative for unnecessary_unwrap

clippy: make let_with_type_underscore help message into a suggestion

clippy: resolve through local re-exports in lookup_path

Rust-Analyzer

fix postfix snippets duplicating derefs

resolve doc path from parent module if outer comments exist on module

still complete parentheses & method call arguments if there are existing parentheses, but they are after a newline

Rust Compiler Performance Triage

Lot of changes this week. Overall result is positive, with one large win in type check.

Triage done by @panstromek. Revision range: 62c5f58f..718ddf66

Summary:

(instructions:u) mean range count Regressions ❌ (primary) 0.5% [0.2%, 1.4%] 113 Regressions ❌ (secondary) 0.5% [0.1%, 1.5%] 54 Improvements ✅ (primary) -2.5% [-22.5%, -0.3%] 45 Improvements ✅ (secondary) -0.9% [-2.3%, -0.2%] 10 All ❌✅ (primary) -0.3% [-22.5%, 1.4%] 158

Full report here

Approved RFCs

Changes to Rust follow the Rust RFC (request for comments) process. These are the RFCs that were approved for implementation this week:

No RFCs were approved this week.

Final Comment Period

Every week, the team announces the ‘final comment period’ for RFCs and key PRs which are reaching a decision. Express your opinions now.

Tracking Issues & PRs

Rust

Tracking Issue for non_null_from_ref

Add std::io::Seek instance for std::io::Take

aarch64-softfloat: forbid enabling the neon target feature

Stabilize the avx512 target features

make std::intrinsics functions actually be intrinsics

Error on recursive opaque ty in HIR typeck

Remove i128 and u128 from improper_ctypes_definitions

Guarantee behavior of transmuting Option::<T>::None subject to NPO

Temporary lifetime extension through tuple struct and tuple variant constructors

Stabilize tcp_quickack

Change the desugaring of assert! for better error output

Make well-formedness predicates no longer coinductive

No Items entered Final Comment Period this week for Cargo, Rust RFCs, Language Reference, Language Team or Unsafe Code Guidelines.

Let us know if you would like your PRs, Tracking Issues or RFCs to be tracked as a part of this list.

New and Updated RFCs

RFC: Extended Standard Library (ESL)

Upcoming Events

Rusty Events between 2025-05-14 - 2025-06-11 🦀

Virtual

2025-05-15 | Hybrid (Redmond, WA, US) | Seattle Rust User Group

May, 2025 SRUG (Seattle Rust User Group) Meetup

2025-05-15 | Virtual (Girona, ES) | Rust Girona

Sessió setmanal de codificació / Weekly coding session

2025-05-15 | Virtual (Joint Meetup, Europe + Israel) | Rust Berlin + Rust Paris + London Rust Project Group + Rust Zürisee + Rust TLV + Rust Nürnberg + Rust Munich + Rust Aarhus + lunch.rs

🦀 Celebrating 10 years of Rust 1.0 🦀

2025-05-15 | Virtual (Zürich, CH) | Rust Zürisee

🦀 Celebrating 10 years of Rust 1.0 (co-event with berline.rs) 🦀

2025-05-18 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-05-19 | Virtual (Tel Aviv-yafo, IL) | Rust 🦀 TLV

Tauri: Cross-Platform desktop applications with Rust and web technologies

2025-05-20 | Hybrid (EU/UK) | Rust and C++ Dragons (former Cardiff)

Talk and Connect - Fullstack - with Goetz Markgraf and Ben Wishovich

2025-05-20 | Virtual (London, UK) | Women in Rust

Threading through lifetimes of borrowing - the Rust way

2025-05-20 | Virtual (Tel Aviv, IL) | Code Mavens 🦀 - 🐍 - 🐪

Rust at Work a conversation with Ran Reichman Co-Founder & CEO of Flarion

2025-05-20 | Virtual (Washington, DC, US) | Rust DC

Mid-month Rustful

2025-05-21 | Hybrid (Vancouver, BC, CA) | Vancouver Rust

Linking

2025-05-22 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-05-22 | Virtual (Girona, ES) | Rust Girona

Sessió setmanal de codificació / Weekly coding session

2025-05-25 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-05-27 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Fourth Tuesday

2025-05-27 | Virtual (Tel Aviv, IL) | Code Mavens 🦀 - 🐍 - 🐪

Rust at Work - conversation with Eli Shalom & Igal Tabachnik of Eureka Labs

2025-05-29 | Virtual (Nürnberg, DE) | Rust Nuremberg

Rust Nürnberg online

2025-05-29 | Virtual (Tel Aviv-yafo, IL) | Rust 🦀 TLV

שיחה חופשית ווירטואלית על ראסט

2025-06-01 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-06-03 | Virtual (Tel Aviv-yafo, IL) | Rust 🦀 TLV

Why Rust? למה ראסט? -

2025-06-04 | Virtual (Indianapolis, IN, US) | Indy Rust

Indy.rs - with Social Distancing

2025-06-05 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-06-07 | Virtual (Kampala, UG) | Rust Circle Meetup

Rust Circle Meetup

2025-06-08 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-06-10 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Second Tuesday

2025-06-10 | Virtual (London, UK) | Women in Rust

👋 Community Catch Up

Asia

2025-05-17 | Delhi, IN | Rust Delhi

Rust Delhi Meetup #10

2025-05-24 | Bangalore/Bengaluru, IN | Rust Bangalore

May 2025 Rustacean meetup

2025-06-08 | Tel Aviv-yafo, IL | Rust 🦀 TLV

In person Rust June 2025 at AWS in Tel Aviv

Europe

2025-05-13 - 2025-05-17 | Utrecht, NL | Rust NL

RustWeek 2025

2025-05-14 | Reading, UK | Reading Rust Workshop

Reading Rust Meetup

2025-05-15 | Berlin, DE | Rust Berlin

10 years anniversary of Rust 1.0

2025-05-15 | Oslo, NO | Rust Oslo

Rust 10-year anniversary @ Appear

2025-05-16 | Amsterdam, NL | RustNL

Rust Week Hackathon

2025-05-16 | Utrecht, NL | Rust NL Meetup Group

RustWeek Hackathon

2025-05-17 | Amsterdam, NL | RustNL

Walking Tour around Utrecht - Saturday

2025-05-20 | Dortmund, DE | Rust Dortmund

Talk and Connect - Fullstack - with Goetz Markgraf and Ben Wishovich

2025-05-20 | Aarhus, DK | Rust Aarhus

Hack Night - Robot Edition

2025-05-20 | Leipzig, SN, DE | Rust - Modern Systems Programming in Leipzig

Topic TBD

2025-05-22 | Augsburg, DE | Rust Augsburg

Rust meetup #13:A Practical Guide to Telemetry in Rust

2025-05-22 | Bern, CH | Rust Bern

2025 Rust Talks Bern #3 @zentroom

2025-05-22 | Paris, FR | Rust Paris

Rust meetup #77

2025-05-22 | Stockholm, SE | Stockholm Rust

Rust Meetup @UXStream

2025-05-27 | Basel, CH | Rust Basel

Rust Meetup #11 @ Letsboot Basel

2025-05-27 | Vienna, AT | Rust Vienna

Rust Vienna - May at Bitcredit 🦀

2025-05-29 | Oslo, NO | Rust Oslo

Rust Hack'n'Learn at Kampen Bistro

2025-05-31 | Stockholm, SE | Stockholm Rust

Ferris’ Fika Forum #12

2025-06-04 | Ghent, BE | Systems Programming Ghent

Grow smarter with embedded Rust

2025-06-04 | München, DE | Rust Munich

Rust Munich 2025 / 2 - Hacking Evening

2025-06-04 | Oxford, UK | Oxford Rust Meetup Group

Oxford Rust and C++ social

2025-06-05 | München, DE | Rust Munich

Rust Munich 2025 / 2 - Hacking Evening

2025-06-11 | Reading, UK | Reading Rust Workshop

Reading Rust Meetup

North America

2025-05-15 | Hybrid (Redmond, WA, US) | Seattle Rust User Group

May, 2025 SRUG (Seattle Rust User Group) Meetup

2025-05-15 | Mountain View, CA, US | Hacker Dojo

RUST MEETUP at HACKER DOJO

2025-05-15 | Nashville, TN, US | Music City Rust Developers

Using Rust For Web Series 2 : Why you, Yes You. Should use Hyperscript!

2025-05-15 | Hybrid (Redmond, WA, US) | Seattle Rust User Group

May, 2025 SRUG (Seattle Rust User Group) Meetup

2025-05-18 | Albuquerque, NM, US | Ideas and Coffee

Intro Level Rust Get-together

2025-05-20 | San Francisco, CA, US | San Francisco Rust Study Group

Rust Hacking in Person

2025-05-21 | Hybrid (Vancouver, BC, CA) | Vancouver Rust

Linking

2025-05-28 | Austin, TX, US | Rust ATX

Rust Lunch - Fareground

2025-05-29 | Atlanta, GA, US | Rust Atlanta

Rust-Atl

2025-06-05 | Saint Louis, MO, US | STL Rust

Leptos web framework

South America

2025-05-28 | Montevideo, DE, UY | Rust Meetup Uruguay

Primera meetup de Rust de 2025!

2025-05-31 | São Paulo, BR | Rust São Paulo Meetup

Encontro do Rust-SP na WillBank

If you are running a Rust event please add it to the calendar to get it mentioned here. Please remember to add a link to the event too. Email the Rust Community Team for access.

Jobs

Please see the latest Who’s Hiring thread on r/rust

Quote of the Week

If a Pin drops in a room, and nobody around understands it, does it make an unsound? #rustlang

– Josh Triplett on fedi

Thanks to Josh Triplett for the self-suggestion!

Please submit quotes and vote for next week!

This Week in Rust is edited by: nellshamrell, llogiq, cdmistman, ericseppanen, extrawurst, U007D, joelmarcey, mariannegoldin, bennyvasquez, bdillo

Email list hosting is sponsored by The Rust Foundation

Discuss on r/rust

#rust-lang #rust #rustlang #twir #long post

2 notes · View notes

this-week-in-rust · 1 month ago

Text

This Week in Rust 599

This Week in Rust is openly developed on GitHub and archives can be viewed at this-week-in-rust.org. If you find any errors in this week’s issue, please submit a PR.

Want TWIR in your inbox? Subscribe here.

Updates from Rust Community

Official

Announcing Google Summer of Code 2025 selected projects

Foundation

10 Years of Stable Rust: An Infrastructure Story

Newsletters

This Month in Rust OSDev: April 2025 | Rust OSDev

The Embedded Rustacean Issue #45

Project/Tooling Updates

Avian Physics 0.3

Two months in Servo: CSS nesting, Shadow DOM, Clipboard API, and more

Cot v0.3: Even Lazier

Streaming data analytics, Fluvio 0.17.3 release

CGP v0.4 is Here: Unlocking Easier Debugging, Extensible Presets, and More

Rama v0.2

Observations/Thoughts

Bad Type Patterns - The Duplicate duck

Rust nightly features you should watch out for

Lock-Free Rust: How to Build a Rollercoaster While It’s on Fire

Simple & type-safe localization in Rust

From Rust to AVR assembly: Dissecting a minimal blinky program

Tarpaulins Week Of Speed

Rustls Server-Side Performance

Is Rust the Future of Programming?

Rust Walkthroughs

Functional asynchronous Rust

The Power of Compile-Time ECS Architecture in Rust

[video] Build with Naz : Spinner animation, lock contention, Ctrl+C handling for TUI and CLI

Miscellaneous

April 2025 Rust Jobs Report

Crate of the Week

This week’s crate is brush, a bash compatible shell implemented completely in Rust.

Thanks to Josh Triplett for the suggestion!

Please submit your suggestions and votes for next week!

Calls for Testing

An important step for RFC implementation is for people to experiment with the implementation and give feedback, especially before stabilization.

No calls for testing were issued this week by Rust, Rust language RFCs or Rustup.

Let us know if you would like your feature to be tracked as a part of this list.

RFCs

Rust

Rustup

Call for Participation; projects and speakers

CFP - Projects

Always wanted to contribute to open-source projects but did not know where to start? Every week we highlight some tasks from the Rust community for you to pick and get started!

Some of these tasks may also have mentors available, visit the task page for more information.

rama - add ffi/rama-rhai: support ability to use services and layers written in rhai

rama - support akamai h2 passive fingerprint and expose in echo + fp services

If you are a Rust project owner and are looking for contributors, please submit tasks here or through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

CFP - Events

Are you a new or experienced speaker looking for a place to share something cool? This section highlights events that are being planned and are accepting submissions to join their event as a speaker.

No Calls for papers or presentations were submitted this week.

If you are an event organizer hoping to expand the reach of your event, please submit a link to the website through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

Updates from the Rust Project

397 pull requests were merged in the last week

Compiler

async drop fix for async_drop_in_place<T> layout for unspecified T

better error message for late/early lifetime param mismatch

perf: make the assertion in Ident::new debug-only

perf: merge typeck loop with static/const item eval loop

Library

implement (part of) ACP 429: add DerefMut to Lazy[Cell/Lock]

implement VecDeque::truncate_front()

Cargo

network: use Retry-After header for HTTP 429 responses

rustc: Don’t panic on unknown bins

add glob pattern support for known_hosts

add support for -Zembed-metadata

fix tracking issue template link

make cargo script ignore workspaces

Rustdoc

rustdoc-json: remove newlines from attributes

ensure that temporary doctest folder is correctly removed even if doctests failed

Clippy

clippy: item_name_repetitions: exclude enum variants with identical path components

clippy: return_and_then: only lint returning expressions

clippy: unwrap_used, expect_used: accept macro result as receiver

clippy: add allow_unused config to missing_docs_in_private_items

clippy: add new confusing_method_to_numeric_cast lint

clippy: add new lint: cloned_ref_to_slice_refs

clippy: fix ICE in missing_const_for_fn

clippy: fix integer_division false negative for NonZero denominators

clippy: fix manual_let_else false negative when diverges on simple enum variant

clippy: fix unnecessary_unwrap emitted twice in closure

clippy: fix diagnostic paths printed by dogfood test

clippy: fix false negative for unnecessary_unwrap

clippy: make let_with_type_underscore help message into a suggestion

clippy: resolve through local re-exports in lookup_path

Rust-Analyzer

fix postfix snippets duplicating derefs

resolve doc path from parent module if outer comments exist on module

still complete parentheses & method call arguments if there are existing parentheses, but they are after a newline

Rust Compiler Performance Triage

Lot of changes this week. Overall result is positive, with one large win in type check.

Triage done by @panstromek. Revision range: 62c5f58f..718ddf66

Summary:

Full report here

Approved RFCs

Changes to Rust follow the Rust RFC (request for comments) process. These are the RFCs that were approved for implementation this week:

No RFCs were approved this week.

Final Comment Period

Every week, the team announces the ‘final comment period’ for RFCs and key PRs which are reaching a decision. Express your opinions now.

Tracking Issues & PRs

Rust

Tracking Issue for non_null_from_ref

Add std::io::Seek instance for std::io::Take

aarch64-softfloat: forbid enabling the neon target feature

Stabilize the avx512 target features

make std::intrinsics functions actually be intrinsics

Error on recursive opaque ty in HIR typeck

Remove i128 and u128 from improper_ctypes_definitions

Guarantee behavior of transmuting Option::<T>::None subject to NPO

Temporary lifetime extension through tuple struct and tuple variant constructors

Stabilize tcp_quickack

Change the desugaring of assert! for better error output

Make well-formedness predicates no longer coinductive

No Items entered Final Comment Period this week for Cargo, Rust RFCs, Language Reference, Language Team or Unsafe Code Guidelines.

Let us know if you would like your PRs, Tracking Issues or RFCs to be tracked as a part of this list.

New and Updated RFCs

RFC: Extended Standard Library (ESL)

Upcoming Events

Rusty Events between 2025-05-14 - 2025-06-11 🦀

Virtual

2025-05-15 | Hybrid (Redmond, WA, US) | Seattle Rust User Group

May, 2025 SRUG (Seattle Rust User Group) Meetup

2025-05-15 | Virtual (Girona, ES) | Rust Girona

Sessió setmanal de codificació / Weekly coding session

2025-05-15 | Virtual (Joint Meetup, Europe + Israel) | Rust Berlin + Rust Paris + London Rust Project Group + Rust Zürisee + Rust TLV + Rust Nürnberg + Rust Munich + Rust Aarhus + lunch.rs

🦀 Celebrating 10 years of Rust 1.0 🦀

2025-05-15 | Virtual (Zürich, CH) | Rust Zürisee

🦀 Celebrating 10 years of Rust 1.0 (co-event with berline.rs) 🦀

2025-05-18 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-05-19 | Virtual (Tel Aviv-yafo, IL) | Rust 🦀 TLV

Tauri: Cross-Platform desktop applications with Rust and web technologies

2025-05-20 | Hybrid (EU/UK) | Rust and C++ Dragons (former Cardiff)

Talk and Connect - Fullstack - with Goetz Markgraf and Ben Wishovich

2025-05-20 | Virtual (London, UK) | Women in Rust

Threading through lifetimes of borrowing - the Rust way

2025-05-20 | Virtual (Tel Aviv, IL) | Code Mavens 🦀 - 🐍 - 🐪

Rust at Work a conversation with Ran Reichman Co-Founder & CEO of Flarion

2025-05-20 | Virtual (Washington, DC, US) | Rust DC

Mid-month Rustful

2025-05-21 | Hybrid (Vancouver, BC, CA) | Vancouver Rust

Linking

2025-05-22 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-05-22 | Virtual (Girona, ES) | Rust Girona

Sessió setmanal de codificació / Weekly coding session

2025-05-25 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-05-27 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Fourth Tuesday

2025-05-27 | Virtual (Tel Aviv, IL) | Code Mavens 🦀 - 🐍 - 🐪

Rust at Work - conversation with Eli Shalom & Igal Tabachnik of Eureka Labs

2025-05-29 | Virtual (Nürnberg, DE) | Rust Nuremberg

Rust Nürnberg online

2025-05-29 | Virtual (Tel Aviv-yafo, IL) | Rust 🦀 TLV

שיחה חופשית ווירטואלית על ראסט

2025-06-01 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-06-03 | Virtual (Tel Aviv-yafo, IL) | Rust 🦀 TLV

Why Rust? למה ראסט? -

2025-06-04 | Virtual (Indianapolis, IN, US) | Indy Rust

Indy.rs - with Social Distancing

2025-06-05 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-06-07 | Virtual (Kampala, UG) | Rust Circle Meetup

Rust Circle Meetup

2025-06-08 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-06-10 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Second Tuesday

2025-06-10 | Virtual (London, UK) | Women in Rust

👋 Community Catch Up

Asia

2025-05-17 | Delhi, IN | Rust Delhi

Rust Delhi Meetup #10

2025-05-24 | Bangalore/Bengaluru, IN | Rust Bangalore

May 2025 Rustacean meetup

2025-06-08 | Tel Aviv-yafo, IL | Rust 🦀 TLV

In person Rust June 2025 at AWS in Tel Aviv

Europe

2025-05-13 - 2025-05-17 | Utrecht, NL | Rust NL

RustWeek 2025

2025-05-14 | Reading, UK | Reading Rust Workshop

Reading Rust Meetup

2025-05-15 | Berlin, DE | Rust Berlin

10 years anniversary of Rust 1.0

2025-05-15 | Oslo, NO | Rust Oslo

Rust 10-year anniversary @ Appear

2025-05-16 | Amsterdam, NL | RustNL

Rust Week Hackathon

2025-05-16 | Utrecht, NL | Rust NL Meetup Group

RustWeek Hackathon

2025-05-17 | Amsterdam, NL | RustNL

Walking Tour around Utrecht - Saturday

2025-05-20 | Dortmund, DE | Rust Dortmund

Talk and Connect - Fullstack - with Goetz Markgraf and Ben Wishovich

2025-05-20 | Aarhus, DK | Rust Aarhus

Hack Night - Robot Edition

2025-05-20 | Leipzig, SN, DE | Rust - Modern Systems Programming in Leipzig

Topic TBD

2025-05-22 | Augsburg, DE | Rust Augsburg

Rust meetup #13:A Practical Guide to Telemetry in Rust

2025-05-22 | Bern, CH | Rust Bern

2025 Rust Talks Bern #3 @zentroom

2025-05-22 | Paris, FR | Rust Paris

Rust meetup #77

2025-05-22 | Stockholm, SE | Stockholm Rust

Rust Meetup @UXStream

2025-05-27 | Basel, CH | Rust Basel

Rust Meetup #11 @ Letsboot Basel

2025-05-27 | Vienna, AT | Rust Vienna

Rust Vienna - May at Bitcredit 🦀

2025-05-29 | Oslo, NO | Rust Oslo

Rust Hack'n'Learn at Kampen Bistro

2025-05-31 | Stockholm, SE | Stockholm Rust

Ferris’ Fika Forum #12

2025-06-04 | Ghent, BE | Systems Programming Ghent

Grow smarter with embedded Rust

2025-06-04 | München, DE | Rust Munich

Rust Munich 2025 / 2 - Hacking Evening

2025-06-04 | Oxford, UK | Oxford Rust Meetup Group

Oxford Rust and C++ social

2025-06-05 | München, DE | Rust Munich

Rust Munich 2025 / 2 - Hacking Evening

2025-06-11 | Reading, UK | Reading Rust Workshop

Reading Rust Meetup

North America

2025-05-15 | Hybrid (Redmond, WA, US) | Seattle Rust User Group

May, 2025 SRUG (Seattle Rust User Group) Meetup

2025-05-15 | Mountain View, CA, US | Hacker Dojo

RUST MEETUP at HACKER DOJO

2025-05-15 | Nashville, TN, US | Music City Rust Developers

Using Rust For Web Series 2 : Why you, Yes You. Should use Hyperscript!

2025-05-15 | Hybrid (Redmond, WA, US) | Seattle Rust User Group

May, 2025 SRUG (Seattle Rust User Group) Meetup

2025-05-18 | Albuquerque, NM, US | Ideas and Coffee

Intro Level Rust Get-together

2025-05-20 | San Francisco, CA, US | San Francisco Rust Study Group

Rust Hacking in Person

2025-05-21 | Hybrid (Vancouver, BC, CA) | Vancouver Rust

Linking

2025-05-28 | Austin, TX, US | Rust ATX

Rust Lunch - Fareground

2025-05-29 | Atlanta, GA, US | Rust Atlanta

Rust-Atl

2025-06-05 | Saint Louis, MO, US | STL Rust

Leptos web framework

South America

2025-05-28 | Montevideo, DE, UY | Rust Meetup Uruguay

Primera meetup de Rust de 2025!

2025-05-31 | São Paulo, BR | Rust São Paulo Meetup

Encontro do Rust-SP na WillBank

If you are running a Rust event please add it to the calendar to get it mentioned here. Please remember to add a link to the event too. Email the Rust Community Team for access.

Jobs

Please see the latest Who’s Hiring thread on r/rust

Quote of the Week

If a Pin drops in a room, and nobody around understands it, does it make an unsound? #rustlang

– Josh Triplett on fedi

Thanks to Josh Triplett for the self-suggestion!

Please submit quotes and vote for next week!

This Week in Rust is edited by: nellshamrell, llogiq, cdmistman, ericseppanen, extrawurst, U007D, joelmarcey, mariannegoldin, bennyvasquez, bdillo

Email list hosting is sponsored by The Rust Foundation

Discuss on r/rust

#rust-lang #rust #rustlang #twir #long post

1 note · View note

this-week-in-rust · 1 month ago

Text

This Week in Rust 599

This Week in Rust is openly developed on GitHub and archives can be viewed at this-week-in-rust.org. If you find any errors in this week's issue, please submit a PR.

Want TWIR in your inbox? Subscribe here.

Updates from Rust Community

Official

Announcing Google Summer of Code 2025 selected projects

Foundation

10 Years of Stable Rust: An Infrastructure Story

Newsletters

This Month in Rust OSDev: April 2025 | Rust OSDev

The Embedded Rustacean Issue #45

Project/Tooling Updates

Avian Physics 0.3

Two months in Servo: CSS nesting, Shadow DOM, Clipboard API, and more

Cot v0.3: Even Lazier

Streaming data analytics, Fluvio 0.17.3 release

CGP v0.4 is Here: Unlocking Easier Debugging, Extensible Presets, and More

Rama v0.2

Observations/Thoughts

Bad Type Patterns - The Duplicate duck

Rust nightly features you should watch out for

Lock-Free Rust: How to Build a Rollercoaster While It’s on Fire

Simple & type-safe localization in Rust

From Rust to AVR assembly: Dissecting a minimal blinky program

Tarpaulins Week Of Speed

Rustls Server-Side Performance

Is Rust the Future of Programming?

Rust Walkthroughs

Functional asynchronous Rust

The Power of Compile-Time ECS Architecture in Rust

[video] Build with Naz : Spinner animation, lock contention, Ctrl+C handling for TUI and CLI

Miscellaneous

April 2025 Rust Jobs Report

Crate of the Week

This week's crate is brush, a bash compatible shell implemented completely in Rust.

Thanks to Josh Triplett for the suggestion!

Please submit your suggestions and votes for next week!

Calls for Testing

An important step for RFC implementation is for people to experiment with the implementation and give feedback, especially before stabilization.

No calls for testing were issued this week by Rust, Rust language RFCs or Rustup.

Let us know if you would like your feature to be tracked as a part of this list.

RFCs

Rust

Rustup

Call for Participation; projects and speakers

CFP - Projects

Always wanted to contribute to open-source projects but did not know where to start? Every week we highlight some tasks from the Rust community for you to pick and get started!

Some of these tasks may also have mentors available, visit the task page for more information.

rama - add ffi/rama-rhai: support ability to use services and layers written in rhai

rama - support akamai h2 passive fingerprint and expose in echo + fp services

If you are a Rust project owner and are looking for contributors, please submit tasks here or through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

CFP - Events

Are you a new or experienced speaker looking for a place to share something cool? This section highlights events that are being planned and are accepting submissions to join their event as a speaker.

No Calls for papers or presentations were submitted this week.

If you are an event organizer hoping to expand the reach of your event, please submit a link to the website through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

Updates from the Rust Project

397 pull requests were merged in the last week

Compiler

async drop fix for async_drop_in_place<T> layout for unspecified T

better error message for late/early lifetime param mismatch

perf: make the assertion in Ident::new debug-only

perf: merge typeck loop with static/const item eval loop

Library

implement (part of) ACP 429: add DerefMut to Lazy[Cell/Lock]

implement VecDeque::truncate_front()

Cargo

network: use Retry-After header for HTTP 429 responses

rustc: Don't panic on unknown bins

add glob pattern support for known_hosts

add support for -Zembed-metadata

fix tracking issue template link

make cargo script ignore workspaces

Rustdoc

rustdoc-json: remove newlines from attributes

ensure that temporary doctest folder is correctly removed even if doctests failed

Clippy

clippy: item_name_repetitions: exclude enum variants with identical path components

clippy: return_and_then: only lint returning expressions

clippy: unwrap_used, expect_used: accept macro result as receiver

clippy: add allow_unused config to missing_docs_in_private_items

clippy: add new confusing_method_to_numeric_cast lint

clippy: add new lint: cloned_ref_to_slice_refs

clippy: fix ICE in missing_const_for_fn

clippy: fix integer_division false negative for NonZero denominators

clippy: fix manual_let_else false negative when diverges on simple enum variant

clippy: fix unnecessary_unwrap emitted twice in closure

clippy: fix diagnostic paths printed by dogfood test

clippy: fix false negative for unnecessary_unwrap

clippy: make let_with_type_underscore help message into a suggestion

clippy: resolve through local re-exports in lookup_path

Rust-Analyzer

fix postfix snippets duplicating derefs

resolve doc path from parent module if outer comments exist on module

still complete parentheses & method call arguments if there are existing parentheses, but they are after a newline

Rust Compiler Performance Triage

Lot of changes this week. Overall result is positive, with one large win in type check.

Triage done by @panstromek. Revision range: 62c5f58f..718ddf66

Summary:

Full report here

Approved RFCs

Changes to Rust follow the Rust RFC (request for comments) process. These are the RFCs that were approved for implementation this week:

No RFCs were approved this week.

Final Comment Period

Every week, the team announces the 'final comment period' for RFCs and key PRs which are reaching a decision. Express your opinions now.

Tracking Issues & PRs

Rust

Tracking Issue for non_null_from_ref

Add std::io::Seek instance for std::io::Take

aarch64-softfloat: forbid enabling the neon target feature

Stabilize the avx512 target features

make std::intrinsics functions actually be intrinsics

Error on recursive opaque ty in HIR typeck

Remove i128 and u128 from improper_ctypes_definitions

Guarantee behavior of transmuting Option::<T>::None subject to NPO

Temporary lifetime extension through tuple struct and tuple variant constructors

Stabilize tcp_quickack

Change the desugaring of assert! for better error output

Make well-formedness predicates no longer coinductive

No Items entered Final Comment Period this week for Cargo, Rust RFCs, Language Reference, Language Team or Unsafe Code Guidelines.

Let us know if you would like your PRs, Tracking Issues or RFCs to be tracked as a part of this list.

New and Updated RFCs

RFC: Extended Standard Library (ESL)

Upcoming Events

Rusty Events between 2025-05-14 - 2025-06-11 🦀

Virtual

2025-05-15 | Hybrid (Redmond, WA, US) | Seattle Rust User Group

May, 2025 SRUG (Seattle Rust User Group) Meetup

2025-05-15 | Virtual (Girona, ES) | Rust Girona

Sessió setmanal de codificació / Weekly coding session

2025-05-15 | Virtual (Joint Meetup, Europe + Israel) | Rust Berlin + Rust Paris + London Rust Project Group + Rust Zürisee + Rust TLV + Rust Nürnberg + Rust Munich + Rust Aarhus + lunch.rs

🦀 Celebrating 10 years of Rust 1.0 🦀

2025-05-15 | Virtual (Zürich, CH) | Rust Zürisee

🦀 Celebrating 10 years of Rust 1.0 (co-event with berline.rs) 🦀

2025-05-18 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-05-19 | Virtual (Tel Aviv-yafo, IL) | Rust 🦀 TLV

Tauri: Cross-Platform desktop applications with Rust and web technologies

2025-05-20 | Hybrid (EU/UK) | Rust and C++ Dragons (former Cardiff)

Talk and Connect - Fullstack - with Goetz Markgraf and Ben Wishovich

2025-05-20 | Virtual (London, UK) | Women in Rust

Threading through lifetimes of borrowing - the Rust way

2025-05-20 | Virtual (Tel Aviv, IL) | Code Mavens 🦀 - 🐍 - 🐪

Rust at Work a conversation with Ran Reichman Co-Founder & CEO of Flarion

2025-05-20 | Virtual (Washington, DC, US) | Rust DC

Mid-month Rustful

2025-05-21 | Hybrid (Vancouver, BC, CA) | Vancouver Rust

Linking

2025-05-22 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-05-22 | Virtual (Girona, ES) | Rust Girona

Sessió setmanal de codificació / Weekly coding session

2025-05-25 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-05-27 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Fourth Tuesday

2025-05-27 | Virtual (Tel Aviv, IL) | Code Mavens 🦀 - 🐍 - 🐪

Rust at Work - conversation with Eli Shalom & Igal Tabachnik of Eureka Labs

2025-05-29 | Virtual (Nürnberg, DE) | Rust Nuremberg

Rust Nürnberg online

2025-05-29 | Virtual (Tel Aviv-yafo, IL) | Rust 🦀 TLV

שיחה חופשית ווירטואלית על ראסט

2025-06-01 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-06-03 | Virtual (Tel Aviv-yafo, IL) | Rust 🦀 TLV

Why Rust? למה ראסט? -

2025-06-04 | Virtual (Indianapolis, IN, US) | Indy Rust

Indy.rs - with Social Distancing

2025-06-05 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-06-07 | Virtual (Kampala, UG) | Rust Circle Meetup

Rust Circle Meetup

2025-06-08 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-06-10 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Second Tuesday

2025-06-10 | Virtual (London, UK) | Women in Rust

👋 Community Catch Up

Asia

2025-05-17 | Delhi, IN | Rust Delhi

Rust Delhi Meetup #10

2025-05-24 | Bangalore/Bengaluru, IN | Rust Bangalore

May 2025 Rustacean meetup

2025-06-08 | Tel Aviv-yafo, IL | Rust 🦀 TLV

In person Rust June 2025 at AWS in Tel Aviv

Europe

2025-05-13 - 2025-05-17 | Utrecht, NL | Rust NL

RustWeek 2025

2025-05-14 | Reading, UK | Reading Rust Workshop

Reading Rust Meetup

2025-05-15 | Berlin, DE | Rust Berlin

10 years anniversary of Rust 1.0

2025-05-15 | Oslo, NO | Rust Oslo

Rust 10-year anniversary @ Appear

2025-05-16 | Amsterdam, NL | RustNL

Rust Week Hackathon

2025-05-16 | Utrecht, NL | Rust NL Meetup Group

RustWeek Hackathon

2025-05-17 | Amsterdam, NL | RustNL

Walking Tour around Utrecht - Saturday

2025-05-20 | Dortmund, DE | Rust Dortmund

Talk and Connect - Fullstack - with Goetz Markgraf and Ben Wishovich

2025-05-20 | Aarhus, DK | Rust Aarhus

Hack Night - Robot Edition

2025-05-20 | Leipzig, SN, DE | Rust - Modern Systems Programming in Leipzig

Topic TBD

2025-05-22 | Augsburg, DE | Rust Augsburg

Rust meetup #13:A Practical Guide to Telemetry in Rust

2025-05-22 | Bern, CH | Rust Bern

2025 Rust Talks Bern #3 @zentroom

2025-05-22 | Paris, FR | Rust Paris

Rust meetup #77

2025-05-22 | Stockholm, SE | Stockholm Rust

Rust Meetup @UXStream

2025-05-27 | Basel, CH | Rust Basel

Rust Meetup #11 @ Letsboot Basel

2025-05-27 | Vienna, AT | Rust Vienna

Rust Vienna - May at Bitcredit 🦀

2025-05-29 | Oslo, NO | Rust Oslo

Rust Hack'n'Learn at Kampen Bistro

2025-05-31 | Stockholm, SE | Stockholm Rust

Ferris' Fika Forum #12

2025-06-04 | Ghent, BE | Systems Programming Ghent

Grow smarter with embedded Rust

2025-06-04 | München, DE | Rust Munich

Rust Munich 2025 / 2 - Hacking Evening

2025-06-04 | Oxford, UK | Oxford Rust Meetup Group

Oxford Rust and C++ social

2025-06-05 | München, DE | Rust Munich

Rust Munich 2025 / 2 - Hacking Evening

2025-06-11 | Reading, UK | Reading Rust Workshop

Reading Rust Meetup

North America

2025-05-15 | Hybrid (Redmond, WA, US) | Seattle Rust User Group

May, 2025 SRUG (Seattle Rust User Group) Meetup

2025-05-15 | Mountain View, CA, US | Hacker Dojo

RUST MEETUP at HACKER DOJO

2025-05-15 | Nashville, TN, US | Music City Rust Developers

Using Rust For Web Series 2 : Why you, Yes You. Should use Hyperscript!

2025-05-15 | Hybrid (Redmond, WA, US) | Seattle Rust User Group

May, 2025 SRUG (Seattle Rust User Group) Meetup

2025-05-18 | Albuquerque, NM, US | Ideas and Coffee

Intro Level Rust Get-together

2025-05-20 | San Francisco, CA, US | San Francisco Rust Study Group

Rust Hacking in Person

2025-05-21 | Hybrid (Vancouver, BC, CA) | Vancouver Rust

Linking

2025-05-28 | Austin, TX, US | Rust ATX

Rust Lunch - Fareground

2025-05-29 | Atlanta, GA, US | Rust Atlanta

Rust-Atl

2025-06-05 | Saint Louis, MO, US | STL Rust

Leptos web framework

South America

2025-05-28 | Montevideo, DE, UY | Rust Meetup Uruguay

Primera meetup de Rust de 2025!

2025-05-31 | São Paulo, BR | Rust São Paulo Meetup

Encontro do Rust-SP na WillBank

If you are running a Rust event please add it to the calendar to get it mentioned here. Please remember to add a link to the event too. Email the Rust Community Team for access.

Jobs

Please see the latest Who's Hiring thread on r/rust

Quote of the Week

If a Pin drops in a room, and nobody around understands it, does it make an unsound? #rustlang

– Josh Triplett on fedi

Thanks to Josh Triplett for the self-suggestion!

Please submit quotes and vote for next week!

This Week in Rust is edited by: nellshamrell, llogiq, cdmistman, ericseppanen, extrawurst, U007D, joelmarcey, mariannegoldin, bennyvasquez, bdillo

Email list hosting is sponsored by The Rust Foundation

Discuss on r/rust

#rust-lang #rust #rustlang #twir #long post

2 notes · View notes

this-week-in-rust · 1 month ago

Text

This Week in Rust 599

This Week in Rust is openly developed on GitHub and archives can be viewed at this-week-in-rust.org. If you find any errors in this week's issue, please submit a PR.

Want TWIR in your inbox? Subscribe here.

Updates from Rust Community

Official

Announcing Google Summer of Code 2025 selected projects

Foundation

10 Years of Stable Rust: An Infrastructure Story

Newsletters

This Month in Rust OSDev: April 2025 | Rust OSDev

The Embedded Rustacean Issue #45

Project/Tooling Updates

Avian Physics 0.3

Two months in Servo: CSS nesting, Shadow DOM, Clipboard API, and more

Cot v0.3: Even Lazier

Streaming data analytics, Fluvio 0.17.3 release

CGP v0.4 is Here: Unlocking Easier Debugging, Extensible Presets, and More

Rama v0.2

Observations/Thoughts

Bad Type Patterns - The Duplicate duck

Rust nightly features you should watch out for

Lock-Free Rust: How to Build a Rollercoaster While It’s on Fire

Simple & type-safe localization in Rust

From Rust to AVR assembly: Dissecting a minimal blinky program

Tarpaulins Week Of Speed

Rustls Server-Side Performance

Is Rust the Future of Programming?

Rust Walkthroughs

Functional asynchronous Rust

The Power of Compile-Time ECS Architecture in Rust

[video] Build with Naz : Spinner animation, lock contention, Ctrl+C handling for TUI and CLI

Miscellaneous

April 2025 Rust Jobs Report

Crate of the Week

This week's crate is brush, a bash compatible shell implemented completely in Rust.

Thanks to Josh Triplett for the suggestion!

Please submit your suggestions and votes for next week!

Calls for Testing

An important step for RFC implementation is for people to experiment with the implementation and give feedback, especially before stabilization.

No calls for testing were issued this week by Rust, Rust language RFCs or Rustup.

Let us know if you would like your feature to be tracked as a part of this list.

RFCs

Rust

Rustup

Call for Participation; projects and speakers

CFP - Projects

Always wanted to contribute to open-source projects but did not know where to start? Every week we highlight some tasks from the Rust community for you to pick and get started!

Some of these tasks may also have mentors available, visit the task page for more information.

rama - add ffi/rama-rhai: support ability to use services and layers written in rhai

rama - support akamai h2 passive fingerprint and expose in echo + fp services

If you are a Rust project owner and are looking for contributors, please submit tasks here or through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

CFP - Events

Are you a new or experienced speaker looking for a place to share something cool? This section highlights events that are being planned and are accepting submissions to join their event as a speaker.

No Calls for papers or presentations were submitted this week.

If you are an event organizer hoping to expand the reach of your event, please submit a link to the website through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

Updates from the Rust Project

397 pull requests were merged in the last week

Compiler

async drop fix for async_drop_in_place<T> layout for unspecified T

better error message for late/early lifetime param mismatch

perf: make the assertion in Ident::new debug-only

perf: merge typeck loop with static/const item eval loop

Library

implement (part of) ACP 429: add DerefMut to Lazy[Cell/Lock]

implement VecDeque::truncate_front()

Cargo

network: use Retry-After header for HTTP 429 responses

rustc: Don't panic on unknown bins

add glob pattern support for known_hosts

add support for -Zembed-metadata

fix tracking issue template link

make cargo script ignore workspaces

Rustdoc

rustdoc-json: remove newlines from attributes

ensure that temporary doctest folder is correctly removed even if doctests failed

Clippy

clippy: item_name_repetitions: exclude enum variants with identical path components

clippy: return_and_then: only lint returning expressions

clippy: unwrap_used, expect_used: accept macro result as receiver

clippy: add allow_unused config to missing_docs_in_private_items

clippy: add new confusing_method_to_numeric_cast lint

clippy: add new lint: cloned_ref_to_slice_refs

clippy: fix ICE in missing_const_for_fn

clippy: fix integer_division false negative for NonZero denominators

clippy: fix manual_let_else false negative when diverges on simple enum variant

clippy: fix unnecessary_unwrap emitted twice in closure

clippy: fix diagnostic paths printed by dogfood test

clippy: fix false negative for unnecessary_unwrap

clippy: make let_with_type_underscore help message into a suggestion

clippy: resolve through local re-exports in lookup_path

Rust-Analyzer

fix postfix snippets duplicating derefs

resolve doc path from parent module if outer comments exist on module

still complete parentheses & method call arguments if there are existing parentheses, but they are after a newline

Rust Compiler Performance Triage

Lot of changes this week. Overall result is positive, with one large win in type check.

Triage done by @panstromek. Revision range: 62c5f58f..718ddf66

Summary:

Full report here

Approved RFCs

Changes to Rust follow the Rust RFC (request for comments) process. These are the RFCs that were approved for implementation this week:

No RFCs were approved this week.

Final Comment Period

Every week, the team announces the 'final comment period' for RFCs and key PRs which are reaching a decision. Express your opinions now.

Tracking Issues & PRs

Rust

Tracking Issue for non_null_from_ref

Add std::io::Seek instance for std::io::Take

aarch64-softfloat: forbid enabling the neon target feature

Stabilize the avx512 target features

make std::intrinsics functions actually be intrinsics

Error on recursive opaque ty in HIR typeck

Remove i128 and u128 from improper_ctypes_definitions

Guarantee behavior of transmuting Option::<T>::None subject to NPO

Temporary lifetime extension through tuple struct and tuple variant constructors

Stabilize tcp_quickack

Change the desugaring of assert! for better error output

Make well-formedness predicates no longer coinductive

No Items entered Final Comment Period this week for Cargo, Rust RFCs, Language Reference, Language Team or Unsafe Code Guidelines.

Let us know if you would like your PRs, Tracking Issues or RFCs to be tracked as a part of this list.

New and Updated RFCs

RFC: Extended Standard Library (ESL)

Upcoming Events

Rusty Events between 2025-05-14 - 2025-06-11 🦀

Virtual

2025-05-15 | Hybrid (Redmond, WA, US) | Seattle Rust User Group

May, 2025 SRUG (Seattle Rust User Group) Meetup

2025-05-15 | Virtual (Girona, ES) | Rust Girona

Sessió setmanal de codificació / Weekly coding session

2025-05-15 | Virtual (Joint Meetup, Europe + Israel) | Rust Berlin + Rust Paris + London Rust Project Group + Rust Zürisee + Rust TLV + Rust Nürnberg + Rust Munich + Rust Aarhus + lunch.rs

🦀 Celebrating 10 years of Rust 1.0 🦀

2025-05-15 | Virtual (Zürich, CH) | Rust Zürisee

🦀 Celebrating 10 years of Rust 1.0 (co-event with berline.rs) 🦀

2025-05-18 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-05-19 | Virtual (Tel Aviv-yafo, IL) | Rust 🦀 TLV

Tauri: Cross-Platform desktop applications with Rust and web technologies

2025-05-20 | Hybrid (EU/UK) | Rust and C++ Dragons (former Cardiff)

Talk and Connect - Fullstack - with Goetz Markgraf and Ben Wishovich

2025-05-20 | Virtual (London, UK) | Women in Rust

Threading through lifetimes of borrowing - the Rust way

2025-05-20 | Virtual (Tel Aviv, IL) | Code Mavens 🦀 - 🐍 - 🐪

Rust at Work a conversation with Ran Reichman Co-Founder & CEO of Flarion

2025-05-20 | Virtual (Washington, DC, US) | Rust DC

Mid-month Rustful

2025-05-21 | Hybrid (Vancouver, BC, CA) | Vancouver Rust

Linking

2025-05-22 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-05-22 | Virtual (Girona, ES) | Rust Girona

Sessió setmanal de codificació / Weekly coding session

2025-05-25 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-05-27 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Fourth Tuesday

2025-05-27 | Virtual (Tel Aviv, IL) | Code Mavens 🦀 - 🐍 - 🐪

Rust at Work - conversation with Eli Shalom & Igal Tabachnik of Eureka Labs

2025-05-29 | Virtual (Nürnberg, DE) | Rust Nuremberg

Rust Nürnberg online

2025-05-29 | Virtual (Tel Aviv-yafo, IL) | Rust 🦀 TLV

שיחה חופשית ווירטואלית על ראסט

2025-06-01 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-06-03 | Virtual (Tel Aviv-yafo, IL) | Rust 🦀 TLV

Why Rust? למה ראסט? -

2025-06-04 | Virtual (Indianapolis, IN, US) | Indy Rust

Indy.rs - with Social Distancing

2025-06-05 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-06-07 | Virtual (Kampala, UG) | Rust Circle Meetup

Rust Circle Meetup

2025-06-08 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-06-10 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Second Tuesday

2025-06-10 | Virtual (London, UK) | Women in Rust

👋 Community Catch Up

Asia

2025-05-17 | Delhi, IN | Rust Delhi

Rust Delhi Meetup #10

2025-05-24 | Bangalore/Bengaluru, IN | Rust Bangalore

May 2025 Rustacean meetup

2025-06-08 | Tel Aviv-yafo, IL | Rust 🦀 TLV

In person Rust June 2025 at AWS in Tel Aviv

Europe

2025-05-13 - 2025-05-17 | Utrecht, NL | Rust NL

RustWeek 2025

2025-05-14 | Reading, UK | Reading Rust Workshop

Reading Rust Meetup

2025-05-15 | Berlin, DE | Rust Berlin

10 years anniversary of Rust 1.0

2025-05-15 | Oslo, NO | Rust Oslo

Rust 10-year anniversary @ Appear

2025-05-16 | Amsterdam, NL | RustNL

Rust Week Hackathon

2025-05-16 | Utrecht, NL | Rust NL Meetup Group

RustWeek Hackathon

2025-05-17 | Amsterdam, NL | RustNL

Walking Tour around Utrecht - Saturday

2025-05-20 | Dortmund, DE | Rust Dortmund

Talk and Connect - Fullstack - with Goetz Markgraf and Ben Wishovich

2025-05-20 | Aarhus, DK | Rust Aarhus

Hack Night - Robot Edition

2025-05-20 | Leipzig, SN, DE | Rust - Modern Systems Programming in Leipzig

Topic TBD

2025-05-22 | Augsburg, DE | Rust Augsburg

Rust meetup #13:A Practical Guide to Telemetry in Rust

2025-05-22 | Bern, CH | Rust Bern

2025 Rust Talks Bern #3 @zentroom

2025-05-22 | Paris, FR | Rust Paris

Rust meetup #77

2025-05-22 | Stockholm, SE | Stockholm Rust

Rust Meetup @UXStream

2025-05-27 | Basel, CH | Rust Basel

Rust Meetup #11 @ Letsboot Basel

2025-05-27 | Vienna, AT | Rust Vienna

Rust Vienna - May at Bitcredit 🦀

2025-05-29 | Oslo, NO | Rust Oslo

Rust Hack'n'Learn at Kampen Bistro

2025-05-31 | Stockholm, SE | Stockholm Rust

Ferris' Fika Forum #12

2025-06-04 | Ghent, BE | Systems Programming Ghent

Grow smarter with embedded Rust

2025-06-04 | München, DE | Rust Munich

Rust Munich 2025 / 2 - Hacking Evening

2025-06-04 | Oxford, UK | Oxford Rust Meetup Group

Oxford Rust and C++ social

2025-06-05 | München, DE | Rust Munich

Rust Munich 2025 / 2 - Hacking Evening

2025-06-11 | Reading, UK | Reading Rust Workshop

Reading Rust Meetup

North America

2025-05-15 | Hybrid (Redmond, WA, US) | Seattle Rust User Group

May, 2025 SRUG (Seattle Rust User Group) Meetup

2025-05-15 | Mountain View, CA, US | Hacker Dojo

RUST MEETUP at HACKER DOJO

2025-05-15 | Nashville, TN, US | Music City Rust Developers

Using Rust For Web Series 2 : Why you, Yes You. Should use Hyperscript!

2025-05-15 | Hybrid (Redmond, WA, US) | Seattle Rust User Group

May, 2025 SRUG (Seattle Rust User Group) Meetup

2025-05-18 | Albuquerque, NM, US | Ideas and Coffee

Intro Level Rust Get-together

2025-05-20 | San Francisco, CA, US | San Francisco Rust Study Group

Rust Hacking in Person

2025-05-21 | Hybrid (Vancouver, BC, CA) | Vancouver Rust

Linking

2025-05-28 | Austin, TX, US | Rust ATX

Rust Lunch - Fareground

2025-05-29 | Atlanta, GA, US | Rust Atlanta

Rust-Atl

2025-06-05 | Saint Louis, MO, US | STL Rust

Leptos web framework

South America

2025-05-28 | Montevideo, DE, UY | Rust Meetup Uruguay

Primera meetup de Rust de 2025!

2025-05-31 | São Paulo, BR | Rust São Paulo Meetup

Encontro do Rust-SP na WillBank

If you are running a Rust event please add it to the calendar to get it mentioned here. Please remember to add a link to the event too. Email the Rust Community Team for access.

Jobs

Please see the latest Who's Hiring thread on r/rust

Quote of the Week

If a Pin drops in a room, and nobody around understands it, does it make an unsound? #rustlang

– Josh Triplett on fedi

Thanks to Josh Triplett for the self-suggestion!

Please submit quotes and vote for next week!

This Week in Rust is edited by: nellshamrell, llogiq, cdmistman, ericseppanen, extrawurst, U007D, joelmarcey, mariannegoldin, bennyvasquez, bdillo

Email list hosting is sponsored by The Rust Foundation

Discuss on r/rust

#rust-lang #rust #rustlang #twir #long post

1 note · View note

this-week-in-rust · 1 month ago

Text

This Week in Rust 598

This Week in Rust is openly developed on GitHub and archives can be viewed at this-week-in-rust.org. If you find any errors in this week’s issue, please submit a PR.

Want TWIR in your inbox? Subscribe here.

Updates from Rust Community

Official

Announcing rustup 1.28.2

Project/Tooling Updates

Announcing Malai - Share your dev server (and more) over P2P

Streaming data analytics, Fluvio 0.17.2 release

Leptos v0.8.0

This Month in Redox - April 2025

Observations/Thoughts

Automatic interleaving of high-level concurrent operations

Flattening Rust’s Learning Curve

The Evolution of Rust

std::mem is… interesting

[audio] Svix with Tom Hacohen

Rust Walkthroughs

Authentication with Axum

Newtyped Indices are Proofs

What is my fuzzer doing?

A Rust API Inspired by Python, Powered by Serde

How to create small and secure Docker images for Rust (FROM scratch)

[video] Rust + SQLite: Complete Tutorial (Schema, CRUD, JSON & Async)

Research

An Interactive Debugger for Rust Trait Errors

RustAssistant: Using LLMs to Fix Compilation Errors in Rust Code

Miscellaneous

Memory-safe sudo to become the default in Ubuntu

How To Get A Rust Job Part I: Companies Already Using Rust

GOSIM Spotlight Finalists at RustWeek

Crate of the Week

This week’s crate is structstruck, a proc-macro crate for enabling nested struct/enum definitions.

Thanks to Julius Michaelis for the self-suggestion!

Please submit your suggestions and votes for next week!

Calls for Testing

An important step for RFC implementation is for people to experiment with the implementation and give feedback, especially before stabilization.

No calls for testing were issued this week by Rust, Rust language RFCs or Rustup.

Let us know if you would like your feature to be tracked as a part of this list.

RFCs

Rust

Rustup

Call for Participation; projects and speakers

CFP - Projects

Always wanted to contribute to open-source projects but did not know where to start? Every week we highlight some tasks from the Rust community for you to pick and get started!

Some of these tasks may also have mentors available, visit the task page for more information.

* Hyperswitch - Move connector-specific utility functions to respective connector modules * Hyperswitch - Refactor ACI connector to reuse utilities from utils.rs * Hyperswitch - Analyze and remove unused functions in connector/utils.rs * rama - add ffi/rama-rhai: support ability to use services and layers written in rhai * rama - support (TLS) peetprint in rama-net fingerprinting * rama - support akamai h2 passive fingerprint and expose in echo + fp services * rama - add into_stream to BodyExtractExt trait

If you are a Rust project owner and are looking for contributors, please submit tasks here or through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

CFP - Events

Are you a new or experienced speaker looking for a place to share something cool? This section highlights events that are being planned and are accepting submissions to join their event as a speaker.

No Calls for papers or presentations were submitted this week.

If you are an event organizer hoping to expand the reach of your event, please submit a link to the website through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

Updates from the Rust Project

447 pull requests were merged in the last week

Compiler

handle paren in macro expand for let-init-else expr

implement or-patterns for pattern types

initial support for dynamically linked crates

mir-opt: execute MatchBranchSimplification after GVN

refactor rustc_on_unimplemented's filter parser

perf: optimize the codegen for Span::from_expansion

perf: delay checking of #[rustc_no_implicit_autorefs] in autoref lint

perf: simplify LazyAttrTokenStream

perf: use a closure instead of three chained iterators

transmutability: merge contiguous runs with a common destination

transmutability: uninit transition matches unit byte only

Library

avoid redundant WTF-8 checks in PathBuf

delegate to inner vec::IntoIter from env::ArgsOs

implement Iterator::last for vec::IntoIter

stabilize ptr::swap_nonoverlapping in const

stabilize select_unpredictable

streamline the format macro

Cargo

cargo add: suggest similarly named features

in package-workspace, keep dev-dependencies if they have a version

Rustdoc

fix doctest heuristic for main fn wrapping

Rustfmt

also allow bool literals as first item of let chain

Clippy

don’t warn about unloaded crates

fix collapsible_if false positive on block stmt before expr

fix manual_unwrap_or_default false positive on ref binding

fix: manual_slice_fill false positive on IndexMut overload

fix: unused_async false positive on default impl

gate collapsible_if let_chains lints on edition 2024 and MSRV

Rust-Analyzer

add PGO support to install

better handle parallelism in cache priming

disable fixpoint for variance computation temporarily

add an assist to unwrap a type with a generic arg

correct assoc ty bound var starting index

correct span info for mir::Operand

don’t panic on some weird code

fix move_bounds assists not working for lifetimes

fix incorrect handling of unresolved non-module imports in name resolution

fix proc-macro API creating malformed negative literals

implement mut to const ptr cast for method resolution

improve parser recovery a bit

negative nums in concat! expansion

remove unnecessary token length check for macros in renaming

improve the let code snippet

render more lifetimes

support environment variable CARGO_MANIFEST_PATH

Rust Compiler Performance Triage

A relatively noisy week due to addition of new benchmarks as part of our 2025 benchmark update, and a number of large regressions in a rollup landing late in the week (and so not yet investigated).

Triage done by @simulacrum. Revision range: 25cdf1f6..62c5f58f

2 Regressions, 2 Improvements, 6 Mixed; 3 of them in rollups 31 artifact comparisons made in total

Full report here.

Approved RFCs

Changes to Rust follow the Rust RFC (request for comments) process. These are the RFCs that were approved for implementation this week:

No RFCs were approved this week.

Final Comment Period

Every week, the team announces the ‘final comment period’ for RFCs and key PRs which are reaching a decision. Express your opinions now.

Tracking Issues & PRs

Rust

Temporary lifetime extension through tuple struct and tuple variant constructors

Stabilize the avx512 target features

Make missing_fragment_specifier an unconditional error

Error on recursive opaque ty in HIR typeck

Add std::io::Seek instance for std::io::Take

remove intrinsics::drop_in_place

Stabilize tcp_quickack

Change the desugaring of assert! for better error output

[Tracking Issue for non_null_from_ref](https://github.com/rust-lang/rust/issues/130823)

Make well-formedness predicates no longer coinductive

Fix parameter order for _by() variants of min / max/ minmax in std::cmp

Finalize repeat expr inference behaviour with inferred repeat counts

Implement (part of) ACP 429: add DerefMut to Lazy[Cell/Lock]

Other Areas

Cargo

Stabilize doctest-xcompile

Rust RFCs

RFC: map_or_default in Option and Result

No Items entered Final Comment Period this week for Language Reference, Language Team or Unsafe Code Guidelines.

Let us know if you would like your PRs, Tracking Issues or RFCs to be tracked as a part of this list.

New and Updated RFCs

RFC: enable derive(From) for single-field structs

#![register_{attribute,lint}_tool]

RFC: Add an attribute for raising the alignment of various items

Upcoming Events

Rusty Events between 2025-05-07 - 2025-06-04 🦀

Virtual

2025-05-07 | Virtual (Indianapolis, IN, US) | Indy Rust

Indy.rs - with Social Distancing

2025-05-07 | Virtual (Rotterdam, NL) | Bevy Game Development

Bevy Meetup #10

2025-05-08 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-05-08 | Virtual (Girona, ES) | Rust Girona

Sessió setmanal de codificació / Weekly coding session

2025-05-08 | Virtual (Tel Aviv-Yafo, IL) | Rust 🦀 TLV

שיחה חופשית ווירטואלית על ראסט

2025-05-08 | Virtual (Zürich, CH) | Rust Zürisee

🦀 Celebrating 10 years of Rust 1.0 (co-event with berline.rs) 🦀

2025-05-10 | Virtual | Leptos Community

Leptos Meetup: 0.8 Release and Server Fn Websockets Demo

2025-05-11 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-05-11 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-05-13 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Second Tuesday

2025-05-15 | Hybrid (Redmond, WA, US) | Seattle Rust User Group

May, 2025 SRUG (Seattle Rust User Group) Meetup

2025-05-15 | Virtual (Joint Meetup, Europe + Israel) | Rust Berlin, Rust Paris, London Rust Project Group, Rust Zürisee, Rust TLV, Rust Nürnberg, Rust Munich, Rust Aarhus, lunch.rs

🦀 Celebrating 10 years of Rust 1.0 🦀

2025-05-15 | Virtual (Girona, ES) | Rust Girona

Sessió setmanal de codificació / Weekly coding session

2025-05-18 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-05-19 | Virtual (Tel Aviv-Yafo, IL) | Rust 🦀 TLV

Tauri: Cross-Platform desktop applications with Rust and web technologies

2025-05-20 | Virtual (London, UK) | Women in Rust

Threading through lifetimes of borrowing - the Rust way

2025-05-20 | Virtual (Tel Aviv, IL) | Code Mavens 🦀 - 🐍 - 🐪

Rust at Work a conversation with Ran Reichman Co-Founder & CEO of Flarion

2025-05-20 | Virtual (Washington, DC, US) | Rust DC

Mid-month Rustful

2025-05-21 | Hybrid (Vancouver, BC, CA) | Vancouver Rust

Rust Study/Hack/Hang-out

2025-05-22 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-05-22 | Virtual (Girona, ES) | Rust Girona

Sessió setmanal de codificació / Weekly coding session

2025-05-25 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-05-25 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-05-27 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Fourth Tuesday

2025-05-27 | Virtual (Tel Aviv, IL) | Code Mavens 🦀 - 🐍 - 🐪

Rust at Work - conversation with Eli Shalom & Igal Tabachnik of Eureka Labs

2025-05-29 | Virtual (Nürnberg, DE) | Rust Nuremberg

Rust Nürnberg online

2025-06-01 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-06-04 | Virtual (Indianapolis, IN, US) | Indy Rust

Indy.rs - with Social Distancing

Asia

2025-05-17 | Delhi, IN | Rust Delhi

Rust Delhi Meetup #10

2025-05-24 | Bangalore/Bengaluru, IN | Rust Bangalore

May 2025 Rustacean meetup

Europe

2025-05-07 | Girona, ES | Rust Girona

Rust Girona Hack & Learn 05 2025

2025-05-07 | Köln, DE | Rust Cologne

Rust in May: FFI

2025-05-07 | Madrid, ES | MadRust

VII Lenguajes, VII Perspectivas, I Problema

2025-05-07 | Oxford, UK | Oxford Rust Meetup Group

Oxford Rust and C++ social

2025-05-08 | Gdansk, PL | Rust Gdansk

Rust Gdansk Meetup #8

2025-05-08 | London, UK | London Rust Project Group

Adopting Rust (Hosted by Lloyds bank)

2025-05-12 | Amsterdam, NL | RustNL

Bowling at Rust Week

2025-05-12 | Amsterdam, NL | RustNL

Create your rusty steel Rust logo!

2025-05-12 | Amsterdam, NL | RustNL

Walking Tour around Utrecht - Monday (afternoon)

2025-05-12 | Amsterdam, NL | RustNL

Walking Tour around Utrecht - Monday

2025-05-13 | Amsterdam, NL | RustNL

RustWeek 2025 announcement

2025-05-13 - 2025-05-17 | Utrecht, NL | Rust NL

RustWeek 2025

2025-05-14 | Reading, UK | Reading Rust Workshop

Reading Rust Meetup

2025-05-15 | Oslo, NO | Rust Oslo

Rust 10-year anniversary @ Appear

2025-05-16 | Amsterdam, NL | RustNL

Rust Week Hackathon

2025-05-16 | Utrecht, NL | Rust NL Meetup Group

RustWeek Hackathon

2025-05-17 | Amsterdam, NL | RustNL

Walking Tour around Utrecht - Saturday

2025-05-20 | Aarhus, DK | Rust Aarhus

Hack Night - Robot Edition

2025-05-20 | Leipzig, SN, DE | Rust - Modern Systems Programming in Leipzig

Topic TBD

2025-05-22 | Augsburg, DE | Rust Augsburg

Rust meetup #13

2025-05-22 | Bern, CH | Rust Bern

2025 Rust Talks Bern #3 @zentroom

2025-05-22 | Paris, FR | Rust Paris

Rust meetup #77

2025-05-22 | Stockholm, SE | Stockholm Rust

Rust Meetup @UXStream

2025-05-27 | Basel, CH | Rust Basel

Rust Meetup #11 @ Letsboot Basel

2025-05-29 | Oslo, NO | Rust Oslo

Rust Hack'n'Learn at Kampen Bistro

2025-06-04 | München, DE | Rust Munich

Rust Munich 2025 / 2 - Hacking Evening

2025-06-04 | Oxford, UK | Oxford Rust Meetup Group

Oxford Rust and C++ social

North America

2025-05-07 | Chicago, IL, US | Chicago Rust Meetup

Rust Happy Hour

2025-05-08 | México City, MX | Rust MX

Calculando con el compilador: Compiler time vs Run time. Introducción a uv

2025-05-08 | Portland, OR, US | PDXRust

Apache DataFusion: A Fast, Extensible, Modular Analytic Query Engine in Rust

2025-05-11 | Boston, MA, US | Boston Rust Meetup

Porter Square Rust Lunch, May 11

2025-05-13 | New York, NY, US | Rust NYC

Multi-Platform App in Rust @ Warp.dev && Verifying Rust’s Stdlib @ CMU

2025-05-15 | Mountain View, CA, US | Hacker Dojo

RUST MEETUP at HACKER DOJO

2025-05-15 | Nashville, TN, US | Music City Rust Developers

Using Rust For Web Series 2 : Why you, Yes You. Should use Hyperscript!

2025-05-15 | Hybrid (Redmond, WA, US) | Seattle Rust User Group

May, 2025 SRUG (Seattle Rust User Group) Meetup

2025-05-20 | San Francisco, CA, US | San Francisco Rust Study Group

Rust Hacking in Person

2025-05-21 | Hybrid (Vancouver, BC, CA) | Vancouver Rust

Rust Study/Hack/Hang-out

2025-05-28 | Austin, TX, US | Rust ATX

Rust Lunch - Fareground

2025-05-29 | Atlanta, GA, US | Rust Atlanta

Rust-Atl

South America

2025-05-28 | Montevideo, DE, UY | Rust Meetup Uruguay

Primera meetup de Rust de 2025!

2025-05-31 | São Paulo, BR | Rust São Paulo Meetup

Encontro do Rust-SP na WillBank

If you are running a Rust event please add it to the calendar to get it mentioned here. Please remember to add a link to the event too. Email the Rust Community Team for access.

Jobs

Please see the latest Who’s Hiring thread on r/rust

Quote of the Week

Well, the answer is basically yes. Our firmware is all Rust. Every component of our autonomy stack is Rust. Our app is 50% in Rust. And, our visualization tools are in Rust. Our production tools are in rust. The production QC software, which we ship to China, is in rust. Our internal websites are in rust. It’s rust all over. We’ve drank the Rust Kool-Aid. In fact, there is no Python installed on the robots. This is not to dis Python at all, but it’s just simply not there.

We use Python for neural network training. But Python is boxed to that. Everything else is Rust. And, the advantage of using Rust exponentially builds up.

– Vivek Bagaria on filtra.io

Thanks to Brian Kung for the suggestion!

Please submit quotes and vote for next week!

This Week in Rust is edited by: nellshamrell, llogiq, cdmistman, ericseppanen, extrawurst, U007D, joelmarcey, mariannegoldin, bennyvasquez, bdillo

Email list hosting is sponsored by The Rust Foundation

Discuss on r/rust

#rust-lang #rust #rustlang #twir #long post

1 note · View note

this-week-in-rust · 1 month ago

Text

This Week in Rust 598

This Week in Rust is openly developed on GitHub and archives can be viewed at this-week-in-rust.org. If you find any errors in this week's issue, please submit a PR.

Want TWIR in your inbox? Subscribe here.

Updates from Rust Community

Official

Announcing rustup 1.28.2

Project/Tooling Updates

Announcing Malai - Share your dev server (and more) over P2P

Streaming data analytics, Fluvio 0.17.2 release

Leptos v0.8.0

This Month in Redox - April 2025

Observations/Thoughts

Automatic interleaving of high-level concurrent operations

Flattening Rust's Learning Curve

The Evolution of Rust

std::mem is... interesting

[audio] Svix with Tom Hacohen

Rust Walkthroughs

Authentication with Axum

Newtyped Indices are Proofs

What is my fuzzer doing?

A Rust API Inspired by Python, Powered by Serde

How to create small and secure Docker images for Rust (FROM scratch)

[video] Rust + SQLite: Complete Tutorial (Schema, CRUD, JSON & Async)

Research

An Interactive Debugger for Rust Trait Errors

RustAssistant: Using LLMs to Fix Compilation Errors in Rust Code

Miscellaneous

Memory-safe sudo to become the default in Ubuntu

How To Get A Rust Job Part I: Companies Already Using Rust

GOSIM Spotlight Finalists at RustWeek

Crate of the Week

This week's crate is structstruck, a proc-macro crate for enabling nested struct/enum definitions.

Thanks to Julius Michaelis for the self-suggestion!

Please submit your suggestions and votes for next week!

Calls for Testing

An important step for RFC implementation is for people to experiment with the implementation and give feedback, especially before stabilization.

No calls for testing were issued this week by Rust, Rust language RFCs or Rustup.

Let us know if you would like your feature to be tracked as a part of this list.

RFCs

Rust

Rustup

Call for Participation; projects and speakers

CFP - Projects

Always wanted to contribute to open-source projects but did not know where to start? Every week we highlight some tasks from the Rust community for you to pick and get started!

Some of these tasks may also have mentors available, visit the task page for more information.

If you are a Rust project owner and are looking for contributors, please submit tasks here or through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

CFP - Events

Are you a new or experienced speaker looking for a place to share something cool? This section highlights events that are being planned and are accepting submissions to join their event as a speaker.

No Calls for papers or presentations were submitted this week.

If you are an event organizer hoping to expand the reach of your event, please submit a link to the website through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

Updates from the Rust Project

447 pull requests were merged in the last week

Compiler

handle paren in macro expand for let-init-else expr

implement or-patterns for pattern types

initial support for dynamically linked crates

mir-opt: execute MatchBranchSimplification after GVN

refactor rustc_on_unimplemented's filter parser

perf: optimize the codegen for Span::from_expansion

perf: delay checking of #[rustc_no_implicit_autorefs] in autoref lint

perf: simplify LazyAttrTokenStream

perf: use a closure instead of three chained iterators

transmutability: merge contiguous runs with a common destination

transmutability: uninit transition matches unit byte only

Library

avoid redundant WTF-8 checks in PathBuf

delegate to inner vec::IntoIter from env::ArgsOs

implement Iterator::last for vec::IntoIter

stabilize ptr::swap_nonoverlapping in const

stabilize select_unpredictable

streamline the format macro

Cargo

cargo add: suggest similarly named features

in package-workspace, keep dev-dependencies if they have a version

Rustdoc

fix doctest heuristic for main fn wrapping

Rustfmt

also allow bool literals as first item of let chain

Clippy

don't warn about unloaded crates

fix collapsible_if false positive on block stmt before expr

fix manual_unwrap_or_default false positive on ref binding

fix: manual_slice_fill false positive on IndexMut overload

fix: unused_async false positive on default impl

gate collapsible_if let_chains lints on edition 2024 and MSRV

Rust-Analyzer

add PGO support to install

better handle parallelism in cache priming

disable fixpoint for variance computation temporarily

add an assist to unwrap a type with a generic arg

correct assoc ty bound var starting index

correct span info for mir::Operand

don't panic on some weird code

fix move_bounds assists not working for lifetimes

fix incorrect handling of unresolved non-module imports in name resolution

fix proc-macro API creating malformed negative literals

implement mut to const ptr cast for method resolution

improve parser recovery a bit

negative nums in concat! expansion

remove unnecessary token length check for macros in renaming

improve the let code snippet

render more lifetimes

support environment variable CARGO_MANIFEST_PATH

Rust Compiler Performance Triage

A relatively noisy week due to addition of new benchmarks as part of our 2025 benchmark update, and a number of large regressions in a rollup landing late in the week (and so not yet investigated).

Triage done by @simulacrum. Revision range: 25cdf1f6..62c5f58f

2 Regressions, 2 Improvements, 6 Mixed; 3 of them in rollups 31 artifact comparisons made in total

Full report here.

Approved RFCs

Changes to Rust follow the Rust RFC (request for comments) process. These are the RFCs that were approved for implementation this week:

No RFCs were approved this week.

Final Comment Period

Every week, the team announces the 'final comment period' for RFCs and key PRs which are reaching a decision. Express your opinions now.

Tracking Issues & PRs

Rust

Temporary lifetime extension through tuple struct and tuple variant constructors

Stabilize the avx512 target features

Make missing_fragment_specifier an unconditional error

Error on recursive opaque ty in HIR typeck

Add std::io::Seek instance for std::io::Take

remove intrinsics::drop_in_place

Stabilize tcp_quickack

Change the desugaring of assert! for better error output

[Tracking Issue for non_null_from_ref](https://github.com/rust-lang/rust/issues/130823)

Make well-formedness predicates no longer coinductive

Fix parameter order for _by() variants of min / max/ minmax in std::cmp

Finalize repeat expr inference behaviour with inferred repeat counts

Implement (part of) ACP 429: add DerefMut to Lazy[Cell/Lock]

Other Areas

Cargo

Stabilize doctest-xcompile

Rust RFCs

RFC: map_or_default in Option and Result

No Items entered Final Comment Period this week for Language Reference, Language Team or Unsafe Code Guidelines.

Let us know if you would like your PRs, Tracking Issues or RFCs to be tracked as a part of this list.

New and Updated RFCs

RFC: enable derive(From) for single-field structs

#![register_{attribute,lint}_tool]

RFC: Add an attribute for raising the alignment of various items

Upcoming Events

Rusty Events between 2025-05-07 - 2025-06-04 🦀

Virtual

2025-05-07 | Virtual (Indianapolis, IN, US) | Indy Rust

Indy.rs - with Social Distancing

2025-05-07 | Virtual (Rotterdam, NL) | Bevy Game Development

Bevy Meetup #10

2025-05-08 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-05-08 | Virtual (Girona, ES) | Rust Girona

Sessió setmanal de codificació / Weekly coding session

2025-05-08 | Virtual (Tel Aviv-Yafo, IL) | Rust 🦀 TLV

שיחה חופשית ווירטואלית על ראסט

2025-05-08 | Virtual (Zürich, CH) | Rust Zürisee

🦀 Celebrating 10 years of Rust 1.0 (co-event with berline.rs) 🦀

2025-05-10 | Virtual | Leptos Community

Leptos Meetup: 0.8 Release and Server Fn Websockets Demo

2025-05-11 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-05-11 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-05-13 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Second Tuesday

2025-05-15 | Hybrid (Redmond, WA, US) | Seattle Rust User Group

May, 2025 SRUG (Seattle Rust User Group) Meetup

2025-05-15 | Virtual (Joint Meetup, Europe + Israel) | Rust Berlin, Rust Paris, London Rust Project Group, Rust Zürisee, Rust TLV, Rust Nürnberg, Rust Munich, Rust Aarhus, lunch.rs

🦀 Celebrating 10 years of Rust 1.0 🦀

2025-05-15 | Virtual (Girona, ES) | Rust Girona

Sessió setmanal de codificació / Weekly coding session

2025-05-18 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-05-19 | Virtual (Tel Aviv-Yafo, IL) | Rust 🦀 TLV

Tauri: Cross-Platform desktop applications with Rust and web technologies

2025-05-20 | Virtual (London, UK) | Women in Rust

Threading through lifetimes of borrowing - the Rust way

2025-05-20 | Virtual (Tel Aviv, IL) | Code Mavens 🦀 - 🐍 - 🐪

Rust at Work a conversation with Ran Reichman Co-Founder & CEO of Flarion

2025-05-20 | Virtual (Washington, DC, US) | Rust DC

Mid-month Rustful

2025-05-21 | Hybrid (Vancouver, BC, CA) | Vancouver Rust

Rust Study/Hack/Hang-out

2025-05-22 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-05-22 | Virtual (Girona, ES) | Rust Girona

Sessió setmanal de codificació / Weekly coding session

2025-05-25 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-05-25 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-05-27 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Fourth Tuesday

2025-05-27 | Virtual (Tel Aviv, IL) | Code Mavens 🦀 - 🐍 - 🐪

Rust at Work - conversation with Eli Shalom & Igal Tabachnik of Eureka Labs

2025-05-29 | Virtual (Nürnberg, DE) | Rust Nuremberg

Rust Nürnberg online

2025-06-01 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-06-04 | Virtual (Indianapolis, IN, US) | Indy Rust

Indy.rs - with Social Distancing

Asia

2025-05-17 | Delhi, IN | Rust Delhi

Rust Delhi Meetup #10

2025-05-24 | Bangalore/Bengaluru, IN | Rust Bangalore

May 2025 Rustacean meetup

Europe

2025-05-07 | Girona, ES | Rust Girona

Rust Girona Hack & Learn 05 2025

2025-05-07 | Köln, DE | Rust Cologne

Rust in May: FFI

2025-05-07 | Madrid, ES | MadRust

VII Lenguajes, VII Perspectivas, I Problema

2025-05-07 | Oxford, UK | Oxford Rust Meetup Group

Oxford Rust and C++ social

2025-05-08 | Gdansk, PL | Rust Gdansk

Rust Gdansk Meetup #8

2025-05-08 | London, UK | London Rust Project Group

Adopting Rust (Hosted by Lloyds bank)

2025-05-12 | Amsterdam, NL | RustNL

Bowling at Rust Week

2025-05-12 | Amsterdam, NL | RustNL

Create your rusty steel Rust logo!

2025-05-12 | Amsterdam, NL | RustNL

Walking Tour around Utrecht - Monday (afternoon)

2025-05-12 | Amsterdam, NL | RustNL

Walking Tour around Utrecht - Monday

2025-05-13 | Amsterdam, NL | RustNL

RustWeek 2025 announcement

2025-05-13 - 2025-05-17 | Utrecht, NL | Rust NL

RustWeek 2025

2025-05-14 | Reading, UK | Reading Rust Workshop

Reading Rust Meetup

2025-05-15 | Oslo, NO | Rust Oslo

Rust 10-year anniversary @ Appear

2025-05-16 | Amsterdam, NL | RustNL

Rust Week Hackathon

2025-05-16 | Utrecht, NL | Rust NL Meetup Group

RustWeek Hackathon

2025-05-17 | Amsterdam, NL | RustNL

Walking Tour around Utrecht - Saturday

2025-05-20 | Aarhus, DK | Rust Aarhus

Hack Night - Robot Edition

2025-05-20 | Leipzig, SN, DE | Rust - Modern Systems Programming in Leipzig

Topic TBD

2025-05-22 | Augsburg, DE | Rust Augsburg

Rust meetup #13

2025-05-22 | Bern, CH | Rust Bern

2025 Rust Talks Bern #3 @zentroom

2025-05-22 | Paris, FR | Rust Paris

Rust meetup #77

2025-05-22 | Stockholm, SE | Stockholm Rust

Rust Meetup @UXStream

2025-05-27 | Basel, CH | Rust Basel

Rust Meetup #11 @ Letsboot Basel

2025-05-29 | Oslo, NO | Rust Oslo

Rust Hack'n'Learn at Kampen Bistro

2025-06-04 | München, DE | Rust Munich

Rust Munich 2025 / 2 - Hacking Evening

2025-06-04 | Oxford, UK | Oxford Rust Meetup Group

Oxford Rust and C++ social

North America

2025-05-07 | Chicago, IL, US | Chicago Rust Meetup

Rust Happy Hour

2025-05-08 | México City, MX | Rust MX

Calculando con el compilador: Compiler time vs Run time. Introducción a uv

2025-05-08 | Portland, OR, US | PDXRust

Apache DataFusion: A Fast, Extensible, Modular Analytic Query Engine in Rust

2025-05-11 | Boston, MA, US | Boston Rust Meetup

Porter Square Rust Lunch, May 11

2025-05-13 | New York, NY, US | Rust NYC

Multi-Platform App in Rust @ Warp.dev && Verifying Rust's Stdlib @ CMU

2025-05-15 | Mountain View, CA, US | Hacker Dojo

RUST MEETUP at HACKER DOJO

2025-05-15 | Nashville, TN, US | Music City Rust Developers

Using Rust For Web Series 2 : Why you, Yes You. Should use Hyperscript!

2025-05-15 | Hybrid (Redmond, WA, US) | Seattle Rust User Group

May, 2025 SRUG (Seattle Rust User Group) Meetup

2025-05-20 | San Francisco, CA, US | San Francisco Rust Study Group

Rust Hacking in Person

2025-05-21 | Hybrid (Vancouver, BC, CA) | Vancouver Rust

Rust Study/Hack/Hang-out

2025-05-28 | Austin, TX, US | Rust ATX

Rust Lunch - Fareground

2025-05-29 | Atlanta, GA, US | Rust Atlanta

Rust-Atl

South America

2025-05-28 | Montevideo, DE, UY | Rust Meetup Uruguay

Primera meetup de Rust de 2025!

2025-05-31 | São Paulo, BR | Rust São Paulo Meetup

Encontro do Rust-SP na WillBank

If you are running a Rust event please add it to the calendar to get it mentioned here. Please remember to add a link to the event too. Email the Rust Community Team for access.

Jobs

Please see the latest Who's Hiring thread on r/rust

Quote of the Week

Well, the answer is basically yes. Our firmware is all Rust. Every component of our autonomy stack is Rust. Our app is 50% in Rust. And, our visualization tools are in Rust. Our production tools are in rust. The production QC software, which we ship to China, is in rust. Our internal websites are in rust. It's rust all over. We’ve drank the Rust Kool-Aid. In fact, there is no Python installed on the robots. This is not to dis Python at all, but it’s just simply not there.

We use Python for neural network training. But Python is boxed to that. Everything else is Rust. And, the advantage of using Rust exponentially builds up.

– Vivek Bagaria on filtra.io

Thanks to Brian Kung for the suggestion!

Please submit quotes and vote for next week!

This Week in Rust is edited by: nellshamrell, llogiq, cdmistman, ericseppanen, extrawurst, U007D, joelmarcey, mariannegoldin, bennyvasquez, bdillo

Email list hosting is sponsored by The Rust Foundation

Discuss on r/rust

#rust-lang #rust #rustlang #twir #long post

1 note · View note

this-week-in-rust · 2 months ago

Text

This Week in Rust 597

This Week in Rust is openly developed on GitHub and archives can be viewed at this-week-in-rust.org. If you find any errors in this week’s issue, please submit a PR.

Want TWIR in your inbox? Subscribe here.

Updates from Rust Community

Newsletters

The Embedded Rustacean Issue #44

Project/Tooling Updates

Bevy 0.16

Yelken Alpha Release Announcement

BugStalker v0.3.0 - Modern debugger for Linux x86-64. Written in Rust for Rust programs.

Observations/Thoughts

Audit of the Rust p256 Crate

We have polymorphism at home 🦀!

Migrating away from Rust

Syntactic musings on match expressions

Rust Walkthroughs

Freeing Up Gigabytes: Reclaiming Disk Space from Rust Cargo Builds

A Visual Journey Through Async Rust

[Video] Shipping Rust to Python, Typescript, and Ruby

[Video] From Rust to C and Back Again: an introduction to “foreign functions” (Long Version)

[Video] Internals of SlateDB: An embedded key-value store built on object storage

[Video] Generating 1 Million PDFs in 10 Minutes

[Video] RefinedRust - High-Assurance Verification of Rust Programs

Miscellaneous

The Company That Is All-In On Rust For Robotics

How Rolldown Works: Module Loading, Dependency Graphs, and Optimization Explained

[Video] Why Learning Rust Could Change Your Career

Crate of the Week

This week’s crate is rust-sel4, a no_std crate to bind to the Se4L microkernel APIs.

Thanks to Robbie VanVossen for the suggestion!

Please submit your suggestions and votes for next week!

Calls for Testing

An important step for RFC implementation is for people to experiment with the implementation and give feedback, especially before stabilization.

Rust

No calls for testing were issued this week by Rust, Rust language RFCs or Rustup.

Let us know if you would like your feature to be tracked as a part of this list.

Call for Participation; projects and speakers

CFP - Projects

Always wanted to contribute to open-source projects but did not know where to start? Every week we highlight some tasks from the Rust community for you to pick and get started!

Some of these tasks may also have mentors available, visit the task page for more information.

rama - add a SubdomainTrieMatcher

rama - add ffi/rama-rhai: support ability to use services and layers written in rhai

rama - support (TLS) peetprint in rama-net fingerprinting

rama - support akamai h2 passive fingerprint and expose in echo + fp services

If you are a Rust project owner and are looking for contributors, please submit tasks here or through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

CFP - Events

Are you a new or experienced speaker looking for a place to share something cool? This section highlights events that are being planned and are accepting submissions to join their event as a speaker.

No Calls for papers or presentations were submitted this week.

If you are an event organizer hoping to expand the reach of your event, please submit a link to the website through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

Updates from the Rust Project

389 pull requests were merged in the last week

Compiler

rc"" more clear error message

allow deref patterns to move out of boxes

async drop codegen

avoid re-interning in LateContext::get_def_path

implement a lint for implicit autoref of raw pointer dereference - take 2

improve error message for || (or) in let chains

stabilize let chains in the 2024 edition

deny unsafe_op_in_unsafe_fn by default

Library

add Arc::is_unique

stabilise std::ffi::c_str

stabilize proc_macro::Span::{start,end,line,column}

stabilize slice_as_chunks library feature

transmutability: support char, NonZeroXxx

Cargo

implement RFC3695: Allow boolean literals as cfg predicates

stabilize automatic garbage collection

feat(add/install): check if given crate argument would be valid with inserted @ symbol

Rustdoc

correctly display stdout and stderr in case a doctest is failing

stabilize flags for doctest cross compilation

Clippy

manual_div_ceil: fix suggestions when macro is involved

consider side effects when rewriting iterator behaviors

fix zombie_processes false positive inside closures

fix: equatable_if_let suggests wrongly when involving reference

fix: unnecessary_cast suggests extra brackets when in macro

fix: unused_unit suggests wrongly on unit never type fallback

restrict the cases where ptr_eq triggers

Rust-Analyzer

add expression fill mode variant for filling with underscore expressions

always error when failed to parse DiscoverProjectMessage

arena allocate LifetimeRefs

base-db: add more details to panic

add two new diagnostics: one for mismatch in generic arguments count, and another for mismatch in their kind

adds an assist to remove underscores from used variables

better support offset_of!()

properly handle lifetimes when checking generic arguments len

fix ide-assists raw_string suffix fail

escape raw names in labels properly

fix incorrect diagnostic for lifetime parameter count mismatch

fix type argument mismatch incorrectly triggering on inferred trait args

panics in inlay hints that produce empty text edits for closure return types

Rust Compiler Performance Triage

Strange week with lots of noise peeking through the performance runs. The only really significant change was a performance improvement that comes from allowing out of order encoding of the dep graph.

Triage done by @rylev. Revision range: 8f2819b0..25cdf1f6

Summary:

(instructions:u) mean range count Regressions ❌ (primary) 0.5% [0.1%, 3.0%] 77 Regressions ❌ (secondary) 0.6% [0.1%, 2.4%] 77 Improvements ✅ (primary) -0.7% [-1.3%, -0.2%] 106 Improvements ✅ (secondary) -0.7% [-1.2%, -0.2%] 29 All ❌✅ (primary) -0.2% [-1.3%, 3.0%] 183

4 Regressions, 2 Improvements, 4 Mixed; 2 of them in rollups 38 artifact comparisons made in total

Full report here

Approved RFCs

Changes to Rust follow the Rust RFC (request for comments) process. These are the RFCs that were approved for implementation this week:

No RFCs were approved this week.

Final Comment Period

Every week, the team announces the ‘final comment period’ for RFCs and key PRs which are reaching a decision. Express your opinions now.

Tracking Issues & PRs

Rust

Finalize repeat expr inference behaviour with inferred repeat counts

Partially stabilize LoongArch target features

Unify sidebar buttons to use the same image

de-stabilize bench attribute

Remove some unsized tuple impls now that we don’t support unsizing tuples anymore

Other Areas

Language Reference

Remove apologies about the Reference

No Items entered Final Comment Period this week for Cargo, Rust RFCs, Language Team or Unsafe Code Guidelines.

Let us know if you would like your PRs, Tracking Issues or RFCs to be tracked as a part of this list.

New and Updated RFCs

RFC: naming groups of configuration with cfg_alias

Upcoming Events

Rusty Events between 2025-04-30 - 2025-05-28 🦀

Virtual

2025-05-01 | Virtual (Girona, ES) | Rust Girona

Sessió setmanal de codificació / Weekly coding session

2025-05-03 | Virtual (Kampala, UG) | Rust Circle Meetup

Rust Circle Meetup

2025-05-04 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-05-05 | Virtual (Tel Aviv-Yafo, IL) | Rust 🦀 TLV

Tauri: Cross-Platform desktop applications with Rust and web technologies

2025-05-07 | Virtual (Indianapolis, IN, US) | Indy Rust

Indy.rs - with Social Distancing

2025-05-07 | Virtual (Rotterdam, NL) | Bevy Game Development

Bevy Meetup #10

2025-05-08 | Virtual (Girona, ES) | Rust Girona

Sessió setmanal de codificació / Weekly coding session

2025-05-08 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-05-11 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-05-13 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Second Tuesday

2025-05-15 | Virtual (Joint Meetup, Europe + Israel) | Rust Berlin, Rust Paris, London Rust Project Group, Rust Zürisee, Rust TLV, Rust Nürnberg, Rust Munich, Rust Aarhus, lunch.rs

🦀 Celebrating 10 years of Rust 1.0 🦀

2025-05-15 | Virtual (Girona, ES) | Rust Girona

Sessió setmanal de codificació / Weekly coding session

2025-05-18 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-05-20 | Virtual (London, GB) | Women in Rust

Threading through lifetimes of borrowing - the Rust way

2025-05-20 | Virtual (Washington, DC, US) | Rust DC

Mid-month Rustful

2025-05-21 | Virtual (Vancouver, BC, CA) | Vancouver Rust

Rust Study/Hack/Hang-out

2025-05-22 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-05-22 | Virtual (Girona, ES) | Rust Girona

Sessió setmanal de codificació / Weekly coding session

2025-05-25 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-05-27 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Fourth Tuesday

Asia

2025-05-24 | Bangalore/Bengaluru, IN | Rust Bangalore

May 2025 Rustacean meetup

Europe

2025-04-30 | Frankfurt, DE | Rust Rhein-Main

Kubernetes Operator in Rust

2025-05-01 | Nürnberg, DE | Rust Nuremberg

Hackers Hike 0x0

2025-05-04 | Istanbul, TR | Türkiye Rust Community

Rust Connect

2025-05-06 | Cambridge, GB | Cambridge Rust Meetup

Monthly Rust Meetup

2025-05-06 - 2025-05-07 | Paris, FR | WebAssembly and Rust Meetup

GOSIM AI Paris 2025

2025-05-06 | Paris, FR | WebAssembly and Rust Meetup (Wasm Empowering AI)

GOSIM AI Paris 2025 (Discount available)

2025-05-07 | Girona, ES | Rust Girona

Rust Girona Hack & Learn 05 2025

2025-05-07 | Köln, DE | Rust Cologne

Rust in May: FFI

2025-05-07 | Madrid, ES | MadRust

VII Lenguajes, VII Perspectivas, I Problema

2025-05-07 | Oxford, UK | Oxford Rust Meetup Group

Oxford Rust and C++ social

2025-05-08 | Gdansk, PL | Rust Gdansk

Rust Gdansk Meetup #8

2025-05-08 | London, UK | London Rust Project Group

Adopting Rust (Hosted by Lloyds bank)

2025-05-13 - 2025-05-17 | Utrecht, NL | Rust NL

RustWeek 2025

2025-05-14 | Reading, UK | Reading Rust Workshop

Reading Rust Meetup

2025-05-15 | Oslo, NO | Rust Oslo

Rust 10-year anniversary @ Appear

2025-05-16 | Amsterdam, NL | RustNL

Rust Week Hackathon

2025-05-16 | Utrecht, NL | Rust NL Meetup Group

RustWeek Hackathon

2025-05-20 | Aarhus, DK | Rust Aarhus

Hack Night - Robot Edition

2025-05-20 | Leipzig, SN, DE | Rust - Modern Systems Programming in Leipzig

Topic TBD

2025-05-22 | Bern, CH | Rust Bern

2025 Rust Talks Bern #3 @zentroom

2025-05-22 | Paris, FR | Rust Paris

Rust meetup #77

2025-05-27 | Basel, CH | Rust Basel

Rust Meetup #11 @ Letsboot Basel

North America

2025-05-01 | Saint Louis, MO, US | STL Rust

SIUE Capstone Project reflections on Rust

2025-05-03 | Boston, MA, US | Boston Rust Meetup

Boston Common Rust Lunch, May 3

2025-05-07 | Chicago, IL, US | Chicago Rust Meetup

Rust Happy Hour

2025-05-08 | México City, MX | Rust MX

Calculando con el compilador: Compiler time vs Run time. Introducción a uv

2025-05-08 | Portland, OR, US | PDXRust

Apache DataFusion: A Fast, Extensible, Modular Analytic Query Engine in Rust

2025-05-11 | Boston, MA, US | Boston Rust Meetup

Porter Square Rust Lunch, May 11

2025-05-15 | Nashville, TN, US | Music City Rust Developers

Using Rust For Web Series 2 : Why you, Yes You. Should use Hyperscript!

2025-05-15 | Redmond, WA, US | Seattle Rust User Group

May, 2025 SRUG (Seattle Rust User Group) Meetup

2025-05-20 | San Francisco, CA, US | San Francisco Rust Study Group

Rust Hacking in Person

2025-05-28 | Austin, TX, US | Rust ATX

Rust Lunch - Fareground

South America

2025-05-28 | Montevideo, DE, UY | Rust Meetup Uruguay

Primera meetup de Rust en 2025!

If you are running a Rust event please add it to the calendar to get it mentioned here. Please remember to add a link to the event too. Email the Rust Community Team for access.

Jobs

Please see the latest Who’s Hiring thread on r/rust

Quote of the Week

With Bevy clearly being an extended test suite for Rust’s trait solver, how did you get the idea to also turn it into a game engine?

Every sufficiently advanced test is indistinguishable from a game engine 🙂

– /u/0x564A00 and /u/_cart on /r/rust

Thanks to Ludwig Stecher and Josh Triplett for the suggestion!

Please submit quotes and vote for next week!

This Week in Rust is edited by: nellshamrell, llogiq, cdmistman, ericseppanen, extrawurst, U007D, joelmarcey, mariannegoldin, bennyvasquez, bdillo

Email list hosting is sponsored by The Rust Foundation

Discuss on r/rust

#rust-lang #rust #rustlang #twir #long post

2 notes · View notes

this-week-in-rust · 2 months ago

Text

This Week in Rust 597

This Week in Rust is openly developed on GitHub and archives can be viewed at this-week-in-rust.org. If you find any errors in this week's issue, please submit a PR.

Want TWIR in your inbox? Subscribe here.

Updates from Rust Community

Newsletters

The Embedded Rustacean Issue #44

Project/Tooling Updates

Bevy 0.16

Yelken Alpha Release Announcement

BugStalker v0.3.0 - Modern debugger for Linux x86-64. Written in Rust for Rust programs.

Observations/Thoughts

Audit of the Rust p256 Crate

We have polymorphism at home 🦀!

Migrating away from Rust

Syntactic musings on match expressions

Rust Walkthroughs

Freeing Up Gigabytes: Reclaiming Disk Space from Rust Cargo Builds

A Visual Journey Through Async Rust

[Video] Shipping Rust to Python, Typescript, and Ruby

[Video] From Rust to C and Back Again: an introduction to "foreign functions" (Long Version)

[Video] Internals of SlateDB: An embedded key-value store built on object storage

[Video] Generating 1 Million PDFs in 10 Minutes

[Video] RefinedRust - High-Assurance Verification of Rust Programs

Miscellaneous

The Company That Is All-In On Rust For Robotics

How Rolldown Works: Module Loading, Dependency Graphs, and Optimization Explained

[Video] Why Learning Rust Could Change Your Career

Crate of the Week

This week's crate is rust-sel4, a no_std crate to bind to the Se4L microkernel APIs.

Thanks to Robbie VanVossen for the suggestion!

Please submit your suggestions and votes for next week!

Calls for Testing

An important step for RFC implementation is for people to experiment with the implementation and give feedback, especially before stabilization.

Rust

No calls for testing were issued this week by Rust, Rust language RFCs or Rustup.

Let us know if you would like your feature to be tracked as a part of this list.

Call for Participation; projects and speakers

CFP - Projects

Always wanted to contribute to open-source projects but did not know where to start? Every week we highlight some tasks from the Rust community for you to pick and get started!

Some of these tasks may also have mentors available, visit the task page for more information.

rama - add a SubdomainTrieMatcher

rama - add ffi/rama-rhai: support ability to use services and layers written in rhai

rama - support (TLS) peetprint in rama-net fingerprinting

rama - support akamai h2 passive fingerprint and expose in echo + fp services

If you are a Rust project owner and are looking for contributors, please submit tasks here or through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

CFP - Events

Are you a new or experienced speaker looking for a place to share something cool? This section highlights events that are being planned and are accepting submissions to join their event as a speaker.

No Calls for papers or presentations were submitted this week.

If you are an event organizer hoping to expand the reach of your event, please submit a link to the website through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

Updates from the Rust Project

389 pull requests were merged in the last week

Compiler

rc"" more clear error message

allow deref patterns to move out of boxes

async drop codegen

avoid re-interning in LateContext::get_def_path

implement a lint for implicit autoref of raw pointer dereference - take 2

improve error message for || (or) in let chains

stabilize let chains in the 2024 edition

deny unsafe_op_in_unsafe_fn by default

Library

add Arc::is_unique

stabilise std::ffi::c_str

stabilize proc_macro::Span::{start,end,line,column}

stabilize slice_as_chunks library feature

transmutability: support char, NonZeroXxx

Cargo

implement RFC3695: Allow boolean literals as cfg predicates

stabilize automatic garbage collection

feat(add/install): check if given crate argument would be valid with inserted @ symbol

Rustdoc

correctly display stdout and stderr in case a doctest is failing

stabilize flags for doctest cross compilation

Clippy

manual_div_ceil: fix suggestions when macro is involved

consider side effects when rewriting iterator behaviors

fix zombie_processes false positive inside closures

fix: equatable_if_let suggests wrongly when involving reference

fix: unnecessary_cast suggests extra brackets when in macro

fix: unused_unit suggests wrongly on unit never type fallback

restrict the cases where ptr_eq triggers

Rust-Analyzer

add expression fill mode variant for filling with underscore expressions

always error when failed to parse DiscoverProjectMessage

arena allocate LifetimeRefs

base-db: add more details to panic

add two new diagnostics: one for mismatch in generic arguments count, and another for mismatch in their kind

adds an assist to remove underscores from used variables

better support offset_of!()

properly handle lifetimes when checking generic arguments len

fix ide-assists raw_string suffix fail

escape raw names in labels properly

fix incorrect diagnostic for lifetime parameter count mismatch

fix type argument mismatch incorrectly triggering on inferred trait args

panics in inlay hints that produce empty text edits for closure return types

Rust Compiler Performance Triage

Strange week with lots of noise peeking through the performance runs. The only really significant change was a performance improvement that comes from allowing out of order encoding of the dep graph.

Triage done by @rylev. Revision range: 8f2819b0..25cdf1f6

Summary:

4 Regressions, 2 Improvements, 4 Mixed; 2 of them in rollups 38 artifact comparisons made in total

Full report here

Approved RFCs

Changes to Rust follow the Rust RFC (request for comments) process. These are the RFCs that were approved for implementation this week:

No RFCs were approved this week.

Final Comment Period

Every week, the team announces the 'final comment period' for RFCs and key PRs which are reaching a decision. Express your opinions now.

Tracking Issues & PRs

Rust

Finalize repeat expr inference behaviour with inferred repeat counts

Partially stabilize LoongArch target features

Unify sidebar buttons to use the same image

de-stabilize bench attribute

Remove some unsized tuple impls now that we don't support unsizing tuples anymore

Other Areas

Language Reference

Remove apologies about the Reference

No Items entered Final Comment Period this week for Cargo, Rust RFCs, Language Team or Unsafe Code Guidelines.

Let us know if you would like your PRs, Tracking Issues or RFCs to be tracked as a part of this list.

New and Updated RFCs

RFC: naming groups of configuration with cfg_alias

Upcoming Events

Rusty Events between 2025-04-30 - 2025-05-28 🦀

Virtual

2025-05-01 | Virtual (Girona, ES) | Rust Girona

Sessió setmanal de codificació / Weekly coding session

2025-05-03 | Virtual (Kampala, UG) | Rust Circle Meetup

Rust Circle Meetup

2025-05-04 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-05-05 | Virtual (Tel Aviv-Yafo, IL) | Rust 🦀 TLV

Tauri: Cross-Platform desktop applications with Rust and web technologies

2025-05-07 | Virtual (Indianapolis, IN, US) | Indy Rust

Indy.rs - with Social Distancing

2025-05-07 | Virtual (Rotterdam, NL) | Bevy Game Development

Bevy Meetup #10

2025-05-08 | Virtual (Girona, ES) | Rust Girona

Sessió setmanal de codificació / Weekly coding session

2025-05-08 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-05-11 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-05-13 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Second Tuesday

2025-05-15 | Virtual (Joint Meetup, Europe + Israel) | Rust Berlin, Rust Paris, London Rust Project Group, Rust Zürisee, Rust TLV, Rust Nürnberg, Rust Munich, Rust Aarhus, lunch.rs

🦀 Celebrating 10 years of Rust 1.0 🦀

2025-05-15 | Virtual (Girona, ES) | Rust Girona

Sessió setmanal de codificació / Weekly coding session

2025-05-18 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-05-20 | Virtual (London, GB) | Women in Rust

Threading through lifetimes of borrowing - the Rust way

2025-05-20 | Virtual (Washington, DC, US) | Rust DC

Mid-month Rustful

2025-05-21 | Virtual (Vancouver, BC, CA) | Vancouver Rust

Rust Study/Hack/Hang-out

2025-05-22 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-05-22 | Virtual (Girona, ES) | Rust Girona

Sessió setmanal de codificació / Weekly coding session

2025-05-25 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Rust Readers Discord Discussion: Async Rust

2025-05-27 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Fourth Tuesday

Asia

2025-05-24 | Bangalore/Bengaluru, IN | Rust Bangalore

May 2025 Rustacean meetup

Europe

2025-04-30 | Frankfurt, DE | Rust Rhein-Main

Kubernetes Operator in Rust

2025-05-01 | Nürnberg, DE | Rust Nuremberg

Hackers Hike 0x0

2025-05-04 | Istanbul, TR | Türkiye Rust Community

Rust Connect

2025-05-06 | Cambridge, GB | Cambridge Rust Meetup

Monthly Rust Meetup

2025-05-06 - 2025-05-07 | Paris, FR | WebAssembly and Rust Meetup

GOSIM AI Paris 2025

2025-05-06 | Paris, FR | WebAssembly and Rust Meetup (Wasm Empowering AI)

GOSIM AI Paris 2025 (Discount available)

2025-05-07 | Girona, ES | Rust Girona

Rust Girona Hack & Learn 05 2025

2025-05-07 | Köln, DE | Rust Cologne

Rust in May: FFI

2025-05-07 | Madrid, ES | MadRust

VII Lenguajes, VII Perspectivas, I Problema

2025-05-07 | Oxford, UK | Oxford Rust Meetup Group

Oxford Rust and C++ social

2025-05-08 | Gdansk, PL | Rust Gdansk

Rust Gdansk Meetup #8

2025-05-08 | London, UK | London Rust Project Group

Adopting Rust (Hosted by Lloyds bank)

2025-05-13 - 2025-05-17 | Utrecht, NL | Rust NL

RustWeek 2025

2025-05-14 | Reading, UK | Reading Rust Workshop

Reading Rust Meetup

2025-05-15 | Oslo, NO | Rust Oslo

Rust 10-year anniversary @ Appear

2025-05-16 | Amsterdam, NL | RustNL

Rust Week Hackathon

2025-05-16 | Utrecht, NL | Rust NL Meetup Group

RustWeek Hackathon

2025-05-20 | Aarhus, DK | Rust Aarhus

Hack Night - Robot Edition

2025-05-20 | Leipzig, SN, DE | Rust - Modern Systems Programming in Leipzig

Topic TBD

2025-05-22 | Bern, CH | Rust Bern

2025 Rust Talks Bern #3 @zentroom

2025-05-22 | Paris, FR | Rust Paris

Rust meetup #77

2025-05-27 | Basel, CH | Rust Basel

Rust Meetup #11 @ Letsboot Basel

North America

2025-05-01 | Saint Louis, MO, US | STL Rust

SIUE Capstone Project reflections on Rust

2025-05-03 | Boston, MA, US | Boston Rust Meetup

Boston Common Rust Lunch, May 3

2025-05-07 | Chicago, IL, US | Chicago Rust Meetup

Rust Happy Hour

2025-05-08 | México City, MX | Rust MX

Calculando con el compilador: Compiler time vs Run time. Introducción a uv

2025-05-08 | Portland, OR, US | PDXRust

Apache DataFusion: A Fast, Extensible, Modular Analytic Query Engine in Rust

2025-05-11 | Boston, MA, US | Boston Rust Meetup

Porter Square Rust Lunch, May 11

2025-05-15 | Nashville, TN, US | Music City Rust Developers

Using Rust For Web Series 2 : Why you, Yes You. Should use Hyperscript!

2025-05-15 | Redmond, WA, US | Seattle Rust User Group

May, 2025 SRUG (Seattle Rust User Group) Meetup

2025-05-20 | San Francisco, CA, US | San Francisco Rust Study Group

Rust Hacking in Person

2025-05-28 | Austin, TX, US | Rust ATX

Rust Lunch - Fareground

South America

2025-05-28 | Montevideo, DE, UY | Rust Meetup Uruguay

Primera meetup de Rust en 2025!

If you are running a Rust event please add it to the calendar to get it mentioned here. Please remember to add a link to the event too. Email the Rust Community Team for access.

Jobs

Please see the latest Who's Hiring thread on r/rust

Quote of the Week

With Bevy clearly being an extended test suite for Rust's trait solver, how did you get the idea to also turn it into a game engine?

Every sufficiently advanced test is indistinguishable from a game engine 🙂

– /u/0x564A00 and /u/_cart on /r/rust

Thanks to Ludwig Stecher and Josh Triplett for the suggestion!

Please submit quotes and vote for next week!

This Week in Rust is edited by: nellshamrell, llogiq, cdmistman, ericseppanen, extrawurst, U007D, joelmarcey, mariannegoldin, bennyvasquez, bdillo

Email list hosting is sponsored by The Rust Foundation

Discuss on r/rust

#rust-lang #rust #rustlang #twir #long post

2 notes · View notes

this-week-in-rust · 2 months ago

Text

This Week in Rust 596

This Week in Rust is openly developed on GitHub and archives can be viewed at this-week-in-rust.org. If you find any errors in this week’s issue, please submit a PR.

Want TWIR in your inbox? Subscribe here.

Updates from Rust Community

Foundation

Project Director Update — April 2025

Project/Tooling Updates

Gitoxide April 2025

Askama and Rinja merge

rust-analyzer changelog #282

Observations/Thoughts

Two ways of interpreting visibility in Rust

Does using Rust really make your software safer? - Blog - Tweede golf

Body::poll_progress

ratatui: are we embedded yet?

Zig -> allocators -> Rust ergonomics

Marching Events: What does iCalendar have to do with ray marching?

[audio] Nushell with WindSoilder

[audio] Microsoft with Victor Ciura

Rust Walkthroughs

Implementation of Rust panics in the standard library

How a GraphQL DataLoader works

Implementing a GraphQL DataLoader the hard way

Crate of the Week

This week’s crate is Maycoon, an experimental vello/wGPU-based UI framework.

Thanks to DraftedDev for the self-suggestion!

Please submit your suggestions and votes for next week!

Calls for Testing

An important step for RFC implementation is for people to experiment with the implementation and give feedback, especially before stabilization.

No calls for testing were issued this week by Rust, Rust language RFCs or Rustup.

Let us know if you would like your feature to be tracked as a part of this list.

RFCs

Rust

Rustup

Call for Participation; projects and speakers

CFP - Projects

Always wanted to contribute to open-source projects but did not know where to start? Every week we highlight some tasks from the Rust community for you to pick and get started!

Some of these tasks may also have mentors available, visit the task page for more information.

If you are a Rust project owner and are looking for contributors, please submit tasks here or through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

CFP - Events

Are you a new or experienced speaker looking for a place to share something cool? This section highlights events that are being planned and are accepting submissions to join their event as a speaker.

If you are an event organizer hoping to expand the reach of your event, please submit a link to the website through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

Updates from the Rust Project

465 pull requests were merged in the last week

Compiler

avoid overflow when generating debuginfo for expanding recursive types

deref patterns: implement implicit deref patterns

fix wrong “move keyword” suggestion for async gen block

improve parse errors for stray lifetimes in type position

make #[naked] an unsafe attribute

rewrite on_unimplemented format string parser

Miri

miri: implement file deletion on Windows

miri: use std-declared intrinsics rather than copying the declaration

Library

add next_index to Enumerate

add retries to remove and create dir all

sync::mpsc: prevent double free on Drop

implement Default for raw pointers

implement pin!() using super let

stabilize -Zdwarf-version as -Cdwarf-version

stabilize cfg_boolean_literals

stabilize naked_functions

simd intrinsics with mask: accept unsigned integer masks, and fix some of the errors

add vec_extract, vec_insert, vec_promote and vec_insert_and_zero

Cargo

use zlib-rs for gzip compression in rust code

Rustdoc

fix error when an intra doc link is trying to resolve an empty associated item

rustdoc-json: output target feature information

support inlined cross-crate re-exported trait aliases

Clippy

clippy: bool_to_int_with_if: properly handle macros

clippy: empty_enum_variants_with_brackets: Do not lint reachable enums and enum variants used as functions in the same crate

clippy: iter_kv_map: recognize references on maps as well

clippy: manual_ok_err: don’t lint subpatterns

clippy: match_single_binding: allow macros in scrutinee and patterns

clippy: missing_asserts_for_indexing: consider assert_eq!() as well

clippy: ptr_cast_constness: show snippet from the right context

clippy: build complete usable type from a type-relative prefix

clippy: check for lifetime uses in closures as well

clippy: do not recurse forever in significant_drop_tightening

clippy: fix question_mark suggesting when type is behind Deref include parentheses

clippy: fix: unnecessary_lazy_evaluations suggests wrongly for async closure

clippy: make borrow_as_ptr flag implicit casts as well

clippy: new lint: redundant_test_prefix

clippy: new lint: swap_with_temporary

clippy: replace interning of string literals with preinterned symbols

Rust-Analyzer

rust-analyzer: add semicolon to use

rust-analyzer: allow training PGO on a custom crate and enable it Windows on CI

rust-analyzer: allow using null to unset an environment variable

rust-analyzer: build aarch64 builds on CI with PGO

rust-analyzer: don’t ignore config values that fail to parse

rust-analyzer: add pub(crate) mod option for unlinked files

rust-analyzer: allow unsetting env vars in server.extraEnv config

rust-analyzer: enhance signature help to display generic parameters for callables and default values for generic args

rust-analyzer: parse super let

rust-analyzer: parse generic consts

rust-analyzer: Extract into function include inline variable in fmt macro

rust-analyzer: fix completion_snippets_custom config always erroring

rust-analyzer: fix a bug with predicate lowering of associated items

rust-analyzer: fix a panic when a trait method in an impl declares a lifetime parameter not in the trait declaration

rust-analyzer: highlighting for tail expr in labelled blocks

rust-analyzer: sort notable traits in hover

rust-analyzer: support unstable UnsafePinned struct in type layout calc

rust-analyzer: use PGO on Linux x64 builds

rust-analyzer: use PGO on macOS x64 and arm64 builds

Rust Compiler Performance Triage

Mostly positive week. Most of the improvements come from a revert of a regression from a few weeks ago, but we also get nice wins from re-using Sized fast-path, coming from Sized hierarchy implementation work.

Triage done by @panstromek. Revision range: 15f58c46..8f2819b0

Summary:

(instructions:u) mean range count Regressions ❌ (primary) 1.3% [0.4%, 2.1%] 7 Regressions ❌ (secondary) - - 0 Improvements ✅ (primary) -1.0% [-12.9%, -0.1%] 144 Improvements ✅ (secondary) -2.2% [-12.3%, -0.2%] 111 All ❌✅ (primary) -0.9% [-12.9%, 2.1%] 151

Full report here

Approved RFCs

Changes to Rust follow the Rust RFC (request for comments) process. These are the RFCs that were approved for implementation this week:

No RFCs were approved this week.

Final Comment Period

Every week, the team announces the ‘final comment period’ for RFCs and key PRs which are reaching a decision. Express your opinions now.

Tracking Issues & PRs

Rust

Stabilize <[T; N]>::as_mut_slice as const

Tracking Issue for hint::select_unpredictable

fix(test): Expose ’–no-capture’ in favor of --nocapture

stabilize ptr::swap_nonoverlapping in const

Stabilize the avx512 target features

Don’t allow flattened format_args in const.

lexer: Treat more floats with empty exponent as valid tokens

Stabilize proc_macro::Span::{start,end,line,column}.

check types of const param defaults

Stabilize flags for doctest cross compilation

Other Areas

Cargo

fix: default to all targets when using --edition and --edition-idioms in cargo fix

Language Reference

Clarify interaction of asm-goto with IBT

No Items entered Final Comment Period this week for Rust RFCs, Language Team or Unsafe Code Guidelines.

Let us know if you would like your PRs, Tracking Issues or RFCs to be tracked as a part of this list.

New and Updated RFCs

RFC: Disable niche layout optimization on enum discriminants

RFC: Assume bounds for generic functions

RFC: input macros

Upcoming Events

Rusty Events between 2025-04-23 - 2025-05-21 🦀

Virtual

2025-04-23 | Virtual (Cardiff, UK) | Rust and C++ Cardiff

Beyond embedded - OS development in Rust

2025-04-24 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-04-24 | Virtual (Charlottesville, VA, US) | Charlottesville Rust Meetup

Part 2: Quantum Computers Can’t Rust-Proof This!“

2025-05-03 | Virtual (Kampala, UG) | Rust Circle Meetup

Rust Circle Meetup

2025-05-05 | Virtual (Tel Aviv-Yafo, IL) | Rust 🦀 TLV

Tauri: Cross-Platform desktop applications with Rust and web technologies

2025-05-07 | Virtual (Indianapolis, IN, US) | Indy Rust

Indy.rs - with Social Distancing

2025-05-07 | Virtual (Rotterdam, NL) | Bevy Game Development

Bevy Meetup #10

2025-05-08 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-05-13 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Second Tuesday

2025-05-15 | Virtual (Berlin, DE) | Rust Berlin

🦀 Celebrating 10 years of Rust 1.0 🦀 | Livestream

2025-05-20 | Virtual (Washington, DC, US) | Rust DC

Mid-month Rustful

2025-05-21 | Virtual (Vancouver, BC, CA) | Vancouver Rust

Rust Study/Hack/Hang-out

Europe

2025-04-23 | London, UK | London Rust Project Group

Fusing Python with Rust using raw C bindings

2025-04-24 | Aarhus, DK | Rust Aarhus

Talk Night and Birthday Party at MFT Energy

2025-04-24 | Copenhagen, DK | Copenhagen Rust Community

Rust meetup #57

2025-04-24 | Edinburgh, UK | Rust and Friends

Rust and Friends (evening pub)

2025-04-24 | Manchester, UK | Rust Manchester

Rust Manchester April Code Night

2025-04-25 | Edinburgh, UK | Rust and Friends

Rust and Friends (daytime coffee)

2025-04-26 | Stockholm, SE | Stockholm Rust

Ferris’ Fika Forum #11

2025-04-29 | London, UK | Rust London User Group

LDN Talks April 2025 Community Showcase

2025-04-29 | Paris, FR | Rust Paris

Rust meetup #76

2025-04-30 | Frankfurt, DE | Rust Rhein-Main

Kubernetes Operator in Rust

2025-05-01 | Nürnberg, DE | Rust Nuremberg

Hackers Hike 0x0

2025-05-04 | Istanbul, TR | Türkiye Rust Community

Rust Connect

2025-05-06 - 2025-05-07 | Paris, FR | WebAssembly and Rust Meetup

GOSIM AI Paris 2025

2025-05-06 | Paris, FR | WebAssembly and Rust Meetup (Wasm Empowering AI)

GOSIM AI Paris 2025 (Discount available)

2025-05-07 | Madrid, ES | MadRust

VII Lenguajes, VII Perspectivas, I Problema

2025-05-07 | Oxford, UK | Oxford Rust Meetup Group

Oxford Rust and C++ social

2025-05-08 | Gdansk, PL | Rust Gdansk

Rust Gdansk Meetup #8

2025-05-08 | London, UK | London Rust Project Group

Adopting Rust (Hosted by Lloyds bank)

2025-05-13 - 2025-05-17 | Utrecht, NL | Rust NL

RustWeek 2025

2025-05-14 | Reading, UK | Reading Rust Workshop

Reading Rust Meetup

2025-05-16 | Utrecht, NL | Rust NL Meetup Group

RustWeek Hackathon

2025-05-20 | Aarhus, DK | Rust Aarhus

Hack Night - Robot Edition

2025-05-20 | Leipzig, SN, DE | Rust - Modern Systems Programming in Leipzig

Topic TBD

North America

2025-04-23 | Austin, TX, US | Rust ATX

Rust Lunch - Fareground

2025-04-23 | Austin, TX, US | Rust ATX

Rust Lunch - Fareground 2025-04-23 | Spokane, WA, US | Spokane Rust

Community Show & Tell at Fuel Coworking

2025-04-24 | Atlanta, GA, US | Rust Atlanta

3rd 3RD TIME OMG YES!

2025-04-25 | Boston, MA, US | Boston Rust Meetup

Ball Square Rust Lunch, Apr 25

2025-05-01 | Saint Louis, MO, US | STL Rust

SIUE Capstone Project reflections on Rust

2025-05-03 | Boston, MA, US | Boston Rust Meetup

Boston Common Rust Lunch, May 3

2025-05-08 | México City, MX | Rust MX

Calculando con el compilador: Compiler time vs Run time. Introducción a uv

2025-05-08 | Portland, OR, US | PDXRust

Apache DataFusion: A Fast, Extensible, Modular Analytic Query Engine in Rust

2025-05-11 | Boston, MA, US | Boston Rust Meetup

Porter Square Rust Lunch, May 11 2025-05-15 | Nashville, TN, US | Music City Rust Developers

Using Rust For Web Series 2 : Why you, Yes You. Should use Hyperscript!

2025-05-15 | Redmond, WA, US | Seattle Rust User Group

May, 2025 SRUG (Seattle Rust User Group) Meetup

2025-05-20 | San Francisco, CA, US | San Francisco Rust Study Group

Rust Hacking in Person

South America

2025-05-28 | Montevideo, DE, UY | Rust Meetup Uruguay

Primera meetup de Rust en 2025!

If you are running a Rust event please add it to the calendar to get it mentioned here. Please remember to add a link to the event too. Email the Rust Community Team for access.

Jobs

Please see the latest Who’s Hiring thread on r/rust

Quote of the Week

I don’t think about rust either. That’s a compiler’s job

– Steve Klabnik on Bluesky

Thanks to Matt Wismer for the suggestion!

Please submit quotes and vote for next week!

This Week in Rust is edited by: nellshamrell, llogiq, cdmistman, ericseppanen, extrawurst, U007D, joelmarcey, mariannegoldin, bennyvasquez, bdillo

Email list hosting is sponsored by The Rust Foundation

Discuss on r/rust

#rust-lang #rust #rustlang #twir #long post

1 note · View note

this-week-in-rust · 2 months ago

Text

This Week in Rust 596

This Week in Rust is openly developed on GitHub and archives can be viewed at this-week-in-rust.org. If you find any errors in this week's issue, please submit a PR.

Want TWIR in your inbox? Subscribe here.

Updates from Rust Community

Foundation

Project Director Update — April 2025

Project/Tooling Updates

Gitoxide April 2025

Askama and Rinja merge

rust-analyzer changelog #282

Observations/Thoughts

Two ways of interpreting visibility in Rust

Does using Rust really make your software safer? - Blog - Tweede golf

Body::poll_progress

ratatui: are we embedded yet?

Zig -> allocators -> Rust ergonomics

Marching Events: What does iCalendar have to do with ray marching?

[audio] Nushell with WindSoilder

[audio] Microsoft with Victor Ciura

Rust Walkthroughs

Implementation of Rust panics in the standard library

How a GraphQL DataLoader works

Implementing a GraphQL DataLoader the hard way

Crate of the Week

This week's crate is Maycoon, an experimental vello/wGPU-based UI framework.

Thanks to DraftedDev for the self-suggestion!

Please submit your suggestions and votes for next week!

Calls for Testing

An important step for RFC implementation is for people to experiment with the implementation and give feedback, especially before stabilization.

No calls for testing were issued this week by Rust, Rust language RFCs or Rustup.

Let us know if you would like your feature to be tracked as a part of this list.

RFCs

Rust

Rustup

Call for Participation; projects and speakers

CFP - Projects

Always wanted to contribute to open-source projects but did not know where to start? Every week we highlight some tasks from the Rust community for you to pick and get started!

Some of these tasks may also have mentors available, visit the task page for more information.

If you are a Rust project owner and are looking for contributors, please submit tasks here or through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

CFP - Events

Are you a new or experienced speaker looking for a place to share something cool? This section highlights events that are being planned and are accepting submissions to join their event as a speaker.

If you are an event organizer hoping to expand the reach of your event, please submit a link to the website through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

Updates from the Rust Project

465 pull requests were merged in the last week

Compiler

avoid overflow when generating debuginfo for expanding recursive types

deref patterns: implement implicit deref patterns

fix wrong "move keyword" suggestion for async gen block

improve parse errors for stray lifetimes in type position

make #[naked] an unsafe attribute

rewrite on_unimplemented format string parser

Miri

miri: implement file deletion on Windows

miri: use std-declared intrinsics rather than copying the declaration

Library

add next_index to Enumerate

add retries to remove and create dir all

sync::mpsc: prevent double free on Drop

implement Default for raw pointers

implement pin!() using super let

stabilize -Zdwarf-version as -Cdwarf-version

stabilize cfg_boolean_literals

stabilize naked_functions

simd intrinsics with mask: accept unsigned integer masks, and fix some of the errors

add vec_extract, vec_insert, vec_promote and vec_insert_and_zero

Cargo

use zlib-rs for gzip compression in rust code

Rustdoc

fix error when an intra doc link is trying to resolve an empty associated item

rustdoc-json: output target feature information

support inlined cross-crate re-exported trait aliases

Clippy

clippy: bool_to_int_with_if: properly handle macros

clippy: empty_enum_variants_with_brackets: Do not lint reachable enums and enum variants used as functions in the same crate

clippy: iter_kv_map: recognize references on maps as well

clippy: manual_ok_err: don't lint subpatterns

clippy: match_single_binding: allow macros in scrutinee and patterns

clippy: missing_asserts_for_indexing: consider assert_eq!() as well

clippy: ptr_cast_constness: show snippet from the right context

clippy: build complete usable type from a type-relative prefix

clippy: check for lifetime uses in closures as well

clippy: do not recurse forever in significant_drop_tightening

clippy: fix question_mark suggesting when type is behind Deref include parentheses

clippy: fix: unnecessary_lazy_evaluations suggests wrongly for async closure

clippy: make borrow_as_ptr flag implicit casts as well

clippy: new lint: redundant_test_prefix

clippy: new lint: swap_with_temporary

clippy: replace interning of string literals with preinterned symbols

Rust-Analyzer

rust-analyzer: add semicolon to use

rust-analyzer: allow training PGO on a custom crate and enable it Windows on CI

rust-analyzer: allow using null to unset an environment variable

rust-analyzer: build aarch64 builds on CI with PGO

rust-analyzer: don't ignore config values that fail to parse

rust-analyzer: add pub(crate) mod option for unlinked files

rust-analyzer: allow unsetting env vars in server.extraEnv config

rust-analyzer: enhance signature help to display generic parameters for callables and default values for generic args

rust-analyzer: parse super let

rust-analyzer: parse generic consts

rust-analyzer: Extract into function include inline variable in fmt macro

rust-analyzer: fix completion_snippets_custom config always erroring

rust-analyzer: fix a bug with predicate lowering of associated items

rust-analyzer: fix a panic when a trait method in an impl declares a lifetime parameter not in the trait declaration

rust-analyzer: highlighting for tail expr in labelled blocks

rust-analyzer: sort notable traits in hover

rust-analyzer: support unstable UnsafePinned struct in type layout calc

rust-analyzer: use PGO on Linux x64 builds

rust-analyzer: use PGO on macOS x64 and arm64 builds

Rust Compiler Performance Triage

Triage done by @panstromek. Revision range: 15f58c46..8f2819b0

Summary:

Full report here

Approved RFCs

Changes to Rust follow the Rust RFC (request for comments) process. These are the RFCs that were approved for implementation this week:

No RFCs were approved this week.

Final Comment Period

Every week, the team announces the 'final comment period' for RFCs and key PRs which are reaching a decision. Express your opinions now.

Tracking Issues & PRs

Rust

Stabilize <[T; N]>::as_mut_slice as const

Tracking Issue for hint::select_unpredictable

fix(test): Expose '--no-capture' in favor of --nocapture

stabilize ptr::swap_nonoverlapping in const

Stabilize the avx512 target features

Don't allow flattened format_args in const.

lexer: Treat more floats with empty exponent as valid tokens

Stabilize proc_macro::Span::{start,end,line,column}.

check types of const param defaults

Stabilize flags for doctest cross compilation

Other Areas

Cargo

fix: default to all targets when using --edition and --edition-idioms in cargo fix

Language Reference

Clarify interaction of asm-goto with IBT

No Items entered Final Comment Period this week for Rust RFCs, Language Team or Unsafe Code Guidelines.

Let us know if you would like your PRs, Tracking Issues or RFCs to be tracked as a part of this list.

New and Updated RFCs

RFC: Disable niche layout optimization on enum discriminants

RFC: Assume bounds for generic functions

RFC: input macros

Upcoming Events

Rusty Events between 2025-04-23 - 2025-05-21 🦀

Virtual

2025-04-23 | Virtual (Cardiff, UK) | Rust and C++ Cardiff

Beyond embedded - OS development in Rust

2025-04-24 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-04-24 | Virtual (Charlottesville, VA, US) | Charlottesville Rust Meetup

Part 2: Quantum Computers Can’t Rust-Proof This!"

2025-05-03 | Virtual (Kampala, UG) | Rust Circle Meetup

Rust Circle Meetup

2025-05-05 | Virtual (Tel Aviv-Yafo, IL) | Rust 🦀 TLV

Tauri: Cross-Platform desktop applications with Rust and web technologies

2025-05-07 | Virtual (Indianapolis, IN, US) | Indy Rust

Indy.rs - with Social Distancing

2025-05-07 | Virtual (Rotterdam, NL) | Bevy Game Development

Bevy Meetup #10

2025-05-08 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-05-13 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Second Tuesday

2025-05-15 | Virtual (Berlin, DE) | Rust Berlin

🦀 Celebrating 10 years of Rust 1.0 🦀 | Livestream

2025-05-20 | Virtual (Washington, DC, US) | Rust DC

Mid-month Rustful

2025-05-21 | Virtual (Vancouver, BC, CA) | Vancouver Rust

Rust Study/Hack/Hang-out

Europe

2025-04-23 | London, UK | London Rust Project Group

Fusing Python with Rust using raw C bindings

2025-04-24 | Aarhus, DK | Rust Aarhus

Talk Night and Birthday Party at MFT Energy

2025-04-24 | Copenhagen, DK | Copenhagen Rust Community

Rust meetup #57

2025-04-24 | Edinburgh, UK | Rust and Friends

Rust and Friends (evening pub)

2025-04-24 | Manchester, UK | Rust Manchester

Rust Manchester April Code Night

2025-04-25 | Edinburgh, UK | Rust and Friends

Rust and Friends (daytime coffee)

2025-04-26 | Stockholm, SE | Stockholm Rust

Ferris' Fika Forum #11

2025-04-29 | London, UK | Rust London User Group

LDN Talks April 2025 Community Showcase

2025-04-29 | Paris, FR | Rust Paris

Rust meetup #76

2025-04-30 | Frankfurt, DE | Rust Rhein-Main

Kubernetes Operator in Rust

2025-05-01 | Nürnberg, DE | Rust Nuremberg

Hackers Hike 0x0

2025-05-04 | Istanbul, TR | Türkiye Rust Community

Rust Connect

2025-05-06 - 2025-05-07 | Paris, FR | WebAssembly and Rust Meetup

GOSIM AI Paris 2025

2025-05-06 | Paris, FR | WebAssembly and Rust Meetup (Wasm Empowering AI)

GOSIM AI Paris 2025 (Discount available)

2025-05-07 | Madrid, ES | MadRust

VII Lenguajes, VII Perspectivas, I Problema

2025-05-07 | Oxford, UK | Oxford Rust Meetup Group

Oxford Rust and C++ social

2025-05-08 | Gdansk, PL | Rust Gdansk

Rust Gdansk Meetup #8

2025-05-08 | London, UK | London Rust Project Group

Adopting Rust (Hosted by Lloyds bank)

2025-05-13 - 2025-05-17 | Utrecht, NL | Rust NL

RustWeek 2025

2025-05-14 | Reading, UK | Reading Rust Workshop

Reading Rust Meetup

2025-05-16 | Utrecht, NL | Rust NL Meetup Group

RustWeek Hackathon

2025-05-20 | Aarhus, DK | Rust Aarhus

Hack Night - Robot Edition

2025-05-20 | Leipzig, SN, DE | Rust - Modern Systems Programming in Leipzig

Topic TBD

North America

2025-04-23 | Austin, TX, US | Rust ATX

Rust Lunch - Fareground

2025-04-23 | Austin, TX, US | Rust ATX

Rust Lunch - Fareground 2025-04-23 | Spokane, WA, US | Spokane Rust

Community Show & Tell at Fuel Coworking

2025-04-24 | Atlanta, GA, US | Rust Atlanta

3rd 3RD TIME OMG YES!

2025-04-25 | Boston, MA, US | Boston Rust Meetup

Ball Square Rust Lunch, Apr 25

2025-05-01 | Saint Louis, MO, US | STL Rust

SIUE Capstone Project reflections on Rust

2025-05-03 | Boston, MA, US | Boston Rust Meetup

Boston Common Rust Lunch, May 3

2025-05-08 | México City, MX | Rust MX

Calculando con el compilador: Compiler time vs Run time. Introducción a uv

2025-05-08 | Portland, OR, US | PDXRust

Apache DataFusion: A Fast, Extensible, Modular Analytic Query Engine in Rust

2025-05-11 | Boston, MA, US | Boston Rust Meetup

Porter Square Rust Lunch, May 11 2025-05-15 | Nashville, TN, US | Music City Rust Developers

Using Rust For Web Series 2 : Why you, Yes You. Should use Hyperscript!

2025-05-15 | Redmond, WA, US | Seattle Rust User Group

May, 2025 SRUG (Seattle Rust User Group) Meetup

2025-05-20 | San Francisco, CA, US | San Francisco Rust Study Group

Rust Hacking in Person

South America

2025-05-28 | Montevideo, DE, UY | Rust Meetup Uruguay

Primera meetup de Rust en 2025!

If you are running a Rust event please add it to the calendar to get it mentioned here. Please remember to add a link to the event too. Email the Rust Community Team for access.

Jobs

Please see the latest Who's Hiring thread on r/rust

Quote of the Week

I don’t think about rust either. That’s a compiler’s job

– Steve Klabnik on Bluesky

Thanks to Matt Wismer for the suggestion!

Please submit quotes and vote for next week!

This Week in Rust is edited by: nellshamrell, llogiq, cdmistman, ericseppanen, extrawurst, U007D, joelmarcey, mariannegoldin, bennyvasquez, bdillo

Email list hosting is sponsored by The Rust Foundation

Discuss on r/rust

#rust-lang #rust #rustlang #twir #long post

1 note · View note

this-week-in-rust · 2 months ago

Text

This Week in Rust 595

This Week in Rust is openly developed on GitHub and archives can be viewed at this-week-in-rust.org. If you find any errors in this week’s issue, please submit a PR.

Want TWIR in your inbox? Subscribe here.

Updates from Rust Community

Official

March Project Goals Update

Newsletters

The Embedded Rustacean Issue #43

Project/Tooling Updates

Shadertoys ported to Rust GPU

Meilisearch 1.14 - composite embedders, embedding cache, granular filterable attributes, and batch document retrieval by ID

rust-query 0.4: structural types and other new features

Observations/Thoughts

Rebuilding Prime Video UI with Rust and WebAssembly

ALP Rust is faster than C++

what if the poison were rust?

A surprising enum size optimization in the Rust compiler

Two Years of Rust

An ECS lite architecture

A 2025 Survey of Rust GUI Libraries

BTrees, Inverted Indices, and a Model for Full Text Search

Cutting Down Rust Compile Times From 30 to 2 Minutes With One Thousand Crates

SIMD in zlib-rs (part 1): Autovectorization and target features

Avoiding memory fragmentation in Rust with jemalloc

[video] Bevy Basics: Who Observes the Observer

Rust Walkthroughs

Rust Type System Deep Dive From GATs to Type Erasure

Async from scratch 1: What’s in a Future, anyway? | natkr’s ramblings

Async from scratch 2: Wake me maybe | natkr’s ramblings

Building a search engine from scratch, in Rust: part 4

Pretty State Machine Patterns in Rust

[video] Build with Naz : Declarative macros in Rust

Miscellaneous

March 2025 Jobs Report

Rust resources

Crate of the Week

This week’s crate is wgpu, a cross-platform graphics and compute library based on WebGPU.

Despite a lack of suggestions, llogiq is pleased with his choice.

Please submit your suggestions and votes for next week!

Calls for Testing

An important step for RFC implementation is for people to experiment with the implementation and give feedback, especially before stabilization.

No calls for testing were issued this week by Rust, Rust language RFCs or Rustup.*

Let us know if you would like your feature to be tracked as a part of this list.

RFCs

Rust

Rustup

Call for Participation; projects and speakers

CFP - Projects

Always wanted to contribute to open-source projects but did not know where to start? Every week we highlight some tasks from the Rust community for you to pick and get started!

Some of these tasks may also have mentors available, visit the task page for more information.

rama - add serve command to rama-cli

rama - add support for include_dir for to ServeDir and related

rama - add curl module to rama-http-types

If you are a Rust project owner and are looking for contributors, please submit tasks here or through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

CFP - Events

Are you a new or experienced speaker looking for a place to share something cool? This section highlights events that are being planned and are accepting submissions to join their event as a speaker.

If you are an event organizer hoping to expand the reach of your event, please submit a link to the website through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

Updates from the Rust Project

480 pull requests were merged in the last week

Compiler

detect and provide suggestion for &raw EXPR

don’t suggest the use of impl Trait in closure parameter

make the compiler suggest actual paths instead of visible paths if the visible paths are through any doc hidden path

tell LLVM about impossible niche tags

remove Nonterminal and TokenKind::Interpolated

re-use Sized fast-path

Library

add core::intrinsics::simd::{simd_extract_dyn, simd_insert_dyn}

initial UnsafePinned implementation (Part 1: Libs)

polymorphize array::IntoIter’s iterator impl

speed up String::push and String::insert

std: add Output::exit_ok

Cargo

added symlink resolution for workspace-path-hash

improved error message when build-dir template var is invalid

Rustdoc

search: add unbox flag to Result aliases

enable Markdown extensions when looking for doctests

Clippy

arbitrary_source_item_ordering should ignore test modules

implicit_return: better handling of asynchronous code

accept self.cmp(other).into() as canonical PartialOrd impl

add manual_abs_diff lint

consecutive returns dont decrease cognitive Complexity level anymore

consider nested lifetimes in mut_from_ref

correctly handle bracketed type in default_constructed_unit_struct

deprecate match_on_vec_items lint

do not propose to auto-derive Clone in presence of unsafe fields

fix: iter_cloned_collect false positive with custom From/IntoIterator impl

fix: map_entry: don’t emit lint before checks have been performed

fix: redundant_clone false positive in overlapping lifetime

various fixes for manual_is_power_of_two

Rust-Analyzer

ast: return correct types for make::expr_* methods

add children modules feature

add normalizeDriveLetter

distribute x64 and aarch64 Linux builds with PGO optimizations

fix dyn compatibility code bypassing callable_item_signature query

fix a small bug with catastrophic effects

fix an incorrect ExpressionStore that was passed

prevent panics when there is a cyclic dependency between closures

shadow type by module

ignore errors from rustfmt which may trigger error notification

port closure inference from rustc

Rust Compiler Performance Triage

Relatively small changes this week, nothing terribly impactful (positive or negative).

Triage done by @simulacrum. Revision range: e643f59f..15f58c46

1 Regressions, 3 Improvements, 3 Mixed; 2 of them in rollups 35 artifact comparisons made in total

Full report here

Approved RFCs

Changes to Rust follow the Rust RFC (request for comments) process. These are the RFCs that were approved for implementation this week:

No RFCs were approved this week.

Final Comment Period

Every week, the team announces the ‘final comment period’ for RFCs and key PRs which are reaching a decision. Express your opinions now.

Tracking Issues & PRs

Rust

Split elided_lifetime_in_paths into tied and untied

check types of const param defaults

Stabilize flags for doctest cross compilation

Do not remove trivial SwitchInt in analysis MIR

Implement a lint for implicit autoref of raw pointer dereference - take 2

Implement Default for raw pointers

make abi_unsupported_vector_types a hard error

Stabilize let chains in the 2024 edition

Make closure capturing have consistent and correct behaviour around patterns

Stabilize the cell_update feature

Other Areas

*No Items entered Final Comment Period this week for Rust RFCs, Cargo, Language Team, Language Reference or Unsafe Code Guidelines.

Let us know if you would like your PRs, Tracking Issues or RFCs to be tracked as a part of this list.

New and Updated RFCs

No New or Updated RFCs were created this week.

Upcoming Events

Rusty Events between 2025-04-16 - 2025-05-14 🦀

Virtual

2025-04-16 | Virtual (Vancouver, BC, CA) | Vancouver Rust

Rust Study/Hack/Hang-out

2025-04-17 | Virtual and In-Person (Redmond, WA, US) | Seattle Rust User Group

April, 2025 SRUG (Seattle Rust User Group) Meetup

2025-04-22 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Fourth Tuesday

2025-04-23 | Virtual (Cardiff, UK) | Rust and C++ Cardiff

Beyond embedded - OS development in Rust

2025-04-24 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-04-24 | Virtual (Charlottesville, VA, US) | Charlottesville Rust Meetup

Part 2: Quantum Computers Can’t Rust-Proof This!“

2025-05-03 | Virtual (Kampala, UG) | Rust Circle Meetup

Rust Circle Meetup

2025-05-05 | Virtual (Tel Aviv-Yafo, IL) | Rust 🦀 TLV

Tauri: Cross-Platform desktop applications with Rust and web technologies

2025-05-07 | Virtual (Indianapolis, IN, US) | Indy Rust

Indy.rs - with Social Distancing

2025-05-08 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-05-13 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Second Tuesday

Asia

2025-04-22 | Tel Aviv-Yafo, IL | Rust 🦀 TLV

In person Rust April 2025 at Braavos in Tel Aviv in collaboration with StarkWare

Europe

2025-04-19 | Istanbul, TR | Türkiye Rust Community

Rust Konf Türkiye

2025-04-23 | London, UK | London Rust Project Group

Fusing Python with Rust using raw C bindings

2025-04-24 | Aarhus, DK | Rust Aarhus

Talk Night at MFT Energy

2025-04-24 | Edinburgh, UK | Rust and Friends

Rust and Friends (evening pub)

2025-04-24 | Manchester, UK | Rust Manchester

Rust Manchester April Code Night

2025-04-25 | Edinburgh, UK | Rust and Friends

Rust and Friends (daytime coffee)

2025-04-26 | Stockholm, SE | Stockholm Rust

Ferris’ Fika Forum #11

2025-04-29 | London, UK | Rust London User Group

LDN Talks April 2025 Community Showcase

2025-04-29 | Paris, FR | Rust Paris

Rust meetup #76

2025-04-30 | Frankfurt, DE | Rust Rhein-Main

Kubernetes Operator in Rust

2025-05-01 | Nürnberg, DE | Rust Nuremberg

Hackers Hike 0x0

2025-05-06 - 2025-05-07 | Paris, FR | WebAssembly and Rust Meetup

GOSIM AI Paris 2025

2025-05-06 | Paris, FR | WebAssembly and Rust Meetup (Wasm Empowering AI)

GOSIM AI Paris 2025 (Discount available)

2025-05-07 | Madrid, ES | MadRust

VII Lenguajes, VII Perspectivas, I Problema

2025-05-07 | Oxford, UK | Oxford Rust Meetup Group

Oxford Rust and C++ social

2025-05-08 | Gdansk, PL | Rust Gdansk

Rust Gdansk Meetup #8

2025-05-08 | London, UK | London Rust Project Group

Adopting Rust (Hosted by Lloyds bank)

2025-05-13 | Amsterdam, NL | RustNL

RustWeek 2025 announcement

2025-05-13 - 2025-05-17 | Utrecht, NL | Rust NL

RustWeek 2025

2025-05-14 | Reading, UK | Reading Rust Workshop

Reading Rust Meetup

North America

2025-04-17 | Mountain View, CA, US | Hacker Dojo

RUST MEETUP at HACKER DOJO

2025-04-17 | Nashville, TN, US | Music City Rust Developers

Using Rust For Web Series 1 : Why HTMX Is Bad

2025-04-17 | Redmond, WA, US | Seattle Rust User Group

April, 2025 SRUG (Seattle Rust User Group) Meetup

2025-04-22 | Detroit, MI, US | Detroit Rust

Rust Community Meet and Conference Report - Ann Arbor

2025-04-23 | Austin, TX, US | Rust ATX

Rust Lunch - Fareground

2025-04-23 | Austin, TX, US | Rust ATX

Rust Lunch - Fareground 2025-04-23 | Spokane, WA, US | Spokane Rust

Community Show & Tell at Fuel Coworking

2025-04-24 | Atlanta, GA, US | Rust Atlanta

3rd 3RD TIME OMG YES!

2025-04-25 | Boston, MA, US | Boston Rust Meetup

Ball Square Rust Lunch, Apr 25

2025-05-01 | Saint Louis, MO, US | STL Rust

SIUE Capstone Project reflections on Rust

2025-05-03 | Boston, MA, US | Boston Rust Meetup

Boston Common Rust Lunch, May 3

2025-05-08 | México City, MX | Rust MX

Calculando con el compilador: Compiler time vs Run time

2025-05-08 | Portland, OR, US | PDXRust

Apache DataFusion: A Fast, Extensible, Modular Analytic Query Engine in Rust

2025-05-11 | Boston, MA, US | Boston Rust Meetup

Porter Square Rust Lunch, May 11

Oceania

2025-04-22 | Barton, AC, AU | Canberra Rust User Group

April Meetup

If you are running a Rust event please add it to the calendar to get it mentioned here. Please remember to add a link to the event too. Email the Rust Community Team for access.

Jobs

Please see the latest Who’s Hiring thread on r/rust

Quote of the Week

IEEE 754 floating point, proudly providing counterexamples since 1985!

– Johannes Dahlström on rust-internals

Thanks to Ralf Jung for the suggestion!

Please submit quotes and vote for next week!

This Week in Rust is edited by: nellshamrell, llogiq, cdmistman, ericseppanen, extrawurst, U007D, joelmarcey, mariannegoldin, bennyvasquez, bdillo

Email list hosting is sponsored by The Rust Foundation

Discuss on r/rust

#rust-lang #rust #rustlang #twir #long post

5 notes · View notes

this-week-in-rust · 2 months ago

Text

This Week in Rust 595

This Week in Rust is openly developed on GitHub and archives can be viewed at this-week-in-rust.org. If you find any errors in this week's issue, please submit a PR.

Want TWIR in your inbox? Subscribe here.

Updates from Rust Community

Official

March Project Goals Update

Newsletters

The Embedded Rustacean Issue #43

Project/Tooling Updates

Shadertoys ported to Rust GPU

Meilisearch 1.14 - composite embedders, embedding cache, granular filterable attributes, and batch document retrieval by ID

rust-query 0.4: structural types and other new features

Observations/Thoughts

Rebuilding Prime Video UI with Rust and WebAssembly

ALP Rust is faster than C++

what if the poison were rust?

A surprising enum size optimization in the Rust compiler

Two Years of Rust

An ECS lite architecture

A 2025 Survey of Rust GUI Libraries

BTrees, Inverted Indices, and a Model for Full Text Search

Cutting Down Rust Compile Times From 30 to 2 Minutes With One Thousand Crates

SIMD in zlib-rs (part 1): Autovectorization and target features

Avoiding memory fragmentation in Rust with jemalloc

[video] Bevy Basics: Who Observes the Observer

Rust Walkthroughs

Rust Type System Deep Dive From GATs to Type Erasure

Async from scratch 1: What's in a Future, anyway? | natkr's ramblings

Async from scratch 2: Wake me maybe | natkr's ramblings

Building a search engine from scratch, in Rust: part 4

Pretty State Machine Patterns in Rust

[video] Build with Naz : Declarative macros in Rust

Miscellaneous

March 2025 Jobs Report

Rust resources

Crate of the Week

This week's crate is wgpu, a cross-platform graphics and compute library based on WebGPU.

Despite a lack of suggestions, llogiq is pleased with his choice.

Please submit your suggestions and votes for next week!

Calls for Testing

An important step for RFC implementation is for people to experiment with the implementation and give feedback, especially before stabilization.

No calls for testing were issued this week by Rust, Rust language RFCs or Rustup.*

Let us know if you would like your feature to be tracked as a part of this list.

RFCs

Rust

Rustup

Call for Participation; projects and speakers

CFP - Projects

Always wanted to contribute to open-source projects but did not know where to start? Every week we highlight some tasks from the Rust community for you to pick and get started!

Some of these tasks may also have mentors available, visit the task page for more information.

rama - add serve command to rama-cli

rama - add support for include_dir for to ServeDir and related

rama - add curl module to rama-http-types

If you are a Rust project owner and are looking for contributors, please submit tasks here or through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

CFP - Events

Are you a new or experienced speaker looking for a place to share something cool? This section highlights events that are being planned and are accepting submissions to join their event as a speaker.

If you are an event organizer hoping to expand the reach of your event, please submit a link to the website through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

Updates from the Rust Project

480 pull requests were merged in the last week

Compiler

detect and provide suggestion for &raw EXPR

don't suggest the use of impl Trait in closure parameter

make the compiler suggest actual paths instead of visible paths if the visible paths are through any doc hidden path

tell LLVM about impossible niche tags

remove Nonterminal and TokenKind::Interpolated

re-use Sized fast-path

Library

add core::intrinsics::simd::{simd_extract_dyn, simd_insert_dyn}

initial UnsafePinned implementation (Part 1: Libs)

polymorphize array::IntoIter's iterator impl

speed up String::push and String::insert

std: add Output::exit_ok

Cargo

added symlink resolution for workspace-path-hash

improved error message when build-dir template var is invalid

Rustdoc

search: add unbox flag to Result aliases

enable Markdown extensions when looking for doctests

Clippy

arbitrary_source_item_ordering should ignore test modules

implicit_return: better handling of asynchronous code

accept self.cmp(other).into() as canonical PartialOrd impl

add manual_abs_diff lint

consecutive returns dont decrease cognitive Complexity level anymore

consider nested lifetimes in mut_from_ref

correctly handle bracketed type in default_constructed_unit_struct

deprecate match_on_vec_items lint

do not propose to auto-derive Clone in presence of unsafe fields

fix: iter_cloned_collect false positive with custom From/IntoIterator impl

fix: map_entry: don't emit lint before checks have been performed

fix: redundant_clone false positive in overlapping lifetime

various fixes for manual_is_power_of_two

Rust-Analyzer

ast: return correct types for make::expr_* methods

add children modules feature

add normalizeDriveLetter

distribute x64 and aarch64 Linux builds with PGO optimizations

fix dyn compatibility code bypassing callable_item_signature query

fix a small bug with catastrophic effects

fix an incorrect ExpressionStore that was passed

prevent panics when there is a cyclic dependency between closures

shadow type by module

ignore errors from rustfmt which may trigger error notification

port closure inference from rustc

Rust Compiler Performance Triage

Relatively small changes this week, nothing terribly impactful (positive or negative).

Triage done by @simulacrum. Revision range: e643f59f..15f58c46

1 Regressions, 3 Improvements, 3 Mixed; 2 of them in rollups 35 artifact comparisons made in total

Full report here

Approved RFCs

Changes to Rust follow the Rust RFC (request for comments) process. These are the RFCs that were approved for implementation this week:

No RFCs were approved this week.

Final Comment Period

Every week, the team announces the 'final comment period' for RFCs and key PRs which are reaching a decision. Express your opinions now.

Tracking Issues & PRs

Rust

Split elided_lifetime_in_paths into tied and untied

check types of const param defaults

Stabilize flags for doctest cross compilation

Do not remove trivial SwitchInt in analysis MIR

Implement a lint for implicit autoref of raw pointer dereference - take 2

Implement Default for raw pointers

make abi_unsupported_vector_types a hard error

Stabilize let chains in the 2024 edition

Make closure capturing have consistent and correct behaviour around patterns

Stabilize the cell_update feature

Other Areas

*No Items entered Final Comment Period this week for Rust RFCs, Cargo, Language Team, Language Reference or Unsafe Code Guidelines.

Let us know if you would like your PRs, Tracking Issues or RFCs to be tracked as a part of this list.

New and Updated RFCs

No New or Updated RFCs were created this week.

Upcoming Events

Rusty Events between 2025-04-16 - 2025-05-14 🦀

Virtual

2025-04-16 | Virtual (Vancouver, BC, CA) | Vancouver Rust

Rust Study/Hack/Hang-out

2025-04-17 | Virtual and In-Person (Redmond, WA, US) | Seattle Rust User Group

April, 2025 SRUG (Seattle Rust User Group) Meetup

2025-04-22 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Fourth Tuesday

2025-04-23 | Virtual (Cardiff, UK) | Rust and C++ Cardiff

Beyond embedded - OS development in Rust

2025-04-24 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-04-24 | Virtual (Charlottesville, VA, US) | Charlottesville Rust Meetup

Part 2: Quantum Computers Can’t Rust-Proof This!"

2025-05-03 | Virtual (Kampala, UG) | Rust Circle Meetup

Rust Circle Meetup

2025-05-05 | Virtual (Tel Aviv-Yafo, IL) | Rust 🦀 TLV

Tauri: Cross-Platform desktop applications with Rust and web technologies

2025-05-07 | Virtual (Indianapolis, IN, US) | Indy Rust

Indy.rs - with Social Distancing

2025-05-08 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-05-13 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Second Tuesday

Asia

2025-04-22 | Tel Aviv-Yafo, IL | Rust 🦀 TLV

In person Rust April 2025 at Braavos in Tel Aviv in collaboration with StarkWare

Europe

2025-04-19 | Istanbul, TR | Türkiye Rust Community

Rust Konf Türkiye

2025-04-23 | London, UK | London Rust Project Group

Fusing Python with Rust using raw C bindings

2025-04-24 | Aarhus, DK | Rust Aarhus

Talk Night at MFT Energy

2025-04-24 | Edinburgh, UK | Rust and Friends

Rust and Friends (evening pub)

2025-04-24 | Manchester, UK | Rust Manchester

Rust Manchester April Code Night

2025-04-25 | Edinburgh, UK | Rust and Friends

Rust and Friends (daytime coffee)

2025-04-26 | Stockholm, SE | Stockholm Rust

Ferris' Fika Forum #11

2025-04-29 | London, UK | Rust London User Group

LDN Talks April 2025 Community Showcase

2025-04-29 | Paris, FR | Rust Paris

Rust meetup #76

2025-04-30 | Frankfurt, DE | Rust Rhein-Main

Kubernetes Operator in Rust

2025-05-01 | Nürnberg, DE | Rust Nuremberg

Hackers Hike 0x0

2025-05-06 - 2025-05-07 | Paris, FR | WebAssembly and Rust Meetup

GOSIM AI Paris 2025

2025-05-06 | Paris, FR | WebAssembly and Rust Meetup (Wasm Empowering AI)

GOSIM AI Paris 2025 (Discount available)

2025-05-07 | Madrid, ES | MadRust

VII Lenguajes, VII Perspectivas, I Problema

2025-05-07 | Oxford, UK | Oxford Rust Meetup Group

Oxford Rust and C++ social

2025-05-08 | Gdansk, PL | Rust Gdansk

Rust Gdansk Meetup #8

2025-05-08 | London, UK | London Rust Project Group

Adopting Rust (Hosted by Lloyds bank)

2025-05-13 | Amsterdam, NL | RustNL

RustWeek 2025 announcement

2025-05-13 - 2025-05-17 | Utrecht, NL | Rust NL

RustWeek 2025

2025-05-14 | Reading, UK | Reading Rust Workshop

Reading Rust Meetup

North America

2025-04-17 | Mountain View, CA, US | Hacker Dojo

RUST MEETUP at HACKER DOJO

2025-04-17 | Nashville, TN, US | Music City Rust Developers

Using Rust For Web Series 1 : Why HTMX Is Bad

2025-04-17 | Redmond, WA, US | Seattle Rust User Group

April, 2025 SRUG (Seattle Rust User Group) Meetup

2025-04-22 | Detroit, MI, US | Detroit Rust

Rust Community Meet and Conference Report - Ann Arbor

2025-04-23 | Austin, TX, US | Rust ATX

Rust Lunch - Fareground

2025-04-23 | Austin, TX, US | Rust ATX

Rust Lunch - Fareground 2025-04-23 | Spokane, WA, US | Spokane Rust

Community Show & Tell at Fuel Coworking

2025-04-24 | Atlanta, GA, US | Rust Atlanta

3rd 3RD TIME OMG YES!

2025-04-25 | Boston, MA, US | Boston Rust Meetup

Ball Square Rust Lunch, Apr 25

2025-05-01 | Saint Louis, MO, US | STL Rust

SIUE Capstone Project reflections on Rust

2025-05-03 | Boston, MA, US | Boston Rust Meetup

Boston Common Rust Lunch, May 3

2025-05-08 | México City, MX | Rust MX

Calculando con el compilador: Compiler time vs Run time

2025-05-08 | Portland, OR, US | PDXRust

Apache DataFusion: A Fast, Extensible, Modular Analytic Query Engine in Rust

2025-05-11 | Boston, MA, US | Boston Rust Meetup

Porter Square Rust Lunch, May 11

Oceania

2025-04-22 | Barton, AC, AU | Canberra Rust User Group

April Meetup

If you are running a Rust event please add it to the calendar to get it mentioned here. Please remember to add a link to the event too. Email the Rust Community Team for access.

Jobs

Please see the latest Who's Hiring thread on r/rust

Quote of the Week

IEEE 754 floating point, proudly providing counterexamples since 1985!

– Johannes Dahlström on rust-internals

Thanks to Ralf Jung for the suggestion!

Please submit quotes and vote for next week!

This Week in Rust is edited by: nellshamrell, llogiq, cdmistman, ericseppanen, extrawurst, U007D, joelmarcey, mariannegoldin, bennyvasquez, bdillo

Email list hosting is sponsored by The Rust Foundation

Discuss on r/rust

#rust-lang #rust #rustlang #twir #long post

5 notes · View notes

this-week-in-rust · 2 months ago

Text

This Week in Rust 594

This Week in Rust is openly developed on GitHub and archives can be viewed at this-week-in-rust.org. If you find any errors in this week’s issue, please submit a PR.

Want TWIR in your inbox? Subscribe here.

Updates from Rust Community

Official

Announcing Rust 1.86.0 | Rust Blog

Help us create a vision for Rust’s future

C ABI Changes for wasm32-unknown-unknown

March Project Goals Update

March 2025 Project Director Update

Newsletters

This Month in Rust OSDev: March 2025

Project/Tooling Updates

Graphite progress report (Q4 2024)

This Month in Redox - March 2025

zxc: A Terminal based mitm proxy written in rust with Tmux and Vim as user interface

rustc_codegen_gcc: Progress Report #35

Observations/Thoughts

Replicating state changes across language barriers with Rust, UniFFI, and proc macros

Deterministic simulation testing for async Rust

Thinking like a compiler: places and values in Rust

Things fall apart

Syntactic Musings on View Types

Rust Walkthroughs

Building a search engine from scratch, in Rust: part 3

Pitfalls of Safe Rust

How to implement cryptographically-secure API keys in Rust

Research

Garbage Collection for Rust: The Finalizer Frontier

Miscellaneous

Crate of the Week

This week’s crate is graft, a transactional storage engine optimized for lazy, partial, and strongly consistent replication.

Thanks to Carl Sverre for the self-suggestion!

Please submit your suggestions and votes for next week!

Calls for Testing

An important step for RFC implementation is for people to experiment with the implementation and give feedback, especially before stabilization.

No calls for testing were issued this week by Rust, Rust language RFCs or Rustup.

Let us know if you would like your feature to be tracked as a part of this list.

Call for Participation; projects and speakers

CFP - Projects

Always wanted to contribute to open-source projects but did not know where to start? Every week we highlight some tasks from the Rust community for you to pick and get started!

Some of these tasks may also have mentors available, visit the task page for more information.

No Calls for participation were submitted this week.

If you are a Rust project owner and are looking for contributors, please submit tasks here or through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

CFP - Events

Are you a new or experienced speaker looking for a place to share something cool? This section highlights events that are being planned and are accepting submissions to join their event as a speaker.

Rust Conf 2025 Call for Speakers | Closes 2025-04-29 11:59 PM PDT | Seattle, WA, US | 2025-09-02 - 2025-09-05

If you are an event organizer hoping to expand the reach of your event, please submit a link to the website through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

Updates from the Rust Project

451 pull requests were merged in the last week

Compiler

implement super let

hygiene: avoid recursion in syntax context decoding

misc query tweaks

folder experiment: Micro-optimize RegionEraserVisitor

folder experiment: Monomorphize region resolver

Library

add slice::align_to_uninit_mut

optimize slice {Chunks,Windows}::nth

Cargo

cargo: feat: print target and package names formatted as file hyperlinks

Rustfmt

rustfmt: add #![feature(ergonomic_clones)] formatting

rustfmt: add match_arm_indent option

rustfmt: extend cfg_if! support to cfg_match!

Clippy

clippy: fixes for missing_asserts_for_indexing

Rust-Analyzer

rust-analyzer: project-model: provide flag for no deps

rust-analyzer: auto-import: Prefer imports of matching types for argument lists

rust-analyzer: ide-assists: remove AssistKind::None

rust-analyzer: add more completion about “impl”

rust-analyzer: align usage of default and new with style guide

rust-analyzer: don’t drop references with more than one definition

rust-analyzer: fix color brackets in string context

rust-analyzer: fix format_args lowering for ≥1.87

rust-analyzer: fix a bug in MBE expansion that arose from incorrect fixing of an older bug in MBE

rust-analyzer: yet another false positive invalid cast diagnostic

Rust Compiler Performance Triage

A busy week with lots of performance improvements. The largest performance improvement was from a revert of a previous week’s regression just in time for the beta release. Another large improvement came to small tweaks in the query system showing that there still are opportunities for small, targeted performance improvements in the compiler.

Triage done by @rylev. Revision range: 2ea33b59..e643f59f

Summary:

(instructions:u) mean range count Regressions ❌ (primary) 0.8% [0.2%, 1.9%] 11 Regressions ❌ (secondary) 8.4% [0.2%, 38.5%] 16 Improvements ✅ (primary) -1.0% [-35.1%, -0.2%] 206 Improvements ✅ (secondary) -1.8% [-8.6%, -0.1%] 155 All ❌✅ (primary) -0.9% [-35.1%, 1.9%] 217

2 Regressions, 9 Improvements, 5 Mixed; 4 of them in rollups 48 artifact comparisons made in total

Full report here.

Approved RFCs

Changes to Rust follow the Rust RFC (request for comments) process. These are the RFCs that were approved for implementation this week:

No RFCs were approved this week.

Final Comment Period

Every week, the team announces the ‘final comment period’ for RFCs and key PRs which are reaching a decision. Express your opinions now.

Tracking Issues & PRs

Rust

f*::NAN: guarantee that this is a quiet NaN

Stabilize let chains in the 2024 edition

Stabilize the cell_update feature

Stabilize -Zdwarf-version as -Cdwarf-version

indirect-const-stabilize the exact_div intrinsic

Promise array::from_fn is generated in order of increasing indices

Other Areas

No Items entered Final Comment Period this week for Rust RFCs, Cargo, Language Team, Language Reference or Unsafe Code Guidelines.

Let us know if you would like your PRs, Tracking Issues or RFCs to be tracked as a part of this list.

New and Updated RFCs

No New or Updated RFCs were created this week.

Upcoming Events

Rusty Events between 2025-04-09 - 2025-05-07 🦀

Virtual

2025-04-10 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-04-15 | Virtual (Washington, DC, US) | Rust DC

Mid-month Rustful

2025-04-16 | Virtual (Vancouver, BC, CA) | Vancouver Rust

Rust Study/Hack/Hang-out

2025-04-17 | Virtual and In-Person (Redmond, WA, US) | Seattle Rust User Group

April, 2025 SRUG (Seattle Rust User Group) Meetup

2025-04-22 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Fourth Tuesday

2025-04-23 | Virtual (Cardiff, UK) | Rust and C++ Cardiff

Beyond embedded - OS development in Rust

2025-04-24 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-04-24 | Virtual (Charlottesville, VA, US) | Charlottesville Rust Meetup

Part 2: Quantum Computers Can’t Rust-Proof This!“

2025-05-03 | Virtual (Kampala, UG) | Rust Circle Meetup

Rust Circle Meetup

2025-05-05 | Virtual (Tel Aviv-Yafo, IL) | Rust 🦀 TLV

Tauri: Cross-Platform desktop applications with Rust and web technologies

2025-05-07 | Virtual (Indianapolis, IN, US) | Indy Rust

Indy.rs - with Social Distancing

Asia

2025-04-22 | Tel Aviv-Yafo, IL | Rust 🦀 TLV

In person Rust April 2025 at Braavos in Tel Aviv in collaboration with StarkWare

Europe

2025-04-09 | Girona, ES | Rust Girona

Rust Girona Hack & Learn 04 2025

2025-04-09 | Reading, UK | Reading Rust Workshop

Reading Rust Meetup

2025-04-10 | Karlsruhe, DE | Rust Hack & Learn Karlsruhe

Karlsruhe Rust Hack and Learn Meetup bei BlueYonder

2025-04-15 | Leipzig, DE | Rust - Modern Systems Programming in Leipzig

Topic TBD

2025-04-15 | London, UK | Women in Rust

WIR x WCC: Finding your voice in Tech

2025-04-19 | Istanbul, TR | Türkiye Rust Community

Rust Konf Türkiye

2025-04-23 | London, UK | London Rust Project Group

Fusing Python with Rust using raw C bindings

2025-04-24 | Aarhus, DK | Rust Aarhus

Talk Night at MFT Energy

2025-04-24 | Edinburgh, UK | Rust and Friends

Rust and Friends (evening pub)

2025-04-24 | Manchester, UK | Rust Manchester

Rust Manchester April Code Night

2025-04-25 | Edinburgh, UK | Rust and Friends

Rust and Friends (daytime coffee)

2025-04-26 | Stockholm, SE | Stockholm Rust

Ferris’ Fika Forum #11

2025-04-29 | Paris, FR | Rust Paris

Rust meetup #76

2025-04-30 | Frankfurt, DE | Rust Rhein-Main

Kubernetes Operator in Rust

2025-05-01 | Nürnberg, DE | Rust Nuremberg

Hackers Hike 0x0

2025-05-06 - 2025-05-07 | Paris, FR | WebAssembly and Rust Meetup

GOSIM AI Paris 2025

2025-05-07 | Madrid, ES | MadRust

VII Lenguajes, VII Perspectivas, I Problema

2025-05-07 | Oxford, UK | Oxford Rust Meetup Group

Oxford Rust and C++ social

North America

2025-04-09 | Austin, TX, US | Rust ATX

Rust ATX at Arm

2025-04-10 | Portland, OR, US | PDXRust

TetaNES: A Vaccination for Rust—No Needle, Just the Borrow Checker

2025-04-14 | Boston, MA, US | Boston Rust Meetup

Coolidge Corner Brookline Rust Lunch, Apr 14

2025-04-15 | San Francisco, CA, US | San Francisco Rust Study Group

Rust Hacking in Person

2025-04-17 | Mountain View, CA, US | Hacker Dojo

RUST MEETUP at HACKER DOJO

2025-04-17 | Nashville, TN, US | Music City Rust Developers

Using Rust For Web Series 1 : Why HTMX Is Bad

2025-04-17 | Redmond, WA, US | Seattle Rust User Group

April, 2025 SRUG (Seattle Rust User Group) Meetup

2025-04-23 | Austin, TX, US | Rust ATX

Rust Lunch - Fareground

2025-04-23 | Austin, TX, US | Rust ATX

Rust Lunch - Fareground

2025-04-24 | Atlanta, GA, US | Rust Atlanta

3rd 3RD TIME OMG YES!

2025-04-25 | Boston, MA, US | Boston Rust Meetup

Ball Square Rust Lunch, Apr 25

2025-05-01 | Saint Louis, MO, US | STL Rust

SIUE Capstone Project reflections on Rust

2025-05-03 | Boston, MA, US | Boston Rust Meetup

Boston Common Rust Lunch, May 3

Oceania

2025-04-09 | Sydney, NS, AU | Rust Sydney

Crab 🦀 X 🕳️🐇

2025-04-14 | Christchurch, NZ | Christchurch Rust Meetup Group

Christchurch Rust Meetup

2025-04-22 | Barton, AC, AU | Canberra Rust User Group

April Meetup

If you are running a Rust event please add it to the calendar to get it mentioned here. Please remember to add a link to the event too. Email the Rust Community Team for access.

Jobs

Please see the latest Who’s Hiring thread on r/rust

Quote of the Week

The moment I froze Doctest with a loop in a comment.

– /u/HaMMeReD describing their first Rust Whoa! moment on /r/rust

Despite a lack of suggestions, llogiq is content with his choice.

Please submit quotes and vote for next week!

This Week in Rust is edited by: nellshamrell, llogiq, cdmistman, ericseppanen, extrawurst, U007D, joelmarcey, mariannegoldin, bennyvasquez, bdillo

Email list hosting is sponsored by The Rust Foundation

Discuss on r/rust

#rust-lang #rust #rustlang #twir #long post

1 note · View note

this-week-in-rust · 2 months ago

Text

This Week in Rust 594

This Week in Rust is openly developed on GitHub and archives can be viewed at this-week-in-rust.org. If you find any errors in this week's issue, please submit a PR.

Want TWIR in your inbox? Subscribe here.

Updates from Rust Community

Official

Announcing Rust 1.86.0 | Rust Blog

Help us create a vision for Rust's future

C ABI Changes for wasm32-unknown-unknown

March Project Goals Update

March 2025 Project Director Update

Newsletters

This Month in Rust OSDev: March 2025

Project/Tooling Updates

Graphite progress report (Q4 2024)

This Month in Redox - March 2025

zxc: A Terminal based mitm proxy written in rust with Tmux and Vim as user interface

rustc_codegen_gcc: Progress Report #35

Observations/Thoughts

Replicating state changes across language barriers with Rust, UniFFI, and proc macros

Deterministic simulation testing for async Rust

Thinking like a compiler: places and values in Rust

Things fall apart

Syntactic Musings on View Types

Rust Walkthroughs

Building a search engine from scratch, in Rust: part 3

Pitfalls of Safe Rust

How to implement cryptographically-secure API keys in Rust

Research

Garbage Collection for Rust: The Finalizer Frontier

Miscellaneous

Crate of the Week

This week's crate is graft, a transactional storage engine optimized for lazy, partial, and strongly consistent replication.

Thanks to Carl Sverre for the self-suggestion!

Please submit your suggestions and votes for next week!

Calls for Testing

An important step for RFC implementation is for people to experiment with the implementation and give feedback, especially before stabilization.

No calls for testing were issued this week by Rust, Rust language RFCs or Rustup.

Let us know if you would like your feature to be tracked as a part of this list.

Call for Participation; projects and speakers

CFP - Projects

Always wanted to contribute to open-source projects but did not know where to start? Every week we highlight some tasks from the Rust community for you to pick and get started!

Some of these tasks may also have mentors available, visit the task page for more information.

No Calls for participation were submitted this week.

If you are a Rust project owner and are looking for contributors, please submit tasks here or through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

CFP - Events

Are you a new or experienced speaker looking for a place to share something cool? This section highlights events that are being planned and are accepting submissions to join their event as a speaker.

Rust Conf 2025 Call for Speakers | Closes 2025-04-29 11:59 PM PDT | Seattle, WA, US | 2025-09-02 - 2025-09-05

If you are an event organizer hoping to expand the reach of your event, please submit a link to the website through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

Updates from the Rust Project

451 pull requests were merged in the last week

Compiler

implement super let

hygiene: avoid recursion in syntax context decoding

misc query tweaks

folder experiment: Micro-optimize RegionEraserVisitor

folder experiment: Monomorphize region resolver

Library

add slice::align_to_uninit_mut

optimize slice {Chunks,Windows}::nth

Cargo

cargo: feat: print target and package names formatted as file hyperlinks

Rustfmt

rustfmt: add #![feature(ergonomic_clones)] formatting

rustfmt: add match_arm_indent option

rustfmt: extend cfg_if! support to cfg_match!

Clippy

clippy: fixes for missing_asserts_for_indexing

Rust-Analyzer

rust-analyzer: project-model: provide flag for no deps

rust-analyzer: auto-import: Prefer imports of matching types for argument lists

rust-analyzer: ide-assists: remove AssistKind::None

rust-analyzer: add more completion about "impl"

rust-analyzer: align usage of default and new with style guide

rust-analyzer: don't drop references with more than one definition

rust-analyzer: fix color brackets in string context

rust-analyzer: fix format_args lowering for ≥1.87

rust-analyzer: fix a bug in MBE expansion that arose from incorrect fixing of an older bug in MBE

rust-analyzer: yet another false positive invalid cast diagnostic

Rust Compiler Performance Triage

A busy week with lots of performance improvements. The largest performance improvement was from a revert of a previous week's regression just in time for the beta release. Another large improvement came to small tweaks in the query system showing that there still are opportunities for small, targeted performance improvements in the compiler.

Triage done by @rylev. Revision range: 2ea33b59..e643f59f

Summary:

2 Regressions, 9 Improvements, 5 Mixed; 4 of them in rollups 48 artifact comparisons made in total

Full report here.

Approved RFCs

Changes to Rust follow the Rust RFC (request for comments) process. These are the RFCs that were approved for implementation this week:

No RFCs were approved this week.

Final Comment Period

Every week, the team announces the 'final comment period' for RFCs and key PRs which are reaching a decision. Express your opinions now.

Tracking Issues & PRs

Rust

f*::NAN: guarantee that this is a quiet NaN

Stabilize let chains in the 2024 edition

Stabilize the cell_update feature

Stabilize -Zdwarf-version as -Cdwarf-version

indirect-const-stabilize the exact_div intrinsic

Promise array::from_fn is generated in order of increasing indices

Other Areas

No Items entered Final Comment Period this week for Rust RFCs, Cargo, Language Team, Language Reference or Unsafe Code Guidelines.

Let us know if you would like your PRs, Tracking Issues or RFCs to be tracked as a part of this list.

New and Updated RFCs

No New or Updated RFCs were created this week.

Upcoming Events

Rusty Events between 2025-04-09 - 2025-05-07 🦀

Virtual

2025-04-10 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-04-15 | Virtual (Washington, DC, US) | Rust DC

Mid-month Rustful

2025-04-16 | Virtual (Vancouver, BC, CA) | Vancouver Rust

Rust Study/Hack/Hang-out

2025-04-17 | Virtual and In-Person (Redmond, WA, US) | Seattle Rust User Group

April, 2025 SRUG (Seattle Rust User Group) Meetup

2025-04-22 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Fourth Tuesday

2025-04-23 | Virtual (Cardiff, UK) | Rust and C++ Cardiff

Beyond embedded - OS development in Rust

2025-04-24 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-04-24 | Virtual (Charlottesville, VA, US) | Charlottesville Rust Meetup

Part 2: Quantum Computers Can’t Rust-Proof This!"

2025-05-03 | Virtual (Kampala, UG) | Rust Circle Meetup

Rust Circle Meetup

2025-05-05 | Virtual (Tel Aviv-Yafo, IL) | Rust 🦀 TLV

Tauri: Cross-Platform desktop applications with Rust and web technologies

2025-05-07 | Virtual (Indianapolis, IN, US) | Indy Rust

Indy.rs - with Social Distancing

Asia

2025-04-22 | Tel Aviv-Yafo, IL | Rust 🦀 TLV

In person Rust April 2025 at Braavos in Tel Aviv in collaboration with StarkWare

Europe

2025-04-09 | Girona, ES | Rust Girona

Rust Girona Hack & Learn 04 2025

2025-04-09 | Reading, UK | Reading Rust Workshop

Reading Rust Meetup

2025-04-10 | Karlsruhe, DE | Rust Hack & Learn Karlsruhe

Karlsruhe Rust Hack and Learn Meetup bei BlueYonder

2025-04-15 | Leipzig, DE | Rust - Modern Systems Programming in Leipzig

Topic TBD

2025-04-15 | London, UK | Women in Rust

WIR x WCC: Finding your voice in Tech

2025-04-19 | Istanbul, TR | Türkiye Rust Community

Rust Konf Türkiye

2025-04-23 | London, UK | London Rust Project Group

Fusing Python with Rust using raw C bindings

2025-04-24 | Aarhus, DK | Rust Aarhus

Talk Night at MFT Energy

2025-04-24 | Edinburgh, UK | Rust and Friends

Rust and Friends (evening pub)

2025-04-24 | Manchester, UK | Rust Manchester

Rust Manchester April Code Night

2025-04-25 | Edinburgh, UK | Rust and Friends

Rust and Friends (daytime coffee)

2025-04-26 | Stockholm, SE | Stockholm Rust

Ferris' Fika Forum #11

2025-04-29 | Paris, FR | Rust Paris

Rust meetup #76

2025-04-30 | Frankfurt, DE | Rust Rhein-Main

Kubernetes Operator in Rust

2025-05-01 | Nürnberg, DE | Rust Nuremberg

Hackers Hike 0x0

2025-05-06 - 2025-05-07 | Paris, FR | WebAssembly and Rust Meetup

GOSIM AI Paris 2025

2025-05-07 | Madrid, ES | MadRust

VII Lenguajes, VII Perspectivas, I Problema

2025-05-07 | Oxford, UK | Oxford Rust Meetup Group

Oxford Rust and C++ social

North America

2025-04-09 | Austin, TX, US | Rust ATX

Rust ATX at Arm

2025-04-10 | Portland, OR, US | PDXRust

TetaNES: A Vaccination for Rust—No Needle, Just the Borrow Checker

2025-04-14 | Boston, MA, US | Boston Rust Meetup

Coolidge Corner Brookline Rust Lunch, Apr 14

2025-04-15 | San Francisco, CA, US | San Francisco Rust Study Group

Rust Hacking in Person

2025-04-17 | Mountain View, CA, US | Hacker Dojo

RUST MEETUP at HACKER DOJO

2025-04-17 | Nashville, TN, US | Music City Rust Developers

Using Rust For Web Series 1 : Why HTMX Is Bad

2025-04-17 | Redmond, WA, US | Seattle Rust User Group

April, 2025 SRUG (Seattle Rust User Group) Meetup

2025-04-23 | Austin, TX, US | Rust ATX

Rust Lunch - Fareground

2025-04-23 | Austin, TX, US | Rust ATX

Rust Lunch - Fareground

2025-04-24 | Atlanta, GA, US | Rust Atlanta

3rd 3RD TIME OMG YES!

2025-04-25 | Boston, MA, US | Boston Rust Meetup

Ball Square Rust Lunch, Apr 25

2025-05-01 | Saint Louis, MO, US | STL Rust

SIUE Capstone Project reflections on Rust

2025-05-03 | Boston, MA, US | Boston Rust Meetup

Boston Common Rust Lunch, May 3

Oceania

2025-04-09 | Sydney, NS, AU | Rust Sydney

Crab 🦀 X 🕳️🐇

2025-04-14 | Christchurch, NZ | Christchurch Rust Meetup Group

Christchurch Rust Meetup

2025-04-22 | Barton, AC, AU | Canberra Rust User Group

April Meetup

If you are running a Rust event please add it to the calendar to get it mentioned here. Please remember to add a link to the event too. Email the Rust Community Team for access.

Jobs

Please see the latest Who's Hiring thread on r/rust

Quote of the Week

The moment I froze Doctest with a loop in a comment.

– /u/HaMMeReD describing their first Rust Whoa! moment on /r/rust

Despite a lack of suggestions, llogiq is content with his choice.

Please submit quotes and vote for next week!

This Week in Rust is edited by: nellshamrell, llogiq, cdmistman, ericseppanen, extrawurst, U007D, joelmarcey, mariannegoldin, bennyvasquez, bdillo

Email list hosting is sponsored by The Rust Foundation

Discuss on r/rust

#rust-lang #rust #rustlang #twir #long post

1 note · View note

this-week-in-rust · 2 months ago

Text

This Week in Rust 593

Hello and welcome to another issue of This Week in Rust! Rust is a programming language empowering everyone to build reliable and efficient software. This is a weekly summary of its progress and community. Want something mentioned? Tag us at @ThisWeekInRust on X (formerly Twitter) or @ThisWeekinRust on mastodon.social, or send us a pull request. Want to get involved? We love contributions.

This Week in Rust is openly developed on GitHub and archives can be viewed at this-week-in-rust.org. If you find any errors in this week’s issue, please submit a PR.

Want TWIR in your inbox? Subscribe here.

Updates from Rust Community

Newsletters

The Embedded Rustacean Issue #42

This Week in Bevy - 2025-03-31

Project/Tooling Updates

Fjall 2.8

EtherCrab, the pure Rust EtherCAT MainDevice, version 0.6 released

A process for handling Rust code in the core kernel

api-version: axum middleware for header based version selection

SALT: a VS Code Extension, seeking participants in a study on Rust usabilty

Observations/Thoughts

Introducing Stringleton

Rust Any Part 3: Finally we have Upcasts

Towards fearless SIMD, 7 years later

LLDB’s TypeSystems: An Unfinished Interface

Mutation Testing in Rust

Embedding shared objects in Rust

Rust Walkthroughs

Architecting and building medium-sized web services in Rust with Axum, SQLx and PostgreSQL

Solving the ABA Problem in Rust with Hazard Pointers

Building a CoAP application on Ariel OS

How to Optimize your Rust Program for Slowness: Write a Short Program That Finishes After the Universe Dies

Inside ScyllaDB Rust Driver 1.0: A Fully Async Shard-Aware CQL Driver Using Tokio

Building a search engine from scratch, in Rust: part 2

Introduction to Monoio: A High-Performance Rust Runtime

Getting started with Rust on Google Cloud

Miscellaneous

An AlphaStation’s SROM

Real-World Verification of Software for Cryptographic Applications

Public mdBooks

[video] Networking in Bevy with ECS replication - Hennadii

[video] Intermediate Representations for Reactive Structures - Pete

Crate of the Week

This week’s crate is candystore, a fast, persistent key-value store that does not require LSM or WALs.

Thanks to Tomer Filiba for the self-suggestion!

Please submit your suggestions and votes for next week!

Calls for Testing

An important step for RFC implementation is for people to experiment with the implementation and give feedback, especially before stabilization.

No calls for testing were issued this week by Rust, Rust language RFCs or Rustup.

Let us know if you would like your feature to be tracked as a part of this list.

Call for Participation; projects and speakers

CFP - Projects

Always wanted to contribute to open-source projects but did not know where to start? Every week we highlight some tasks from the Rust community for you to pick and get started!

Some of these tasks may also have mentors available, visit the task page for more information.

If you are a Rust project owner and are looking for contributors, please submit tasks here or through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

CFP - Events

Are you a new or experienced speaker looking for a place to share something cool? This section highlights events that are being planned and are accepting submissions to join their event as a speaker.

* Rust Conf 2025 Call for Speakers | Closes 2025-04-29 11:59 PM PDT | Seattle, WA, US | 2025-09-02 - 2025-09-05

If you are an event organizer hoping to expand the reach of your event, please submit a link to the website through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

Updates from the Rust Project

438 pull requests were merged in the last week

Compiler

allow defining opaques in statics and consts

avoid wrapping constant allocations in packed structs when not necessary

perform less decoding if it has the same syntax context

stabilize precise_capturing_in_traits

uplift clippy::invalid_null_ptr_usage lint as invalid_null_arguments

Library

allow spawning threads after TLS destruction

override PartialOrd methods for bool

simplify expansion for format_args!()

stabilize const_cell

Rustdoc

greatly simplify doctest parsing and information extraction

rearrange Item/ItemInner

Clippy

new lint: char_indices_as_byte_indices

add manual_dangling_ptr lint

respect #[expect] and #[allow] within function bodies for missing_panics_doc

do not make incomplete or invalid suggestions

do not warn about shadowing in a destructuring assigment

expand obfuscated_if_else to support {then(), then_some()}.unwrap_or_default()

fix the primary span of redundant_pub_crate when flagging nameless items

fix option_if_let_else suggestion when coercion requires explicit cast

fix unnested_or_patterns suggestion in let

make collapsible_if recognize the let_chains feature

make missing_const_for_fn operate on non-optimized MIR

more natural suggestions for cmp_owned

collapsible_if: prevent including preceeding whitespaces if line contains non blanks

properly handle expansion in single_match

validate paths in disallowed_* configurations

Rust-Analyzer

allow crate authors to control completion of their things

avoid relying on block_def_map() needlessly

fix debug sourceFileMap when using cppvsdbg

fix format_args lowering using wrong integer suffix

fix a bug in orphan rules calculation

fix panic in progress due to splitting unicode incorrectly

use medium durability for crate-graph changes, high for library source files

Rust Compiler Performance Triage

Positive week, with a lot of primary improvements and just a few secondary regressions. Single big regression got reverted.

Triage done by @panstromek. Revision range: 4510e86a..2ea33b59

Summary:

(instructions:u) mean range count Regressions ❌ (primary) - - 0 Regressions ❌ (secondary) 0.9% [0.2%, 1.5%] 17 Improvements ✅ (primary) -0.4% [-4.5%, -0.1%] 136 Improvements ✅ (secondary) -0.6% [-3.2%, -0.1%] 59 All ❌✅ (primary) -0.4% [-4.5%, -0.1%] 136

Full report here.

Approved RFCs

Changes to Rust follow the Rust RFC (request for comments) process. These are the RFCs that were approved for implementation this week:

No RFCs were approved this week.

Final Comment Period

Every week, the team announces the ‘final comment period’ for RFCs and key PRs which are reaching a decision. Express your opinions now.

Tracking Issues & PRs

Rust

Tracking Issue for slice::array_chunks

Stabilize cfg_boolean_literals

Promise array::from_fn is generated in order of increasing indices

Stabilize repr128

Stabilize naked_functions

Fix missing const for inherent pointer replace methods

Rust RFCs

core::marker::NoCell in bounds (previously known an [sic] Freeze)

Cargo,

Stabilize automatic garbage collection.

Other Areas

No Items entered Final Comment Period this week for Language Team, Language Reference or Unsafe Code Guidelines.

Let us know if you would like your PRs, Tracking Issues or RFCs to be tracked as a part of this list.

New and Updated RFCs

Allow &&, ||, and ! in cfg

Upcoming Events

Rusty Events between 2025-04-02 - 2025-04-30 🦀

Virtual

2025-04-02 | Virtual (Indianapolis, IN, US) | Indy Rust

Indy.rs - with Social Distancing

2025-04-03 | Virtual (Nürnberg, DE) | Rust Nurnberg DE

Rust Nürnberg online

2025-04-03 | Virtual | Ardan Labs

Communicate with Channels in Rust

2025-04-05 | Virtual (Kampala, UG) | Rust Circle Meetup

Rust Circle Meetup

2025-04-08 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Second Tuesday

2025-04-10 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-04-15 | Virtual (Washington, DC, US) | Rust DC

Mid-month Rustful

2025-04-16 | Virtual (Vancouver, BC, CA) | Vancouver Rust

Rust Study/Hack/Hang-out

2025-04-17 | Virtual and In-Person (Redmond, WA, US) | Seattle Rust User Group

April, 2025 SRUG (Seattle Rust User Group) Meetup

2025-04-22 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Fourth Tuesday

2025-04-23 | Virtual (Cardiff, UK) | Rust and C++ Cardiff

**Beyond embedded - OS development in Rust **

2025-04-24 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-04-24 | Virtual (Charlottesville, VA, US) | Charlottesville Rust Meetup

Part 2: Quantum Computers Can’t Rust-Proof This!“

Asia

2025-04-05 | Bangalore/Bengaluru, IN | Rust Bangalore

April 2025 Rustacean meetup

2025-04-22 | Tel Aviv-Yafo, IL | Rust 🦀 TLV

In person Rust April 2025 at Braavos in Tel Aviv in collaboration with StarkWare

Europe

2025-04-02 | Cambridge, UK | Cambridge Rust Meetup

Monthly Rust Meetup

2025-04-02 | Köln, DE | Rust Cologne

Rust in April: Rust Embedded, Show and Tell

2025-04-02 | München, DE | Rust Munich

Rust Munich 2025 / 1 - hybrid

2025-04-02 | Oxford, UK | Oxford Rust Meetup Group

Oxford Rust and C++ social

2025-04-02 | Stockholm, SE | Stockholm Rust

Rust Meetup @Funnel

2025-04-03 | Oslo, NO | Rust Oslo

Rust Hack'n'Learn at Kampen Bistro

2025-04-08 | Olomouc, CZ | Rust Moravia

3. Rust Moravia Meetup (Real Embedded Rust)

2025-04-09 | Girona, ES | Rust Girona

Rust Girona Hack & Learn 04 2025

2025-04-09 | Reading, UK | Reading Rust Workshop

Reading Rust Meetup

2025-04-10 | Karlsruhe, DE | Rust Hack & Learn Karlsruhe

Karlsruhe Rust Hack and Learn Meetup bei BlueYonder

2025-04-15 | Leipzig, DE | Rust - Modern Systems Programming in Leipzig

Topic TBD

2025-04-15 | London, UK | Women in Rust

WIR x WCC: Finding your voice in Tech

2025-04-19 | Istanbul, TR | Türkiye Rust Community

Rust Konf Türkiye

2025-04-23 | London, UK | London Rust Project Group

Fusing Python with Rust using raw C bindings

2025-04-24 | Aarhus, DK | Rust Aarhus

Talk Night at MFT Energy

2025-04-24 | Edinburgh, UK | Rust and Friends

Rust and Friends (evening pub)

2025-04-24 | Manchester, UK | Rust Manchester

Rust Manchester April Code Night

2025-04-25 | Edinburgh, UK | Rust and Friends

Rust and Friends (daytime coffee)

2025-04-29 | Paris, FR | Rust Paris

Rust meetup #76

North America

2025-04-03 | Chicago, IL, US | Chicago Rust Meetup

Rust Happy Hour

2025-04-03 | Montréal, QC, CA | Rust Montréal

April Monthly Social

2025-04-03 | Saint Louis, MO, US | STL Rust

icu4x - resource-constrained internationalization (i18n)

2025-04-06 | Boston, MA, US | Boston Rust Meetup

Kendall Rust Lunch, Apr 6

2025-04-08 | New York, NY, US | Rust NYC

Rust NYC: Building a full-text search Postgres extension in Rust

2025-04-10 | Portland, OR, US | PDXRust

TetaNES: A Vaccination for Rust—No Needle, Just the Borrow Checker

2025-04-14 | Boston, MA, US | Boston Rust Meetup

Coolidge Corner Brookline Rust Lunch, Apr 14

2025-04-17 | Nashville, TN, US | Music City Rust Developers

Using Rust For Web Series 1 : Why HTMX Is Bad

2025-04-17 | Redmond, WA, US | Seattle Rust User Group

April, 2025 SRUG (Seattle Rust User Group) Meetup

2025-04-23 | Austin, TX, US | Rust ATX

Rust Lunch - Fareground

2025-04-25 | Boston, MA, US | Boston Rust Meetup

Ball Square Rust Lunch, Apr 25

Oceania

2025-04-09 | Sydney, NS, AU | Rust Sydney

Crab 🦀 X 🕳️🐇

2025-04-14 | Christchurch, NZ | Christchurch Rust Meetup Group

Christchurch Rust Meetup

2025-04-22 | Barton, AC, AU | Canberra Rust User Group

April Meetup

South America

2025-04-03 | Buenos Aires, AR | Rust en Español

Abril - Lambdas y más!

If you are running a Rust event please add it to the calendar to get it mentioned here. Please remember to add a link to the event too. Email the Rust Community Team for access.

Jobs

Please see the latest Who’s Hiring thread on r/rust

Quote of the Week

If you write a bug in your Rust program, Rust doesn’t blame you. Rust asks “how could the compiler have spotted that bug”.

– Ian Jackson blogging about Rust

Despite a lack of suggestions, llogiq is quite pleased with his choice.

Please submit quotes and vote for next week!

This Week in Rust is edited by: nellshamrell, llogiq, cdmistman, ericseppanen, extrawurst, U007D, joelmarcey, mariannegoldin, bennyvasquez, bdillo

Email list hosting is sponsored by The Rust Foundation

Discuss on r/rust

#rust-lang #rust #rustlang #twir #long post

2 notes · View notes