This Week in Rust

This Week in Rust 666

2026-08-26T00:00:00-04:00

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

Project/Tooling Updates

Intent to Ship: JPEG XL – Mozilla Hacks - the Web developer blog

Observations/Thoughts

Rust Walkthroughs

Miscellaneous

JetBrains Partners with the Rust Foundation for an AI Livestream

Crate of the Week

This week's crate is swift-topomap, a microarchitectural observability tool.

Thanks to Ankur Rathore 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.

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.

Rust

Tracking Issue for --remap-path-scope in rustdoc

Cargo

Tracking Issue for -Zembed-metadata

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

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 Bluesky 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 Bluesky or Mastodon!

Updates from the Rust Project

593 pull requests were merged in the last week

Compiler

Library

Cargo

Rustdoc

Rustfmt

Clippy

Rust-Analyzer

Rust Compiler Performance Triage

A busy week, with a continued stream of improvements to the next trait solver and next borrow check implementations. Other than those changes, the week was pretty quiet for performance.

Triage done by @simulacrum. Revision range: 8fa1c96c..9a4ad59a

2 Regressions, 4 Improvements, 2 Mixed; 2 of them in rollups. 28 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

Leadership Council

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

Upcoming Events

Rusty Events between 2026-08-26 - 2026-09-23 🦀

Virtual

2026-08-26 | Virtual (Cardiff, UK) | Rust and C++ Cardiff
- Operating Systems Book Club: Lottery and Multi-CPU Scheduling
2026-08-27 | Virtual (Berlin, DE) | Rust Berlin
- Rust Hack and Learn
2026-08-28 | Virtual | Rust Girona
- Sessió setmanal de codificació / Weekly coding session
2026-08-31 | Virtual | Rust 🦀 Maven
- Workshop: Add tests to an open source Rust project
2026-09-01 | Virtual | Rust 🦀 Maven
- Tauri: Cross-Platform desktop applications with Rust and web technologies
2026-09-02 | Virtual (Indianapolis, IN, US) | Indy Rust
- Indy.rs - with Social Distancing
2026-09-02 | Virtual (Indianapolis, IN, US) | Indy Rust
- Indy.rs - with Social Distancing
2026-09-04 | Virtual | Rust Girona
- Sessió setmanal de codificació / Weekly coding session
2026-09-06 | Virtual | Rust 🦀 Maven
- Facts: Curated Knowledge for Humans and Agents
2026-09-06 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup
- Rust Deep Learning: First Sunday
2026-09-08 - 2026-09-11 | Hybrid (Montreal, CA) | RustConf 2026
- RustConf 2026
2026-09-08 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup
- Second Tuesday
2026-09-08 | Virtual (London, UK) | Women in Rust
- 👋 Community Catch Up
2026-09-10 | Virtual | Rust 🦀 Maven
- Solving Real-World Planning Problems in Rust with SolverForge
2026-09-10 | Virtual (Berlin, DE) | Rust Berlin
- Rust Hack and Learn
2026-09-10 | Virtual (Nürnberg, DE) | Rust Nuremberg
- Rust Nürnberg online
2026-09-15 | Virtual (Washington, DC, US) | Rust DC
- Mid-month Rustful
2026-09-16 | Hybrid (Vancouver, CA) | Vancouver Rust
- Rust Study/Hack/Hang-out
2026-09-17 | Hybrid (Seattle, WA, US) | Seattle Rust User Group
- September, 2026 SRUG (Seattle Rust User Group) Meetup
2026-09-18 | Virtual | Rust Girona
- Sessió setmanal de codificació / Weekly coding session
2026-09-20 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup
- Rust Deep Learning: Third Sunday
2026-09-22 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup
- Fourth Tuesday Rust Bookclub

Africa

2026-09-08 | Johannesburg, ZA | Johannesburg Rust Meetup
- Rust's extended standard library

Asia

2026-08-29 | Pune, IN | Rust Pune
- Rust Pune Meetup: August 2026

Europe

2026-08-26 | Copenhagen, DK | Copenhagen Rust Community
- Rust meetup #71 Sponsored by Factbird
2026-08-26 | Dresden, DE | Rust Dresden
- Third Meetup
2026-08-27 | London, UK | Rust London User Group
- LDN Talks August Community Showcase
2026-08-27 | Manchester, UK | Rust Manchester
- Rust Manchester August Talks
2026-08-29 | Stockholm, SE | Stockholm Rust
- Ferris' Fika Forum #29
2026-09-08 | Paris, FR | Rust Paris
- Rust meetup #87
2026-09-14 - 2026-09-16 | Berlin, DE | Oxidize 2026
- Oxidize 2026
2026-09-15 | Leipzig, DE | Rust - Modern Systems Programming in Leipzig
- Reproducing scientific papers - with Rust & "AI"
2026-09-22 | Prague, CZ | Rust Prague
- Rust Meetup Prague @ Rockwell Automation

North America

2026-08-26 | Austin, TX, US | Rust ATX
- Rust Lunch - Fareground
2026-08-26 | Los Angeles, CA, US | Rust Los Angeles
- Rust LA August! Rust in Quantum Computing
2026-08-27 | Atlanta, GA, US | Rust Atlanta
- Rust-Atl
2026-09-03 | Mountain View, CA, US | Hacker Dojo
- RUST MEETUP at HACKER DOJO
2026-09-03 | Saint Louis, MO, US | STL Rust
- Cryptography + Quantum Computers
2026-09-08 - 2026-09-11 | Hybrid (Montreal, CA) | RustConf 2026
- RustConf 2026
2026-09-09 | Montreal, CA | Women in Rust
- RustConf Coffee Break Meetup
2026-09-10 | Lehi, UT, US | Utah Rust
- Hands-on Embedded Rust
2026-09-10 | San Diego, CA, US | San Diego Rust
- San Diego Rust September Meetup - Back in person!
2026-09-15 | San Francisco, CA, US | San Francisco Rust Study Group
- Rust Hacking in Person
2026-09-16 | Hybrid (Vancouver, CA) | Vancouver Rust
- Rust Study/Hack/Hang-out
2026-09-17 | Hybrid (Seattle, WA, US) | Seattle Rust User Group
- September, 2026 SRUG (Seattle Rust User Group) Meetup
2026-09-17 | Mountain View, CA, US | Hacker Dojo
- RUST MEETUP at HACKER DOJO
2026-09-23 | Austin, TX, US | Rust ATX
- Rust Lunch - Fareground

Oceania

2026-08-27 | Melbourne, AU | Rust Melbourne
- Rust Melbourne August 2026

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 care about this community, including its human and social nature. I want others to appreciate those qualities, and I don't want to see them compromised and replaced by excessive machine-generated content.

– Quine Dot on rust-users

Thanks to Jonas Fassbender for the suggestion!

Please submit quotes and vote for next week!

This Week in Rust is edited by:

Email list hosting is sponsored by The Rust Foundation

Discuss on r/rust

This Week in Rust 665

2026-08-19T00:00:00-04:00

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

Experiment in reducing target directory size on nightly

Newsletters

The Embedded Rustacean Issue #78

Project/Tooling Updates

Observations/Thoughts

Rust Walkthroughs

Research

GPU Offload in Rust: Portable, Safe, and Fast

Miscellaneous

Zerocopy with Joshua Liebow-Feeser

Crate of the Week

This week's crate is tokio_with_wasm, a crate that lets a single tokio codebase run both natively and in web browsers.

Thanks to Kim Dong-Hyun 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.

Cargo

Tracking Issue for -Zembed-metadata

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

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 Bluesky 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 Bluesky or Mastodon!

Updates from the Rust Project

613 pull requests were merged in the last week

Compiler

Library

Cargo

Rustdoc

Clippy

Rust-Analyzer

Rust Compiler Performance Triage

There were almost no regressions this week, while the next trait solver saw several significant performance improvements!

Triage done by @kobzol. Revision range: 771916f9..8fa1c96c

Summary:

(instructions:u)	mean	range	count
Regressions ❌ (primary)	0.4%	[0.2%, 0.5%]	6
Regressions ❌ (secondary)	0.6%	[0.2%, 1.0%]	17
Improvements ✅ (primary)	-0.5%	[-1.7%, -0.2%]	166
Improvements ✅ (secondary)	-2.3%	[-16.0%, -0.1%]	219
All ❌✅ (primary)	-0.5%	[-1.7%, 0.5%]	172

0 Regressions, 6 Improvements, 7 Mixed; 4 of them in rollups 50 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:

RFC: Refactor the libs team

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

Cargo

Compiler Team (MCPs only)

Expose target_abi = "v8plus" on sparc-unknown-linux-gnu

No Items entered Final Comment Period this week for Rust RFCs, Language Team, Language Reference, Leadership Council 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

This RFC will appear in the Call for Testing section of the next issue (#) of This Week in Rust (TWiR). You may remove the call-for-testing label. Please feel free to leave the call-for-testing label in place if you would like this RFC to appear again in another issue of TWiR.

Upcoming Events

Rusty Events between 2026-08-19 - 2026-09-16 🦀

Virtual

2026-08-19 | Hybrid (Vancouver, CA) | Vancouver Rust
- Dealing with Dependencies
2026-08-20 | Hybrid (Seattle, WA, US) | Seattle Rust User Group
- August, 2026 SRUG (Seattle Rust User Group) Meetup
2026-08-20 | Virtual (Charlottesville, VA, US) | Charlottesville Rust Meetup
- Tock OS Part #5 — Wireless Communication with the IEEE 802.15.4 protocol
2026-08-21 | Virtual | Rust Girona
- Sessió setmanal de codificació / Weekly coding session
2026-08-25 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup
- Fourth Tuesday
2026-08-26 | Virtual (Cardiff, UK) | Rust and C++ Cardiff
- Operating Systems Book Club: Lottery and Multi-CPU Scheduling
2026-08-27 | Virtual (Berlin, DE) | Rust Berlin
- Rust Hack and Learn
2026-08-28 | Virtual | Rust Girona
- Sessió setmanal de codificació / Weekly coding session
2026-08-31 | Virtual | Rust 🦀 Maven
- Workshop: Add tests to an open source Rust project
2026-09-01 | Virtual | Rust 🦀 Maven
- Tauri: Cross-Platform desktop applications with Rust and web technologies
2026-09-02 | Virtual (Indianapolis, IN, US) | Indy Rust
- Indy.rs - with Social Distancing
2026-09-02 | Virtual (Indianapolis, IN, US) | Indy Rust
- Indy.rs - with Social Distancing
2026-09-04 | Virtual | Rust Girona
- Sessió setmanal de codificació / Weekly coding session
2026-09-06 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup
- Rust Deep Learning: First Sunday
2026-09-08 - 2026-09-11 | Hybrid (Montreal, CA) | RustConf 2026
- RustConf 2026
2026-09-08 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup
- Second Tuesday
2026-09-08 | Virtual (London, UK) | Women in Rust
- 👋 Community Catch Up
2026-09-10 | Virtual | Rust 🦀 Maven
- Solving Real-World Planning Problems in Rust with SolverForge
2026-09-10 | Virtual (Berlin, DE) | Rust Berlin
- Rust Hack and Learn
2026-09-10 | Virtual (Nürnberg, DE) | Rust Nuremberg
- Rust Nürnberg online
2026-09-15 | Virtual (Washington, DC, US) | Rust DC
- Mid-month Rustful
2026-09-16 | Hybrid (Vancouver, CA) | Vancouver Rust
- Rust Study/Hack/Hang-out

Africa

2026-09-08 | Johannesburg, ZA | Johannesburg Rust Meetup
- Rust's extended standard library

Asia

2026-08-22 | Bangalore, IN | Rust Bangalore
- August 2026 Rustacean Meetup
2026-08-22 | Delhi, IN | Rust Delhi
- Rust Delhi X SciPy India Meetup
2026-08-22 | Noida, IN | SciPy India
- Scientific Computing in Rust and Python
2026-08-29 | Pune, IN | Rust Pune
- Rust Pune Meetup: August 2026

Europe

2026-08-20 | Berlin, DE | Rust Berlin
- Rust Summer Party!
2026-08-20 | Frankfurt, DE | Rust Rhein-Main
- Building an acoustic camera with egui and embassy
2026-08-21 | Edinburgh, UK | Rust and Friends
- Rust and Friends (daytime coffee)
2026-08-26 | Dresden, DE | Rust Dresden
- Third Meetup
2026-08-27 | Manchester, UK | Rust Manchester
- Rust Manchester August Talks
2026-08-29 | Stockholm, SE | Stockholm Rust
- Ferris' Fika Forum #29
2026-09-08 | Paris, FR | Rust Paris
- Rust meetup #87
2026-09-14 - 2026-09-16 | Berlin, DE | Oxidize 2026
- Oxidize 2026
2026-09-15 | Leipzig, DE | Rust - Modern Systems Programming in Leipzig
- Reproducing scientific papers - with Rust & "AI"

North America

2026-08-19 | Hybrid (Vancouver, CA) | Vancouver Rust
- Dealing with Dependencies
2026-08-19 | San Francisco, CA, US | Bay Area Rust
- Bay Area Rust August Meetup
2026-08-20 | Hybrid (Seattle, WA, US) | Seattle Rust User Group
- August, 2026 SRUG (Seattle Rust User Group) Meetup
2026-08-20 | Mountain View, CA, US | Hacker Dojo
- RUST MEETUP at HACKER DOJO
2026-08-20 | New York, NY, US | Rust NYC
- Rust NYC: 'Data Shapes Your Memory' and 'Rust in Peace'
2026-08-26 | Austin, TX, US | Rust ATX
- Rust Lunch - Fareground
2026-08-26 | Los Angeles, CA, US | Rust Los Angeles
- Rust LA August! Rust in Quantum Computing
2026-08-27 | Atlanta, GA, US | Rust Atlanta
- Rust-Atl
2026-09-03 | Mountain View, CA, US | Hacker Dojo
- RUST MEETUP at HACKER DOJO
2026-09-03 | Saint Louis, MO, US | STL Rust
- Cryptography + Quantum Computers
2026-09-08 - 2026-09-11 | Hybrid (Montreal, CA) | RustConf
- RustConf
2026-09-08 | Montreal, QC, CA | Rust Foundation
- Rust Teams Health Summit
2026-09-08 - 2026-09-11 | Montreal, QC, CA | RustConf 2026
- RustConf 2026, Hosted by the Rust Foundation
2026-09-09 | Montreal, CA | Women in Rust
- RustConf Coffee Break Meetup
2026-09-10 | San Diego, CA, US | San Diego Rust
- San Diego Rust September Meetup - Back in person!
2026-09-15 | San Francisco, CA, US | San Francisco Rust Study Group
- Rust Hacking in Person
2026-09-16 | Hybrid (Vancouver, CA) | Vancouver Rust
- Rust Study/Hack/Hang-out

Oceania

2026-08-27 | Melbourne, AU | Rust Melbourne
- Rust Melbourne August 2026
2026-08-27 | Melbourne, AU | Rust Melbourne
- Rust Melbourne 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

ass-bind is peak

– Clar Fon on rust-zulip discussion "assumptions on binders" abbreviations

Thanks to Theemathas for the suggestion!

Please submit quotes and vote for next week!

This Week in Rust is edited by:

Email list hosting is sponsored by The Rust Foundation

Discuss on r/rust

This Week in Rust 664

2026-08-12T00:00:00-04:00

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

Call for testing: Restricting trait implementability and field mutability

Foundation

Newsletters

This Month in Rust OSDev: July 2026

Project/Tooling Updates

We are making changes to the Project/Tooling Updates Section - see here for more details

Observations/Thoughts

Rust Walkthroughs

Research

Rust Coreutils: Rebuilding Unix Foundations in a Modern Language

Miscellaneous

Crate of the Week

This week's crate is literator, a crate for efficiently displaying the items of an iterator without temporary allocations.

Thanks to Nora 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, Cargo, Rustup or Rust language RFCs.

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 Bluesky 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 Bluesky or Mastodon!

Updates from the Rust Project

698 pull requests were merged in the last week

Compiler

Library

Cargo

Rustdoc

Clippy

Rust-Analyzer

Rust Compiler Performance Triage

This week so many new performance improvements landed that we needed to roll 10 of them up together to keep the bors queue manageable, great work! Also new is the LLVM 23 update which caused massive compile-time, run-time, bootstrap time and artifact size improvements. These improvements are reduced by the merge of Polonius Alpha on nightly causing a 3.0% regression. There still seems to be some potential to mitigate this regression.

Triage done by @JonathanBrouwer. Revision range: 65dd30fb..771916f9

Summary:

(instructions:u)	mean	range	count
Regressions ❌ (primary)	4.6%	[0.2%, 12.8%]	24
Regressions ❌ (secondary)	4.3%	[0.2%, 14.3%]	30
Improvements ✅ (primary)	-3.3%	[-16.4%, -0.2%]	251
Improvements ✅ (secondary)	-5.2%	[-34.8%, -0.2%]	308
All ❌✅ (primary)	-2.6%	[-16.4%, 12.8%]	275

1 Regression, 4 Improvements, 7 Mixed; 5 of them in rollups 25 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:

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

Compiler Team (MCPs only)

Leadership Council

No Items entered Final Comment Period this week for Rust RFCs, Language Reference, Cargo, 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: Support External Linkers

Upcoming Events

Rusty Events between 2026-08-12 - 2026-09-09 🦀

Virtual

2026-08-13 | Virtual (Berlin, DE) | Rust Berlin
- Rust Hack and Learn
2026-08-13 | Virtual (Nürnberg, DE) | Rust Nuremberg
- Rust Nürnberg online
2026-08-14 | Virtual (Girona, ES) | Rust Girona
- Sessió setmanal de codificació / Weekly coding session
2026-08-16 | Virtual (Bangalore, IN) | Embedded Rust
- Silicon Sundays #2
2026-08-18 | Virtual (Washington, DC, US) | Rust DC
- Mid-month Rustful
2026-08-19 | Hybrid (Vancouver, BC, CA) | Vancouver Rust
- Dealing with Dependencies
2026-08-20 | Hybrid (Seattle, WA, US) | Seattle Rust User Group
- August, 2026 SRUG (Seattle Rust User Group) Meetup
2026-08-20 | Virtual (Charlottesville, VA, US) | Charlottesville Rust Meetup
- Tock OS Part #5 — Wireless Communication with the IEEE 802.15.4 protocol
2026-08-21 | Virtual (Girona, ES) | Rust Girona
- Sessió setmanal de codificació / Weekly coding session
2026-08-25 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup
- Fourth Tuesday
2026-08-27 | Virtual (Berlin, DE) | Rust Berlin
- Rust Hack and Learn
2026-08-28 | Virtual (Girona, ES) | Rust Girona
- Sessió setmanal de codificació / Weekly coding session
2026-08-31 | Virtual (Global) | Rust Maven
- Workshop: Add tests to an open source Rust project
2026-09-01 | Virtual (Global) | Rust Maven
- Tauri: Cross-Platform desktop applications with Rust and web technologies
2026-09-02 | Virtual (Indianapolis, IN, US) | Indy Rust
- Indy.rs - with Social Distancing
2026-09-04 | Virtual (Girona, ES) | Rust Girona
- Sessió setmanal de codificació / Weekly coding session
2026-09-08 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup
- Second Tuesday
2026-09-08 | Virtual (London, UK) | Women in Rust
- 👋 Community Catch Up

Africa

2026-09-08 | Johannesburg, ZA | Johannesburg Rust Meetup
- Rust's extended standard library

Asia

2026-08-22 | Bangalore, IN | Rust Bangalore
- August 2026 Rustacean Meetup
2026-08-22 | Delhi, IN | Rust Delhi
- Rust Delhi X SciPy India Meetup
2026-08-22 | Noida, IN | SciPy India
- Scientific Computing in Rust and Python
2026-08-29 | Pune, IN | Rust Pune
- Rust Pune Meetup: August 2026

Europe

2026-08-13 | Switzerland, CH | PostTenebrasLab
- Rust Meetup Geneva
2026-08-18 | Aarhus, DK | Rust Aarhus
- Hack Night: Trust but verify the LLM
2026-08-18 | Leipzig, DE | Rust - Modern Systems Programming in Leipzig
- Topic TBD
2026-08-20 | Frankfurt, DE | Rust Rhein-Main
- Building an acoustic camera with egui and embassy
2026-08-27 | Manchester, UK | Rust Manchester
- Rust Manchester August Talks

North America

2026-08-13 | Lehi, UT, US | Utah Rust
- Utah Rust August Meetup
2026-08-13 | San Diego, CA, US | San Diego Rust
- San Diego Rust August Meetup - Back in person!
2026-08-15 | San Francisco, CA, US | Flower
- BOG-A-THON 3
2026-08-18 | San Francisco, CA, US | San Francisco Rust Study Group
- Rust Hacking in Person
2026-08-19 | Hybrid (Vancouver, BC, CA) | Vancouver Rust
- Dealing with Dependencies
2026-08-19 | San Francisco, CA, US | Bay Area Rust
- Bay Area Rust August Meetup
2026-08-20 | Mountain View, CA, US | Hacker Dojo
- RUST MEETUP at HACKER DOJO
2026-08-20 | New York, NY, US | Rust NYC
- Rust NYC: 'Data Shapes Your Memory' and 'Rust in Peace'
2026-08-20 | Hybrid (Seattle, WA, US) | Seattle Rust User Group
- August, 2026 SRUG (Seattle Rust User Group) Meetup
2026-08-26 | Austin, TX, US | Rust ATX
- Rust Lunch - Fareground
2026-08-26 | Los Angeles, CA, US | Rust Los Angeles
- Rust LA August! Rust in Quantum Computing
2026-08-27 | Atlanta, GA, US | Rust Atlanta
- Rust-Atl
2026-09-03 | Saint Louis, MO, US | STL Rust
- Cryptography + Quantum Computers
2026-09-08 | Montreal, QC, CA | Rust Foundation
- Rust Teams Health Summit
2026-09-08 - 2026-09-11 | Montreal, QC, CA | RustConf 2026
- RustConf 2026, Hosted by the Rust Foundation
2026-09-09 | Montreal, QC, CA | Women in Rust
- RustConf Coffee Break Meetup

Oceania

2026-08-27 | Melbourne, AU | Rust Melbourne
- Rust Melbourne 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 AI discussion was already put to bed as off topic and derailing. Do not summon the Mods so carelessly, as they are wroth, and filled with cruel vengeance.

– Simon Buchan on rust-users

Thanks to Jonas Fassbender for the suggestion!

Please submit quotes and vote for next week!

This Week in Rust is edited by:

Email list hosting is sponsored by The Rust Foundation

Discuss on r/rust

This Week in Rust 663

2026-08-05T00:00:00-04:00

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.

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Updates from Rust Community

Official

Newsletters

The Embedded Rustacean Issue #77

Project/Tooling Updates

Observations/Thoughts

Rust Walkthroughs

Crate of the Week

This week's crate is index_type, a crate for providing strongly typed indices for collections.

Thanks to Roee Shoshani 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, Cargo, Rustup or Rust language RFCs.

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 Bluesky 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 Bluesky or Mastodon!

Updates from the Rust Project

630 pull requests were merged in the last week

Compiler

Library

Cargo

Rustdoc

Rustfmt

format cfg_select!

Clippy

Rust-Analyzer

Rust Compiler Performance Triage

A lot of optimizations landed this week. Some big improvements to rustdoc in #159854, one big improvement in control flow graph traversal for cranelift-codegen, few more improvements to next-solver benchmarks and various other micro-optimizations, bringing the total to a nice round number of 10 improvements this week.

Triage done by @panstromek. Revision range: ad0c9dce..65dd30fb

Summary:

(instructions:u)	mean	range	count
Regressions ❌ (primary)	0.3%	[0.2%, 0.5%]	18
Regressions ❌ (secondary)	2.1%	[0.1%, 16.8%]	64
Improvements ✅ (primary)	-3.3%	[-39.8%, -0.2%]	97
Improvements ✅ (secondary)	-6.1%	[-39.6%, -0.1%]	111
All ❌✅ (primary)	-2.7%	[-39.8%, 0.5%]	115

1 Regression, 5 Improvements, 11 Mixed; 6 of them in rollups 32 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.

No Items entered Final Comment Period this week for Rust RFCs,Language Reference, Cargo, Language Team, Leadership Council 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 2026-08-05 - 2026-09-02 🦀

Virtual

2026-08-05 | Virtual (Cardiff, UK) | Rust and C++ Cardiff
- Operating Systems Book Club: Execution and Scheduling
2026-08-05 | Virtual (Indianapolis, IN, US) | Indy Rust
- Indy.rs - with Social Distancing
2026-08-07 | Virtual (Girona, ES) | Rust Girona
- Sessió setmanal de codificació / Weekly coding session
2026-08-10 | Hybrid (Kuala Lumpur, Malaysia) | Rust Malaysia Meetup
- Rust Meetup August 2026
2026-08-11 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup
- Second Tuesday
2026-08-13 | Virtual (Berlin, DE) | Rust Berlin
- Rust Hack and Learn
2026-08-13 | Virtual (Nürnberg, DE) | Rust Nuremberg
- Rust Nürnberg online
2026-08-14 | Virtual (Girona, ES) | Rust Girona
- Sessió setmanal de codificació / Weekly coding session
2026-08-18 | Virtual (Washington, DC, US) | Rust DC
- Mid-month Rustful
2026-08-19 | Hybrid (Vancouver, BC, CA) | Vancouver Rust
- Dealing with Dependencies
2026-08-20 | Hybrid (Seattle, WA, US) | Seattle Rust User Group
- August, 2026 SRUG (Seattle Rust User Group) Meetup
2026-08-20 | Virtual (Charlottesville, VA, US) | Charlottesville Rust Meetup
- Tock OS Part #5 — Wireless Communication with the IEEE 802.15.4 protocol
2026-08-21 | Virtual (Girona, ES) | Rust Girona
- Sessió setmanal de codificació / Weekly coding session
2026-08-25 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup
- Fourth Tuesday
2026-08-27 | Virtual (Berlin, DE) | Rust Berlin
- Rust Hack and Learn
2026-08-21 | Virtual (Girona, ES) | Rust Girona
- Sessió setmanal de codificació / Weekly coding session
2026-09-02 | Virtual (Indianapolis, IN, US) | Indy Rust
- Indy.rs - with Social Distancing

Africa

2026-08-11 | Johannesburg, ZA | Johannesburg Rust Meetup
- Rust's extended standard library

Asia

2026-08-10 | Hybrid (Kuala Lumpur, MY) | Rust Malaysia Meetup
- Rust Meetup August 2026
2026-08-22 | Bangalore, IN | Rust Bangalore
- August 2026 Rustacean Meetup
2026-08-22 | Delhi, IN | Rust Delhi
- Rust Delhi X SciPy India Meetup
2026-08-22 | Noida, IN | SciPy India
- Scientific Computing in Rust and Python
2026-08-29 | Pune, IN | Rust Pune
- Rust Pune Meetup: August 2026

Europe

2026-08-05 | Köln, DE | Rust Cologne
- Rust in August: Don't panic! …or_else?
2026-08-06 | Berlin, DE | Rust Berlin
- Rust Berlin on location 🏳️‍🌈 - Edition 016
2026-08-06 | Oxford, UK | Oxford ACCU/Rust Meetup.
- ACCU/Rust Summer social
2026-08-13 | Switzerland, CH | PostTenebrasLab
- Rust Meetup Geneva
2026-08-18 | Aarhus, DK | Rust Aarhus
- Hack Night: Trust but verify the LLM
2026-08-18 | Leipzig, DE | Rust - Modern Systems Programming in Leipzig
- Topic TBD
2026-08-20 | Frankfurt, DE | Rust Rhein-Main
- Building an acoustic camera with egui and embassy
2026-08-27 | Manchester, GB | Rust Manchester
- Rust Manchester August Talks

North America

2026-08-06 | Mountain View, CA, US | Hacker Dojo
- RUST MEETUP at HACKER DOJO
2026-08-06 | Saint Louis, MO, US | STL Rust
- Shipping Temporal: How a Global Rust Ecosystem Built Chrome’s Newest Web API
2026-08-11 | New York, NY, US | Rust NYC
- Rust NYC: 'An intro to wgpu' and 'Let's Talk Generics!'
2026-08-13 | Lehi, UT, US | Utah Rust
- Utah Rust August Meetup
2026-08-13 | San Diego, CA, US | San Diego Rust
- San Diego Rust August Meetup - Back in person!
2026-08-15 | San Francisco, CA, US | Flower
- BOG-A-THON 3
2026-08-18 | San Francisco, CA, US | San Francisco Rust Study Group
- Rust Hacking in Person
2026-08-19 | Hybrid (Vancouver, BC, CA) | Vancouver Rust
- Dealing with Dependencies
2026-08-19 | San Francisco, CA, US | Bay Area Rust
- Bay Area Rust August Meetup
2026-08-20 | Hybrid (Seattle, WA, US) | Seattle Rust User Group
- August, 2026 SRUG (Seattle Rust User Group) Meetup
2026-08-26 | Austin, TX, US | Rust ATX
- Rust Lunch - Fareground
2026-08-26 | Los Angeles, CA, US | Rust Los Angeles
- Rust LA August! Rust in Quantum Computing
2026-08-27 | Atlanta, GA, US | Rust Atlanta
- Rust-Atl

Oceania

2026-08-27 | Melbourne, AU | Rust Melbourne
- Rust Melbourne Meetup

South America

2026-08-08 | São Paulo, SP | Rust-SP
- Rust SP - Aug/2026

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

… but I gave up on the idea as the macro rules were turning into a turing complete rust syntax parser

– Koosha on rust-users

Thanks to miro for the suggestion!

Please submit quotes and vote for next week!

This Week in Rust is edited by:

Email list hosting is sponsored by The Rust Foundation

Discuss on r/rust