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.

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Updates from Rust Community

Official

Newsletters

Project/Tooling Updates

Observations/Thoughts

Rust Walkthroughs

Research

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.

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.

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.

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

Library

Cargo

Rustfmt

Clippy

Rust-Analyzer

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

Other Areas

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

Asia

Europe

North America

Oceania

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

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