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? Tweet us at @ThisWeekInRust or send us a pull request. Want to get involved? We love contributions.

This Week in Rust is openly developed on GitHub. If you find any errors in this week's issue, please submit a PR.

Updates from Rust Community


Project/Tooling Updates


Rust Walkthroughs


Crate of the Week

This week's crate is shuttle, a rustic declarative deployment solution for and at your service.

Thanks to Nodar Daneliya for the self-suggestion!

Please submit your suggestions and votes for next week!

Call for Participation

Always wanted to contribute to open-source projects but didn't 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.

Updates from the Rust Project

343 pull requests were merged in the last week

Rust Compiler Performance Triage

Performance overall improved in the last week, but some of this is due to fixing regressions from prior weeks. This week also brings an average of 4% improvement in memory usage across all profiles due to #95171 bumping the LLVM/clang used on x86_64-unknown-linux-gnu to compile C and C++ code linked into rustc.

Triage done by @simulacrum. Revision range: 1c988cfa..468492


Regressions 😿
Regressions 😿
Improvements 🎉
Improvements 🎉
All 😿 🎉
count 13 1 78 29 91
mean 0.8% 0.3% -0.9% -0.8% -0.7%
max 1.5% 0.3% -2.7% -2.1% -2.7%

4 Regressions, 3 Improvements, 1 Mixed; 1 of them in rollups

52 artifact comparisons made in total

See the full report for more.

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.


  • No RFCs entered Final Comment Period this week.

Tracking Issues & PRs

New and Updated RFCs

Upcoming Events

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Rust Jobs









Rust Foundation

Tempus Ex

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Quote of the Week

"Ah but logic errors can happen with all languages" yes and I'm sure trains occasionally run into trees as well, but cars are way more likely to. 🙃

amos on twitter

Thanks to Jacques “erelde” Rimbault for the suggestion!

Please submit quotes and vote for next week!

This Week in Rust is edited by: nellshamrell, llogiq, cdmistman, ericseppanen, extrawurst, andrewpollack, U007D, kolharsam, joelmarcey, mariannegoldin.

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