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 pci-driver, a crate to develop user-space PCI(e) linux drivers.

Thanks to Alberto Faria 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

388 pull requests were merged in the last week

Rust Compiler Performance Triage

Overall, a fairly quiet week where the change to primary benchmarks ended up breaking exactly even. Secondary benchmarks saw improvements but not in large enough numbers for it to be particularly noteworthy.

Triage done by @rylev. Revision range: 02cd79a..1e926f0


(instructions:u) mean range count
Regressions ❌
0.8% [0.2%, 1.4%] 19
Regressions ❌
1.0% [0.3%, 1.8%] 9
Improvements ✅
-0.6% [-1.8%, -0.3%] 29
Improvements ✅
-1.0% [-6.4%, -0.2%] 39
All ❌✅ (primary) -0.0% [-1.8%, 1.4%] 48

3 Regressions, 1 Improvements, 6 Mixed; 4 of them in rollups 41 artifact comparisons made in total

Full report here

Call for Testing

An important step for RFC implementation is for people to experiment with the implementation and give feedback, especially before stabilization. The following RFCs would benefit from user testing before moving forward:

  • No RFCs issued a call for testing this week.

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.

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

Rusty Events between 2022-10-12 - 2022-11-09 🦀



North America


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.


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

Quote of the Week

There's a lot of weird debate about whether Rust in the kernel is useful or not... in my experience, it's way more useful than I could've ever imagined!

I went from 1st render to a stable desktop that can run run games, browsers, etc. in about two days of work on my driver (!!!)

All the concurrency bugs just vanish with Rust! Memory gets freed when it needs to be freed! Once you learn to make Rust work with you, I feel like it guides you into writing correct code, even beyond the language's safety promises. It's seriously magic! ✨

There is absolutely no way I wouldn't have run into race conditions, UAFs, memory leaks, and all kinds of badness if I'd been writing this in C.

In Rust? Just some logic bugs and some core memory management issues. Once those were fixed, the rest of the driver just worked!!

Asahi Lina on twitter

llogiq is mightily pleased with his 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, bennyvasquez.

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