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 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.

This week's crate is RustQuant, a crate for quantitative finance.

Thanks to avhz 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 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.

Updates from the Rust Project

342 pull requests were merged in the last week

Rust Compiler Performance Triage

A pretty quiet week, with relatively few statistically significant changes, though some good improvements to a number of benchmarks, particularly in cycle counts rather than instructions.

Triage done by @simulacrum. Revision range: 7e0261e7ea..af78bae

3 Regressions, 3 Improvements, 2 Mixed; 2 of them in rollups

56 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.

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.

Upcoming Events

Rusty Events between 2023-09-20 - 2023-10-18 🦀

Virtual

2023-09-20 | Virtual (Cardiff, UK)| Rust and C++ Cardiff
- SurrealDB for Rustaceans
2023-09-20 | Virtual (Vancouver, BC, CA) | Vancouver Rust
- Nightly Night: Generators
2023-09-21 | Virtual (Charlottesville, NC, US) | Charlottesville Rust Meetup
- Crafting Interpreters in Rust Collaboratively
2023-09-21 | Virtual (Cologne, DE) | Cologne AWS User Group #AWSUGCGN
- AWS User Group Cologne - September Edition: Stefan Willenbrock: Developer Preview: Discovering Rust on AWS
2023-09-21 | Virtual (Linz, AT) | Rust Linz
- Rust Meetup Linz - 33rd Edition
2023-09-21 | Virtual (Stuttgart, DE) | Rust Community Stuttgart
- Rust-Meetup
2023-09-25 | Virtual (Dublin, IE) | Rust Dublin
- How we built the SurrealDB Python client in Rust.
2023-09-26 | Virtual (Berlin, DE) | OpenTechSchool Berlin
- Rust Hack and Learn | Mirror
2023-09-26 | Virtual (Dallas, TX, US) | Dallas Rust
- Last Tuesday
2023-09-26 | Virtual (Melbourne, VIC, AU) | Rust Melbourne
- (Hybrid - online & in person) September 2023 Rust Melbourne Meetup
2023-10-03 | Virtual (Buffalo, NY, US) | Buffalo Rust Meetup
- Buffalo Rust User Group, First Tuesdays
2023-10-04 | Virtual (Stuttgart, DE) | Rust Community Stuttgart
- Rust-Meetup
2023-10-04 | Virtual (Various) | Ferrous Systems
- A Decade of Rust with Ferrous Systems
2023-10-05 | Virtual (Charlottesville, NC, US) | Charlottesville Rust Meetup
- Crafting Interpreters in Rust Collaboratively
2023-10-07 | Virtual (Kampala, UG) | Rust Circle Kampala
- Rust Circle Meetup: Mentorship (First Saturday)
2023-10-10 | Virtual (Berlin, DE) | OpenTechSchool Berlin
- Rust Hack and Learn | Mirror
2023-10-10 | Virtual (Dallas, TX, US) | Dallas Rust
- Second Tuesday
2023-10-11| Virtual (Boulder, CO, US) | Boulder Elixir and Rust
- Monthly Meetup
2023-10-11 - 2023-10-13 | Virtual (Brussels, BE) | EuroRust
- EuroRust 2023
2023-10-12 | Virtual (Nuremberg, DE) | Rust Nuremberg
- Rust Nürnberg online
2023-10-18 | Virtual (Vancouver, BC, CA) | Vancouver Rust
- Rust Study/Hack/Hang-out

Asia

2023-09-25 | Singapore, SG | Metacamp - Web3 Blockchain Community
- Introduction to Rust
2023-09-26 | Singapore, SG | Rust Singapore
- SG Rustaceans! Updated - Singapore First Rust Meetup!
2023-10-03 | Taipei, TW | WebAssembly and Rust Meetup (Wasm Empowering AI)
- WebAssembly Meetup (Wasm Empowering AI) in Taipei

Europe

2023-09-21 | Aarhus, DK | Rust Aarhus
- Rust Aarhus - Rust and Talk at Concordium
2023-09-21 | Bern, CH | Rust Bern
- Rust Bern Meetup #3 2023 🦀
2023-09-28 | Berlin, DE | React Berlin
- React Berlin September Meetup: Creating Videos with React & Remotion & More: Integrating Rust with React Native – Gheorghe Pinzaru
2023-09-28 | Madrid, ES | MadRust
- Primer evento Post COVID: ¡Cervezas MadRust!
2023-09-28 | Paris, FR | Paris Scala User Group (PSUG)
- PSUG #114 Comparons Scala et Rust
2023-09-30 | Saint Petersburg, RU | Rust Saint Petersburg meetups
- Rust Community Meetup: A tale about how I tried to make my Blitz Basic - Vitaly; How to use nix to build projects on Rust – Danil; Getting to know tower middleware. General overview – Mikhail
2023-10-10 | Berlin, DE | OpenTechSchool Berlin
- Rust Hack and Learn
2023-10-12 | Reading, UK | Reading Rust Workshop
- Reading Rust Meetup at Browns
2023-10-17 | Leipzig, DE | Rust - Modern Systems Programming in Leipzig
- SIMD in Rust

North America

2023-09-21 | Lehi, UT, US | Utah Rust
- A Cargo Preview w/Ed Page, A Cargo Team Member
2023-09-21 | Mountain View, CA, US | Mountain View Rust Meetup
- Rust Meetup at Hacker Dojo
2023-09-21 | Nashville, TN, US | Music City Rust Developers
- Rust on the web! Get started with Leptos
2023-09-26 | Mountain View, CA, US | Rust Breakfast & Learn
- Rust: snacks & learn
2023-09-26 | Pasadena, CA, US | Pasadena Thursday Go/Rust
- Monthly Rust group
2023-09-27 | Austin, TX, US | Rust ATX
- Rust Lunch - Fareground
2023-09-28 | Boulder, CO, US | Solid State Depot - The Boulder Makerspace
- Rust and ROS for Robotics + Happy Hour
2023-10-11 | Boulder, CO, US | Boulder Rust Meetup
- First Meetup - Demo Day and Office Hours
2023-10-12 | Lehi, UT, US | Utah Rust
- The Actor Model: Fearless Concurrency, Made Easy w/Chris Mena
2023-10-17 | San Francisco, CA, US | San Francisco Rust Study Group
- Rust Hacking in Person

Oceania

2023-09-26 | Canberra, ACT, AU | Rust Canberra
- September Meetup
2023-09-26 | Melbourne, VIC, AU | Rust Melbourne
- (Hybrid - online & in person) September 2023 Rust Melbourne Meetup
2023-09-28 | Brisbane, QLD, AU | Rust Brisbane
- September 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.