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Title: This Week in Rust 594
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Number: 594
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Date: 2025-04-09
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Category: This Week in Rust
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Hello and welcome to another issue of *This Week in Rust*!
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[Rust](https://www.rust-lang.org/) is a programming language empowering everyone to build reliable and efficient software.
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This is a weekly summary of its progress and community.
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Want something mentioned? Tag us at [@ThisWeekInRust](https://x.com/ThisWeekInRust) on X (formerly Twitter) or [@ThisWeekinRust](https://mastodon.social/@thisweekinrust) on mastodon.social, or [send us a pull request](https://github.com/rust-lang/this-week-in-rust).
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Want to get involved? [We love contributions](https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md).
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*This Week in Rust* is openly developed [on GitHub](https://github.com/rust-lang/this-week-in-rust) and archives can be viewed at [this-week-in-rust.org](https://this-week-in-rust.org/).
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If you find any errors in this week's issue, [please submit a PR](https://github.com/rust-lang/this-week-in-rust/pulls).
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Want TWIR in your inbox? [Subscribe here](https://this-week-in-rust.us11.list-manage.com/subscribe?u=fd84c1c757e02889a9b08d289&id=0ed8b72485).
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## Updates from Rust Community
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<!--
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Dear community contributors:
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Please read README.md for guidance on submissions.
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Each submitted link should be of the form:
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* [Title of the Linked Page](https://example.com/my_article)
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If you don't know which category to use, feel free to submit a PR anyway
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and just ask the editors to select the category.
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-->
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### Official
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### Foundation
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### Newsletters
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### Project/Tooling Updates
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### Observations/Thoughts
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### Rust Walkthroughs
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### Research
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### Miscellaneous
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## Crate of the Week
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<!-- COTW goes here -->
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[Please submit your suggestions and votes for next week][submit_crate]!
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[submit_crate]: https://users.rust-lang.org/t/crate-of-the-week/2704
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## Calls for Testing
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An important step for RFC implementation is for people to experiment with the
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implementation and give feedback, especially before stabilization. The following
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RFCs would benefit from user testing before moving forward:
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<!-- Calls for Testing go here, use this format:
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* [<RFC Topic>](<RFC URL>)
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* [Tracking Issue](<Tracking Issue URL>)
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* [Testing steps](<Testing Steps URL>)
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-->
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<!-- or if there are no new or updated RFCs this week, use: -->
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<!-- * *No New or Updated RFCs were created this week.* -->
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<!-- Remember to remove the `call-for-testing` label from the RFC so that the maintainer can signal for testers again, if desired. -->
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### [RFCs](https://github.com/rust-lang/rfcs/issues?q=label%3Acall-for-testing)
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### [Rust](https://github.com/rust-lang/rust/labels/call-for-testing)
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### [Rustup](https://github.com/rust-lang/rustup/labels/call-for-testing)
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If you are a feature implementer and would like your RFC to appear on the above list, add the new `call-for-testing`
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label to your RFC along with a comment providing testing instructions and/or guidance on which aspect(s) of the feature
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need testing.
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## Call for Participation; projects and speakers
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### CFP - Projects
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Always wanted to contribute to open-source projects but did not know where to start?
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Every week we highlight some tasks from the Rust community for you to pick and get started!
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Some of these tasks may also have mentors available, visit the task page for more information.
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<!-- CFPs go here, use this format: * [project name - title of issue](URL to issue) -->
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<!-- * [ - ]() -->
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<!-- or if none - *No Calls for participation were submitted this week.* -->
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If you are a Rust project owner and are looking for contributors, please submit tasks [here][guidelines] or through a [PR to TWiR](https://github.com/rust-lang/this-week-in-rust) or by reaching out on [X (formerly Twitter)](https://x.com/ThisWeekInRust) or [Mastodon](https://mastodon.social/@thisweekinrust)!
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[guidelines]:https://github.com/rust-lang/this-week-in-rust?tab=readme-ov-file#call-for-participation-guidelines
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### CFP - Events
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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.
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<!-- CFPs go here, use this format: * [**event name**](URL to CFP)| Date CFP closes in YYYY-MM-DD | city,state,country | Date of event in YYYY-MM-DD -->
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<!-- or if none - *No Calls for papers or presentations were submitted this week.* -->
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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](https://github.com/rust-lang/this-week-in-rust) or by reaching out on [X (formerly Twitter)](https://x.com/ThisWeekInRust) or [Mastodon](https://mastodon.social/@thisweekinrust)!
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## Updates from the Rust Project
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<!-- Rust updates go here -->
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### Rust Compiler Performance Triage
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<!-- Perf results go here -->
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### [Approved RFCs](https://github.com/rust-lang/rfcs/commits/master)
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Changes to Rust follow the Rust [RFC (request for comments) process](https://github.com/rust-lang/rfcs#rust-rfcs). These
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are the RFCs that were approved for implementation this week:
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<!-- Approved RFCs go here, use this format: * [Topic](URL) -->
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<!-- or if none were approved this week, use: * *No RFCs were approved this week.* -->
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<!-- * []() -->
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<!--
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### [Approved Major Change Proposals (MCP)](https://forge.rust-lang.org/compiler/mcp.html)
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<!~~ MCPs occur infrequently, so this section is commented out by default. ~~>
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<!~~ MCPs which have been approved or rejected this week go here, use this format: * [major change accepted|rejected] [Topic](URL) ~~>
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-->
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### Final Comment Period
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Every week, [the team](https://www.rust-lang.org/team.html) announces the 'final comment period' for RFCs and key PRs
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which are reaching a decision. Express your opinions now.
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#### [RFCs](https://github.com/rust-lang/rfcs/labels/final-comment-period)
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<!-- RFCs which have entered FCP go here, use this format: * [disposition: merge|close] [Topic](URL) -->
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<!-- or if none entered FCP this week, use: * *No RFCs entered Final Comment Period this week.* -->
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<!-- * [disposition: ] []() -->
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#### Tracking Issues & PRs
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<!-- Tracking Issues which have entered FCP go here, use this format: * [disposition: merge|close] [Topic](URL) -->
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<!-- or if none entered FCP this week, use: -->
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<!-- * *No Tracking Issues or PRs entered Final Comment Period this week.* -->
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<!-- * [disposition: ] []() -->
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##### [Rust](https://github.com/rust-lang/rust/issues?q=is%3Aopen+label%3Afinal-comment-period+sort%3Aupdated-desc)
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##### [Cargo](https://github.com/rust-lang/cargo/issues?q=is%3Aopen+label%3Afinal-comment-period+sort%3Aupdated-desc)
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##### [Language Team](https://github.com/rust-lang/lang-team/issues?q=is%3Aopen+label%3Afinal-comment-period+sort%3Aupdated-desc+)
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##### [Language Reference](https://github.com/rust-lang/reference/issues?q=is%3Aopen+label%3Afinal-comment-period+sort%3Aupdated-desc)
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##### [Unsafe Code Guidelines](https://github.com/rust-lang/unsafe-code-guidelines/issues?q=is%3Aopen+label%3Afinal-comment-period+sort%3Aupdated-desc)
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#### [New and Updated RFCs](https://github.com/rust-lang/rfcs/pulls)
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<!-- New or updated RFCs go here, use this format: * [new|updated] [Topic](URL) -->
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<!-- or if there are no new or updated RFCs this week, use: -->
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<!-- * *No New or Updated RFCs were created this week.* -->
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<!-- * [new|updated] []() -->
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## Upcoming Events
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Rusty Events between 2025-04-09 - 2025-05-07 🦀
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### Virtual
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* 2025-04-02 | Virtual (Indianapolis, IN, US) | [Indy Rust](https://www.meetup.com/indyrs/events/)
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* [**Indy.rs - with Social Distancing**](https://www.meetup.com/indyrs/events/302031661)
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* 2025-04-03 | Virtual (Nürnberg, DE) | [Rust Nurnberg DE](https://www.meetup.com/rust-noris/)
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* [**Rust Nürnberg online**](https://www.meetup.com/rust-noris/events/300820282/)
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* 2025-04-03 | Virtual | [Ardan Labs](https://www.eventbrite.com/o/ardan-labs-7092394651)
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* [**Communicate with Channels in Rust**](https://www.eventbrite.com/e/communicate-with-channels-in-rust-tickets-1278267335009)
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* 2025-04-05 | Virtual (Kampala, UG) | [Rust Circle Meetup](https://www.eventbrite.com/o/rust-circle-kampala-65249289033)
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* [**Rust Circle Meetup**](https://www.eventbrite.com/e/rust-circle-meetup-tickets-628763176587)
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* 2025-04-08 | Virtual (Dallas, TX, US) | [Dallas Rust User Meetup](https://www.meetup.com/dallasrust/events/)
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* [**Second Tuesday**](https://www.meetup.com/dallasrust/events/303522530)
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* 2025-04-10 | Virtual (Berlin, DE) | [Rust Berlin](https://www.meetup.com/rust-berlin/events/)
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* [**Rust Hack and Learn**](https://www.meetup.com/rust-berlin/events/300820298)
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* 2025-04-15 | Virtual (Washington, DC, US) | [Rust DC](https://www.meetup.com/rustdc/events/)
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* [**Mid-month Rustful**](https://www.meetup.com/rustdc/events/305170698)
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* 2025-04-16 | Virtual (Vancouver, BC, CA) | [Vancouver Rust](https://www.meetup.com/vancouver-rust/events/)
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* [**Rust Study/Hack/Hang-out**](https://www.meetup.com/vancouver-rust/events/306231500)
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* 2025-04-17 | Virtual and In-Person (Redmond, WA, US) | [Seattle Rust User Group](https://www.meetup.com/join-srug/events/)
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* [**April, 2025 SRUG (Seattle Rust User Group) Meetup**](https://www.meetup.com/seattle-rust-user-group/events/305658454)
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* 2025-04-22 | Virtual (Dallas, TX, US) | [Dallas Rust User Meetup](https://www.meetup.com/dallasrust/events/)
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* [**Fourth Tuesday**](https://www.meetup.com/dallasrust/events/305361432)
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* 2025-04-23 | Virtual (Cardiff, UK) | [Rust and C++ Cardiff](https://www.meetup.com/rust-and-c-plus-plus-in-cardiff/events/)
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* [**Beyond embedded - OS development in Rust **](https://www.meetup.com/rust-and-c-plus-plus-in-cardiff/events/307036053)
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* 2025-04-24 | Virtual (Berlin, DE) | [Rust Berlin](https://www.meetup.com/rust-berlin/events/)
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* [**Rust Hack and Learn**](https://www.meetup.com/rust-berlin/events/300820299)
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* 2025-04-24 | Virtual (Charlottesville, VA, US) | [Charlottesville Rust Meetup](https://www.meetup.com/charlottesville-rust-meetup/events/)
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* [**Part 2: Quantum Computers Can’t Rust-Proof This!"**](https://www.meetup.com/charlottesville-rust-meetup/events/306679733)
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### Asia
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* 2025-04-05 | Bangalore/Bengaluru, IN | [Rust Bangalore](https://hasgeek.com/rustbangalore)
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* [**April 2025 Rustacean meetup**](https://hasgeek.com/rustbangalore/april-2025-rustacean-meetup/)
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* 2025-04-22 | Tel Aviv-Yafo, IL | [Rust 🦀 TLV](https://www.meetup.com/rust-tlv/events/)
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* [**In person Rust April 2025 at Braavos in Tel Aviv in collaboration with StarkWare**](https://www.meetup.com/rust-tlv/events/306530984)
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### Europe
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* 2025-04-02 | Cambridge, UK | [Cambridge Rust Meetup](https://www.meetup.com/cambridge-rust-meetup/events/)
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* [**Monthly Rust Meetup**](https://www.meetup.com/cambridge-rust-meetup/events/306553077)
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* 2025-04-02 | Köln, DE | [Rust Cologne](https://www.meetup.com/rust-cologne-bonn/events/)
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* [**Rust in April: Rust Embedded, Show and Tell**](https://www.meetup.com/rustcologne/events/306940549)
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* 2025-04-02 | München, DE | [Rust Munich](https://www.meetup.com/rust-munich/events/)
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* [**Rust Munich 2025 / 1 - hybrid**](https://www.meetup.com/rust-munich/events/306097261)
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* 2025-04-02 | Oxford, UK | [Oxford Rust Meetup Group](https://www.meetup.com/oxford-rust-meetup-group/events/)
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* [**Oxford Rust and C++ social**](https://www.meetup.com/oxford-rust-meetup-group/events/306541535)
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* 2025-04-02 | Stockholm, SE | [Stockholm Rust](https://www.meetup.com/stockholm-rust/events/)
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* [**Rust Meetup @Funnel**](https://www.meetup.com/stockholm-rust/events/306627608)
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* 2025-04-03 | Oslo, NO | [Rust Oslo](https://www.meetup.com/rust-oslo/events/)
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* [**Rust Hack'n'Learn at Kampen Bistro**](https://www.meetup.com/rust-oslo/events/305809680)
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* 2025-04-08 | Olomouc, CZ | [Rust Moravia](https://www.meetup.com/rust-moravia/events/)
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* [**3. Rust Moravia Meetup (Real Embedded Rust)**](https://www.meetup.com/rust-moravia/events/306377283)
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* 2025-04-09 | Girona, ES | [Rust Girona](https://lu.ma/rust-girona)
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* [**Rust Girona Hack & Learn 04 2025**](https://lu.ma/dlvfol30)
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* 2025-04-09 | Reading, UK | [Reading Rust Workshop](https://www.meetup.com/reading-rust-workshop/events/)
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* [**Reading Rust Meetup**](https://www.meetup.com/reading-rust-workshop/events/305045446)
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* 2025-04-10 | Karlsruhe, DE | [Rust Hack & Learn Karlsruhe](https://www.meetup.com/rust-hack-learn-karlsruhe/events/)
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* [**Karlsruhe Rust Hack and Learn Meetup bei BlueYonder**](https://www.meetup.com/rust-hack-learn-karlsruhe/events/306682264)
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* 2025-04-15 | Leipzig, DE | [Rust - Modern Systems Programming in Leipzig](https://www.meetup.com/rust-modern-systems-programming-in-leipzig/events/)
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* [**Topic TBD**](https://www.meetup.com/rust-modern-systems-programming-in-leipzig/events/305741632)
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* 2025-04-15 | London, UK | [Women in Rust](https://www.meetup.com/women-in-rust/events/)
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* [**WIR x WCC: Finding your voice in Tech**](https://www.meetup.com/women-in-rust/events/306774769)
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* 2025-04-19 | Istanbul, TR | [Türkiye Rust Community](https://kommunity.com/turkiye-rust-community/events)
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* [**Rust Konf Türkiye**](https://kommunity.com/turkiye-rust-community/events/rust-konf-turkiye-91f7b3a6)
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* 2025-04-23 | London, UK | [London Rust Project Group](https://www.meetup.com/london-rust-project-group/events/)
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* [**Fusing Python with Rust using raw C bindings**](https://www.meetup.com/london-rust-project-group/events/306644439)
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* 2025-04-24 | Aarhus, DK | [Rust Aarhus](https://www.meetup.com/rust-aarhus/events/)
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* [**Talk Night at MFT Energy**](https://www.meetup.com/rust-aarhus/events/305809344)
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* 2025-04-24 | Edinburgh, UK | [Rust and Friends](https://www.meetup.com/rust-edi/events/)
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* [**Rust and Friends (evening pub)**](https://www.meetup.com/rust-and-friends/events/306911347)
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* 2025-04-24 | Manchester, UK | [Rust Manchester](https://www.meetup.com/rust-manchester/events/)
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* [**Rust Manchester April Code Night**](https://www.meetup.com/rust-manchester/events/306899063)
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* 2025-04-25 | Edinburgh, UK | [Rust and Friends](https://www.meetup.com/rust-edi/events/)
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* [**Rust and Friends (daytime coffee)**](https://www.meetup.com/rust-and-friends/events/306911357)
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* 2025-04-29 | Paris, FR | [Rust Paris](https://www.meetup.com/rust-paris/events/)
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* [**Rust meetup #76**](https://www.meetup.com/rust-paris/events/306952202)
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### North America
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* 2025-04-03 | Chicago, IL, US | [Chicago Rust Meetup](https://www.meetup.com/chicago-rust-meetup/events/)
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* [**Rust Happy Hour**](https://www.meetup.com/chicago-rust-meetup/events/306728493)
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* 2025-04-03 | Montréal, QC, CA | [Rust Montréal](https://www.meetup.com/rust-montreal/events/)
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* [**April Monthly Social**](https://www.meetup.com/rust-montreal/events/306518514/)
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* 2025-04-03 | Saint Louis, MO, US | [STL Rust](https://www.meetup.com/stl-rust/events/)
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* [**icu4x - resource-constrained internationalization (i18n)**](https://www.meetup.com/stl-rust/events/304890140)
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* 2025-04-06 | Boston, MA, US | [Boston Rust Meetup](https://www.meetup.com/bostonrust/events/)
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* [**Kendall Rust Lunch, Apr 6**](https://www.meetup.com/bostonrust/events/306844327)
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* 2025-04-08 | New York, NY, US | [Rust NYC](https://www.meetup.com/rust-nyc/events/)
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* [**Rust NYC: Building a full-text search Postgres extension in Rust**](https://www.meetup.com/rust-nyc/events/306983122)
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* 2025-04-10 | Portland, OR, US | [PDXRust](https://www.meetup.com/pdxrust/events/)
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* [**TetaNES: A Vaccination for Rust—No Needle, Just the Borrow Checker**](https://www.meetup.com/pdxrust/events/306714209)
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* 2025-04-14 | Boston, MA, US | [Boston Rust Meetup](https://www.meetup.com/bostonrust/events/)
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* [**Coolidge Corner Brookline Rust Lunch, Apr 14**](https://www.meetup.com/bostonrust/events/306844334)
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* 2025-04-17 | Nashville, TN, US | [Music City Rust Developers](https://www.meetup.com/music-city-rust-developers/events/)
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* [**Using Rust For Web Series 1 : Why HTMX Is Bad**](https://www.meetup.com/music-city-rust-developers/events/304333092)
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* 2025-04-17 | Redmond, WA, US | [Seattle Rust User Group](https://www.meetup.com/join-srug/events/)
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* [**April, 2025 SRUG (Seattle Rust User Group) Meetup**](https://www.meetup.com/seattle-rust-user-group/events/305658454)
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* 2025-04-23 | Austin, TX, US | [Rust ATX](https://www.meetup.com/rust-atx/events/)
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* [**Rust Lunch - Fareground**](https://www.meetup.com/rust-atx/events/xvkdgtyhcgbfc)
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* 2025-04-25 | Boston, MA, US | [Boston Rust Meetup](https://www.meetup.com/bostonrust/events/)
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* [**Ball Square Rust Lunch, Apr 25**](https://www.meetup.com/bostonrust/events/306844343)
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### Oceania
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* 2025-04-09 | Sydney, NS, AU | [Rust Sydney](https://www.meetup.com/rust-sydney/events/)
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* [**Crab 🦀 X 🕳️🐇**](https://www.meetup.com/rust-sydney/events/306978026)
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* 2025-04-14 | Christchurch, NZ | [Christchurch Rust Meetup Group](https://www.meetup.com/christchurch-rustlang-meetup-group/events/)
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* [**Christchurch Rust Meetup**](https://www.meetup.com/christchurch-rustlang-meetup-group/events/306841248)
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* 2025-04-22 | Barton, AC, AU | [Canberra Rust User Group](https://www.meetup.com/rust-canberra/events/)
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* [**April Meetup**](https://www.meetup.com/rust-canberra/events/306425557)
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### South America
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* 2025-04-03 | Buenos Aires, AR | [Rust en Español](https://www.meetup.com/rust-argentina/events/)
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* [**Abril - Lambdas y más!**](https://www.meetup.com/rust-argentina/events/306671000)
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If you are running a Rust event please add it to the [calendar] to get
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it mentioned here. Please remember to add a link to the event too.
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Email the [Rust Community Team][community] for access.
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[calendar]: https://www.google.com/calendar/embed?src=apd9vmbc22egenmtu5l6c5jbfc%40group.calendar.google.com
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[community]: mailto:[email protected]
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## Jobs
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<!--
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Rust Jobs:
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TWiR has stopped featuring individual job postings. You can read more about this change here:
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https://github.com/rust-lang/this-week-in-rust/issues/3412
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-->
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Please see the latest [Who's Hiring thread on r/rust](INSERT_LINK_HERE)
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# Quote of the Week
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<!-- QOTW goes here -->
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[Please submit quotes and vote for next week!](https://users.rust-lang.org/t/twir-quote-of-the-week/328)
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*This Week in Rust is edited by: [nellshamrell](https://github.com/nellshamrell), [llogiq](https://github.com/llogiq), [cdmistman](https://github.com/cdmistman), [ericseppanen](https://github.com/ericseppanen), [extrawurst](https://github.com/extrawurst), [U007D](https://github.com/U007D), [joelmarcey](https://github.com/joelmarcey), [mariannegoldin](https://github.com/mariannegoldin), [bennyvasquez](https://github.com/bennyvasquez), [bdillo](https://github.com/bdillo)*
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*Email list hosting is sponsored by [The Rust Foundation](https://foundation.rust-lang.org/)*
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<small>[Discuss on r/rust](REDDIT_LINK_HERE)</small>

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