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Title: This Week in Rust 607
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Number: 607
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Date: 2025-07-09
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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
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[@thisweekinrust.bsky.social](https://bsky.app/profile/thisweekinrust.bsky.social) on Bluesky or
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[@ThisWeekinRust](https://mastodon.social/@thisweekinrust) on mastodon.social, or
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[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 feature implementation is for people to experiment with the
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implementation and give feedback, especially before stabilization.
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If you are a feature implementer and would like your feature to appear in this list, add a
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`call-for-testing` label to your RFC along with a comment providing testing instructions and/or
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guidance on which aspect(s) of the feature need testing.
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<!-- If there are new CfT items this week, use: -->
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<!--
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[Repo Name](Repo URL)
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* [<Feature name>](<Feature URL>)
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* [Testing steps](<Testing Steps URL>)
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-->
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<!-- where `Repo Name` and `Repo URL` are one of:
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[Rust](https://github.com/rust-lang/rust/labels/call-for-testing),
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[Rust language RFCs](https://github.com/rust-lang/rfcs/issues?q=label%3Acall-for-testing),
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[Cargo](https://github.com/rust-lang/cargo/labels/call-for-testing) or
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[Rustup](https://github.com/rust-lang/rustup/labels/call-for-testing)
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-->
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<!-- For all `Repo Names` with no new CfT items this week: use (removing the repos for which new
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CfT items did appear, of course) -->
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<!--
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* *No calls for testing were issued this week by
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[Rust](https://github.com/rust-lang/rust/labels/call-for-testing),
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[Rust language RFCs](https://github.com/rust-lang/rfcs/issues?q=label%3Acall-for-testing),
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[Cargo](https://github.com/rust-lang/cargo/labels/call-for-testing) or
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[Rustup](https://github.com/rust-lang/rustup/labels/call-for-testing).*
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-->
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* *No calls for testing were issued this week by [Rust](https://github.com/rust-lang/rust/labels/call-for-testing),
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[Rust language RFCs](https://github.com/rust-lang/rfcs/issues?q=label%3Acall-for-testing),
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[Cargo](https://github.com/rust-lang/cargo/labels/call-for-testing) or
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[Rustup](https://github.com/rust-lang/rustup/labels/call-for-testing).*
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[Let us know](https://github.com/rust-lang/this-week-in-rust/issues) if you would like your feature to be tracked as a part of this list.
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-->
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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 2025-07-09 - 2025-08-06 🦀
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### Virtual
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* 2025-07-02 | Virtual (Indianapolis, IN, US) | [Indy Rust](https://www.meetup.com/indyrs)
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* [**Indy.rs - with Social Distancing**](https://www.meetup.com/indyrs/events/302031667)
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* 2025-07-03 | 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/300820304)
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* 2025-07-03 | Virtual (Rotterdam, NL) | [Bevy Game Development](https://www.meetup.com/bevy-game-development/events/)
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* [**Bevy Meetup #11**](https://www.meetup.com/bevy-game-development/events/308463394)
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* 2025-07-05 | 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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* 2025-07-06 | Virtual (Dallas, TX, US) | [Dallas Rust User Meetup](https://www.meetup.com/dallasrust/events/)
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* [**Rust Readers Discord Discussion: Async Rust**](https://www.meetup.com/dallasrust/events/308298511)
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* 2025-07-08 | 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/305361452)
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* 2025-07-13 | Virtual (Dallas, TX, US) | [Dallas Rust User Meetup](https://www.meetup.com/dallasrust/events/)
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* [**Rust Readers Discord Discussion: Async Rust**](https://www.meetup.com/dallasrust/events/308298512)
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* 2025-07-15 | Virtual (London, UK) | [Women in Rust](https://www.meetup.com/women-in-rust/events/)
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* [**👋 Community Catch Up**](https://www.meetup.com/women-in-rust/events/307560349)
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* 2025-07-15 | 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/306757755)
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* 2025-07-16 | 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/307731031)
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* 2025-07-17 | 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/300820305)
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* 2025-07-20 | Virtual (Dallas, TX, US) | [Dallas Rust User Meetup](https://www.meetup.com/dallasrust/events/)
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* [**Rust Readers Discord Discussion: Rust Atomics and Locks**](https://www.meetup.com/dallasrust/events/308383001)
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* 2025-07-22 | 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/tgctrtyhckbdc)
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* 2025-07-22 | Virtual (London, UK) | [Women in Rust](https://www.meetup.com/women-in-rust/events/)
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* [**Lunch & Learn: Crates, Tips & Tricks Lightning Talks - Bring your ideas!**](https://www.meetup.com/women-in-rust/events/307560304)
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* 2025-07-27 | Virtual (Dallas, TX, US) | [Dallas Rust User Meetup](https://www.meetup.com/dallasrust/events/)
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* [**Rust Readers Discord Discussion: Rust Atomics and Locks**](https://www.meetup.com/dallasrust/events/bhctrtyhckbkc)
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### Asia
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* 2025-07-02 | Seoul, KR | [Seoul Rust (Programming Language) Meetup](https://www.meetup.com/rust-seoul-meetup/events/)
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* [**Seoul Rust Meetup**](https://www.meetup.com/rust-seoul-meetup/events/308408246)
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### Europe
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* 2025-07-02 | Basel, CH | [Rust Basel](https://www.meetup.com/rust-basel)
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* [**Rust Meetup #12 @ kHaus**](https://www.meetup.com/rust-basel/events/307567391)
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* 2025-07-02 | Frankfurt, DE | [Rust Rhein-Main](https://www.meetup.com/rust-rhein-main/events/)
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* [**The (un)holy Trinity of Flutter, Rust and C**](https://www.meetup.com/rust-rhein-main/events/308609465)
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* 2025-07-02 | London, UK | [Oxford Rust Meetup Group](https://www.meetup.com/oxford-rust-meetup-group/)
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* [**Oxford Rust and ACCU special - Vibe coding workshop**](https://www.meetup.com/oxford-rust-meetup-group/events/308435063/)
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* 2025-07-02 | Posnan, PL | [Rust Poland](https://www.meetup.com/rust-poland-meetup/)
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* [**Rust Poland Meetup x Poznan**](https://www.meetup.com/rust-poland-meetup/events/308480357)
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* 2025-07-03 | Karlsruhe, DE | [Rust Hack & Learn Karlsruhe](https://www.meetup.com/rust-hack-learn-karlsruhe/)
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* [**Karlsruhe Rust Hack and Learn Meetup bei BlueYonder**](https://www.meetup.com/rust-hack-learn-karlsruhe/events/308328739/)
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* 2025-07-05 | Stockholm, SE | [Stockholm Rust](https://www.meetup.com/stockholm-rust/events/)
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* [**Ferris' Fika Forum #13**](https://www.meetup.com/stockholm-rust/events/308530949)
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* 2025-07-08 | London, UK | [London Rust Project Group](https://www.meetup.com/london-rust-project-group/events/)
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* [**Garbage Collection for Rust: the Finalizer Frontier**](https://www.meetup.com/london-rust-project-group/events/308443710)
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* 2025-07-09 | Girona, ES | [Rust Girona](https://lu.ma/rust-girona)
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* [**Rust Girona Hack & Learn 07 2025**](https://lu.ma/hismn492)
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* 2025-07-09 | 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/wrdkmtyhckbmb)
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* 2025-07-15 | 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/308592246)
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* 2025-07-15 | London, UK | [London Rust Project Group](https://www.meetup.com/london-rust-project-group/events/)
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* [**TUI Power: Simulating & Visualising Sensor Data with Rust**](https://www.meetup.com/london-rust-project-group/events/308434768)
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* 2025-07-23 | Dortmund, DE | [Rust Dortmund](https://www.meetup.com/rust-dortmund/)
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* [**Rust Dortmund Meetup - Teach and Hack**](https://www.meetup.com/rust-dortmund/events/308517530/)
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* 2025-07-24 | Edinburgh, UK | [Rust and Friends](https://www.meetup.com/rust-edi/events/)
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* [**July talks: A Crab, a Pufferfish and a State-of-the-art Chess AI**](https://www.meetup.com/rust-and-friends/events/308687848)
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* 2025-07-24 | Nuremberg/Nürnberg, DE | [Rust Nuremberg](https://www.meetup.com/rust-noris/)
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* [**Rust Nürnberg online**](https://www.meetup.com/rust-noris/events/304567874/)
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* 2025-07-29 | Manchester, UK | [Rust Manchester](https://www.meetup.com/rust-manchester/events/)
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* [**Lightning Talks July 2025**](https://www.meetup.com/rust-manchester/events/308085035)
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* 2025-07-30 | Amsterdam, NL | [Rust Developers Amsterdam Group](https://www.meetup.com/rust-amsterdam-group/events/)
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* [**Rust Meetup @ BlockTech**](https://www.meetup.com/rust-amsterdam-group/events/308548455)
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### North America
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* 2025-07-03 | Montréal, QC, CA | [Rust Montréal](https://www.meetup.com/rust-montreal/events/)
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* [**July Monthly Social**](https://www.meetup.com/rust-montreal/events/308532058)
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* 2025-07-03 | Saint Louis, MO, US | [STL Rust](https://www.meetup.com/stl-rust/events/)
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* [**Building Resilient and Observable Rust Services with steady_state**](https://www.meetup.com/stl-rust/events/306345853)
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* 2025-07-06 | Boston, MA, US | [Boston Rust Meetup](https://www.meetup.com/bostonrust/events/)
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* [**Alewife Rust Lunch, July 6**](https://www.meetup.com/bostonrust/events/307936287)
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* 2025-07-07 | Denver, CO, US | [FOSS Rust Colorado](https://mobilizon.us/@foss_rust_colorado/events)
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* [**Embedded Rust Hack Night**](https://mobilizon.us/events/e9d6fd47-6120-4789-ad04-313d6a04f572)
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* 2025-07-08 | New York, NY, US | [Rust NYC](https://www.meetup.com/rust-nyc/events/)
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* [**Rust NYC: The perks and pitfalls of using Rust for codegen**](https://www.meetup.com/rust-nyc/events/308679186)
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* 2025-07-09 | Phoenix, AZ, US | [Desert Rust](https://www.meetup.com/desert-rustaceans/events/)
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* [**Rust <> AI**](https://www.meetup.com/desert-rustaceans/events/308507249/)
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* 2025-07-10 | Mountain View, CA, US | [Hacker Dojo](https://www.meetup.com/hackerdojo/events/)
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* [**RUST MEETUP at HACKER DOJO**](https://www.meetup.com/hackerdojo/events/308277549)
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* 2025-07-15 | San Francisco, CA, US | [San Francisco Rust Study Group](https://www.meetup.com/san-francisco-rust-study-group/events/)
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* [**Rust Hacking in Person**](https://www.meetup.com/san-francisco-rust-study-group/events/307931266)
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* 2025-07-17 | Nashville, TN, US | [Music City Rust Developers](https://www.meetup.com/music-city-rust-developers/events/)
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* [**Rust on Bare Metal Series 1 : Introduction to Embedded Development**](https://www.meetup.com/music-city-rust-developers/events/304333113)
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* 2025-07-17 | Redmond, WA, US | [Seattle Rust User Group](https://www.meetup.com/join-srug/events/)
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* [**July, 2025 Computer Programming Language Panel (Special Event)**](https://www.meetup.com/seattle-rust-user-group/events/307698855)
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* 2025-07-23 | 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/xvkdgtyhckbfc)
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### South America
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* 2025-07-12 | São Paulo, BR | [Rust São Paulo Meetup](https://www.meetup.com/rust-sao-paulo-meetup/events/)
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* [**Encontro do Rust-SP na WillBank**](https://www.meetup.com/rust-sao-paulo-meetup/events/307308851)
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* 2025-07-17 | Florianópolis, BR | [Rust Brazil + Rust Floripa](https://lu.ma/calendar/cal-iOloL5ZqswCO5Mm)
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* [**Rust Floripa**](https://lu.ma/p0umq6vm)
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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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