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‎draft/2025-07-16-this-week-in-rust.md

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### Official
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* [crates.io: development update | Rust Blog](https://blog.rust-lang.org/2025/07/11/crates-io-development-update-2025-07/)
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* [Call for Testing: Speeding up compilation with `hint-mostly-unused`](https://blog.rust-lang.org/inside-rust/2025/07/15/call-for-testing-hint-mostly-unused/)
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### Foundation
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### Newsletters
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* [This Month in Rust OSDev: June 2025](https://rust-osdev.com/this-month/2025-06/)
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### Project/Tooling Updates
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* [egui 0.32 - Atoms, popups, and better SVG support](https://github.com/emilk/egui/releases/tag/0.32.0)
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* [reqwest retries](https://seanmonstar.com/blog/reqwest-retries/)
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* [Introducing Rudy: A Toolchain for Rust Debuginfo](https://www.samjs.io/blog/rudy)
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* [RootAsRole 3.1.0 - Outperforms sudo, configurability, -u, -g, -E features](https://github.com/LeChatP/RootAsRole/releases/tag/v3.1.0)
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[UltraGraph 0.8: 1,300x Faster Graph Analytics — No Cluster Needed](https://deepcausality.com/blog/announcement-ultragraph-0-8)
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* [Helix Release 25.07 Highlights](https://helix-editor.com/news/release-25-07-highlights/)
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* [UltraGraph 0.8: 1,300x Faster Graph Analytics — No Cluster Needed](https://deepcausality.com/blog/announcement-ultragraph-0-8)
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### Observations/Thoughts
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* [placing functions](https://blog.yoshuawuyts.com/placing-functions/)
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* [Rust is a great fit for the agentic era](https://kerkour.com/rust-agentic-coding)
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* [Here comes the sun: iteratively building a Rust program that gets the current weather conditions](https://bitfieldconsulting.com/posts/here-comes-sun)
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* [Thinking in Rust: Ownership, Access, and Memory Safety](https://cocoindex.io/blogs/rust-ownership-access/)
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* [Adding lookbehinds to rust-lang/regex](https://systemf.epfl.ch/blog/rust-regex-lookbehinds/)
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* [Publish all your crates everywhere all at once](https://www.tweag.io/blog/2025-07-10-cargo-package-workspace/)
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* [Variadic Generics ideas that won’t work for Rust](https://poignardazur.github.io/2025/07/09/variadic-generics-dead-ends/)
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* [audio] [Traceability](https://sdr-podcast.com/episodes/traceability/)
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* [KSAT with Vegard Sandengen](https://corrode.dev/podcast/s04e07-ksat/)
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### Rust Walkthroughs
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* [Programming Extensible Data Types in Rust with CGP - Part 3: Implementing Extensible Records](https://contextgeneric.dev/blog/extensible-datatypes-part-3/)
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* [Axum: Optimizing web API design with the Builder Pattern](https://medium.com/@adefemiadeoye/axum-optimizing-web-api-design-with-the-builder-pattern-08aa8e18a599)
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* [Rust unit testing test types](https://jorgeortiz.dev/posts/rust_unit_testing_test_types/)
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### Research
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* [Tree Borrows](https://plf.inf.ethz.ch/research/pldi25-tree-borrows.html)
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* [Securing Mixed Rust with Hardware Capabilities](https://arxiv.org/abs/2507.03344)
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### Miscellaneous
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* [June 2025 Rust Jobs Report](https://filtra.io/rust/jobs-report/jun-25)
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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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An important step for RFC 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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If you are a feature implementer and would like your RFC 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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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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* *No RFCs were approved this week.*
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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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* [Guarantee 8 bytes of alignment in Thread::into_raw](https://github.com/rust-lang/rust/pull/143859)
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* [rustdoc: add ways of collapsing all impl blocks](https://github.com/rust-lang/rust/pull/141663)
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* [Stabilize `const_float_round_methods`](https://github.com/rust-lang/rust/pull/143604)
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* [Tracking Issue for `#![feature(const_float_round_methods)]`](https://github.com/rust-lang/rust/issues/141555)
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* [Add `target_env = "macabi"` and `target_env = "sim"`](https://github.com/rust-lang/rust/pull/139451)
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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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##### [Rust RFCs](https://github.com/rust-lang/rfcs/labels/final-comment-period),
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* [Closing issues relevant to T-lang on this repo](https://github.com/rust-lang/rfcs/issues/3756)
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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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*No Items entered Final Comment Period this week for
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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) or
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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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##### [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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Let us know if you would like your PRs, Tracking Issues or RFCs to be tracked as a part of this list.
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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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* [new] [repr(scalable)](https://github.com/rust-lang/rfcs/pull/3838)
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## Upcoming Events
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Rusty Events between 2025-07-16 - 2025-08-13 🦀
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### Virtual
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* 2025-07-13 | Virtual (Dallas, TX, US) | [Dallas Rust User Meetup](https://www.meetup.com/dallasrust)
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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)
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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)
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* [**Mid-month Rustful**](https://www.meetup.com/rustdc/events/306757755)
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* 2025-07-16 | Hybrid (Vancouver, BC, CA) | [Vancouver Rust](https://www.meetup.com/vancouver-rust)
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* [**Rust Study/Hack/Hang-out**](https://www.meetup.com/vancouver-rust/events/307731031)
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* 2025-07-17 | Hybrid (Redmond, WA, US) | [Seattle Rust User Group](https://www.meetup.com/join-srug)
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* [**Rust Readers Discord Discussion: Rust Atomics and Locks**](https://www.meetup.com/dallasrust/events/bhctrtyhclbfb)
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* 2025-08-06 | 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/wqzhftyhclbjb)
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* 2025-08-10 | Virtual (Dallas, TX, US) | [Dallas Rust User Meetup](https://www.meetup.com/dallasrust)
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* [**Rust Readers Discord Discussion: Rust Atomics and Locks**](https://www.meetup.com/dallasrust/events/bhctrtyhclbnb)
219+
* 2025-08-12 | Virtual (Dallas, TX, US) | [Dallas Rust User Meetup](https://www.meetup.com/dallasrust)
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* [**Second Tuesday**](https://www.meetup.com/dallasrust/events/305361531)
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### Asia
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* 2025-07-19 | Delhi, IN | [Rust Delhi](https://www.meetup.com/rustdelhi)
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* [**Rust Delhi Meetup #11**](https://www.meetup.com/rustdelhi/events/308666751)
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* 2025-07-26 | Bangalore, IN | [Rust Bangalore](https://hasgeek.com/rustbangalore)
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* [**July 2025 Rustacean meetup**](https://hasgeek.com/rustbangalore/july-2025-rustacean-meetup/)
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### Europe
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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)
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* [**Reading Rust Meetup**](https://www.meetup.com/reading-rust-workshop/events/308705791)
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* 2025-07-10 | Berlin, DE | [Rust Berlin](https://www.meetup.com/rust-berlin)
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* [**Rust Berlin on location 🏳️‍🌈 - Edition 004**](https://www.meetup.com/rust-berlin/events/308987361)
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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)
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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)
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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)
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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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* 2025-07-26 | Stockholm, SE | [Stockholm Rust](https://www.meetup.com/stockholm-rust)
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* [**Ferris' Fika Forum #15**](https://www.meetup.com/stockholm-rust/events/309275728)
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* 2025-07-29 | Manchester, UK | [Rust Manchester](https://www.meetup.com/rust-manchester)
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* [**Lightning Talks July 2025**](https://www.meetup.com/rust-manchester/events/308085035)
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* 2025-07-29 | Prague, CZ | [Rust Czech Republic](https://www.meetup.com/rust-czech-republic)
@@ -279,16 +242,12 @@ Rusty Events between 2025-07-16 - 2025-08-13 🦀
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* [**Rust Meetup @ BlockTech**](https://www.meetup.com/rust-amsterdam-group/events/308548455)
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* 2025-07-31 | Augsburg, DE | [Rust Meetup Augsburg](https://rust-augsburg.github.io/meetup)
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* [**Rust Meetup #14: Prof. Dr. Claudia Meitinger - Embassy - Möglichkeiten und Herausforderungen im Modul "Interdisciplinary Project"**](https://rust-augsburg.github.io/meetup/Meetup_14.html)
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* 2025-08-06 | Girona, ES | [Rust Girona](https://lu.ma/rust-girona)
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* [**Rust Girona Hack & Learn 08 2025**](https://lu.ma/eoydaar9)
247+
* 2025-08-13 | Reading, UK | [Reading Rust Workshop](https://www.meetup.com/reading-rust-workshop)
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* [**Reading Rust Meetup**](https://www.meetup.com/reading-rust-workshop/events/308944036)
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### North America
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* 2025-07-09 | Phoenix, AZ, US | [Desert Rust](https://www.meetup.com/desert-rustaceans)
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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/)
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* [**RUST MEETUP at HACKER DOJO**](https://www.meetup.com/hackerdojo/events/308277549)
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* 2025-07-10 | Portland, OR, US | [PDXRust](https://www.meetup.com/pdxrust)
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* [**July 2025 PDX Rust Meetup**](https://www.meetup.com/pdxrust/events/309056548)
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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)
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* [**Rust Hacking in Person**](https://www.meetup.com/san-francisco-rust-study-group/events/307931266)
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* 2025-07-16 | Hybrid (Vancouver, BC, CA) | [Vancouver Rust](https://www.meetup.com/vancouver-rust)
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* [**Rust Study/Hack/Hang-out**](https://www.meetup.com/vancouver-rust/events/307731031)
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* 2025-07-17 | Chicago, IL, US | [Chicago Rust Meetup](https://www.meetup.com/chicago-rust-meetup)
@@ -301,12 +260,16 @@ Rusty Events between 2025-07-16 - 2025-08-13 🦀
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* [**Rust Lunch - Fareground**](https://www.meetup.com/rust-atx/events/308791385)
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* 2025-07-24 | Mountain View, CA, US | [Hacker Dojo](https://www.meetup.com/hackerdojo/)
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* [**RUST MEETUP at HACKER DOJO**](https://www.meetup.com/hackerdojo/events/xdxtqtyhckbgc)
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* 2025-07-24 | México City, MX | [Rust MX](https://www.meetup.com/rust-mx)
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* [**Construyendo un Runtime Asíncrono desde Cero en Rust**](https://www.meetup.com/rust-mx/events/309687971)
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* 2025-07-31 | Atlanta, GA, US | [Rust Atlanta](https://www.meetup.com/rust-atl)
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* [**Rust-Atl**](https://www.meetup.com/rust-atl/events/308675947)
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* 2025-08-07 | Saint Louis, MO, US | [STL Rust](https://www.meetup.com/stl-rust)
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* [**macros!**](https://www.meetup.com/stl-rust/events/306648747)
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* 2025-08-12 | San Francisco, CA, US | [San Francisco Rust Study Group](https://www.meetup.com/san-francisco-rust-study-group)
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* [**Rust Hacking in Person**](https://www.meetup.com/san-francisco-rust-study-group/events/308284338)
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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)
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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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