319 lines
21 KiB
Markdown
319 lines
21 KiB
Markdown
Title: This Week in Rust 441
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Number: 441
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Date: 2022-05-04
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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? Tweet us at [@ThisWeekInRust](https://twitter.com/ThisWeekInRust) 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).
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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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## Updates from Rust Community
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### Foundation
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* [A good start to the year!](https://foundation.rust-lang.org/news/2022-05-03-a-good-start-to-the-year/)
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### Project/Tooling Updates
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* [rust-analyzer changelog #127](https://rust-analyzer.github.io/thisweek/2022/05/02/changelog-127.html)
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* [Redox OS 0.7.0](https://www.redox-os.org/news/release-0.7.0/)
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* [Plotters is back!](https://aaronerhardt.github.io/blog/posts/plotters_is_back/)
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* [Slint (UI crate) weekly update](https://slint-ui.com/thisweek/2022-05-02.html)
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* [Fornjot (Code-CAD in Rust) - Weekly Dev Log - 2022-W16/W17 (Post-Vacation Edition)](https://www.fornjot.app/blog/weekly-dev-log/2022-w16-17/)
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* [BonsaiDb (NoSQL Database) April Update: Dogfooding and Fixing Bugs](https://bonsaidb.io/blog/april-2022-update/)
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* [This week in Databend #40: A Modern Cloud Data Warehouse for Everyone](https://weekly.databend.rs/2022-05-04-databend-weekly/)
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* [This week in Fluvio #31: the programmable streaming platform](https://www.fluvio.io/news/this-week-in-fluvio-0031/)
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### Observations/Thoughts
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* [A shiny future with GATs](https://jackh726.github.io/rust/2022/05/04/a-shiny-future-with-gats.html)
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* [C++ & Rust: Generics and Specialization](https://www.tangramvision.com/blog/c-rust-generics-and-specialization)
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* [The Better Alternative to Lifetime GATs](https://sabrinajewson.org/blog/the-better-alternative-to-lifetime-gats)
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* [Bugs that the Rust compiler catches for you](https://kerkour.com/bugs-rust-compiler-helps-prevent)
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* [Creating an Easy Mode for Rust](https://tim.mcnamara.nz/post/683022094467039232/easy-mode-for-rust)
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* [video] [Async Rust: Portability and Interoperability - Nick Cameron - Rust Linz, April 2022](https://www.youtube.com/watch?v=jxxLQsxJve8)
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* [video] [Rust for the Kubernetes Ecosystem - Deepu K Sasidharan - Rust Linz, April 2022](https://www.youtube.com/watch?v=9icztoT4JVs)
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* [audio] [Game Development with Rust and WebAssembly with Eric Smith](https://rustacean-station.org/episode/066-eric-smith/)
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### Rust Walkthroughs
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* [Patching Cargo Dependencies](https://gatowololo.github.io/blog/cargo-patch/)
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* [Building a crawler in Rust: Scraping and Parsing HTML](https://kerkour.com/rust-crawler-scraping-and-parsing-html)
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* [Save 5 minutes web scraping with rust](https://domenicoluciani.com/2021/04/30/save-5-minutes-web-scraping-with-rust.html)
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* [Building a WebAssembly-powered serverless platform](https://blog.scottlogic.com/2022/04/16/wasm-faas.html)
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* [Self-referential structs and alternatives](https://swatinem.de/blog/self-reference-alternatives/)
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* [video] [Getting good at SNES games through DLL injection](https://fasterthanli.me/videos/getting-good-at-snes)
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### Research
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* [Stay Safe under Panic: Affine Rust Programming with Multiparty Session Types](https://arxiv.org/abs/2204.13464)
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* [Rusty Links in Local Chains](https://arxiv.org/abs/2205.00795)
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## Crate of the Week
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This week's crate is [shuttle](https://shuttle.rs), a rustic declarative deployment solution for and at your service.
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Thanks to [Nodar Daneliya](https://users.rust-lang.org/t/crate-of-the-week/2704/1058) for the self-suggestion!
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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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## Call for Participation
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Always wanted to contribute to open-source projects but didn't 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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If you are a Rust project owner and are looking for contributors, please submit tasks [here][guidelines].
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* [RustConf Call for Proposals is open](https://cfp.rustconf.com/events/rustconf-2022)
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* [maplibre-rs has several good first issues](https://github.com/maplibre/maplibre-rs/issues?q=is%3Aissue+is%3Aopen+label%3A%22good+first+issue%22)
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* [diesel.rs-website has several help wanted issues](https://github.com/sgrif/diesel.rs-website/labels/help%20wanted)
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[guidelines]: https://users.rust-lang.org/t/twir-call-for-participation/4821
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## Updates from the Rust Project
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343 pull requests were [merged in the last week][merged]
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[merged]: https://github.com/search?q=is%3Apr+org%3Arust-lang+is%3Amerged+merged%3A2022-04-25..2022-05-02
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* [add `do yeet` expressions to allow experimentation in nightly](https://github.com/rust-lang/rust/pull/96376)
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* [enforce Copy bounds for repeat elements while considering lifetimes](https://github.com/rust-lang/rust/pull/95819)
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* [enforce static lifetimes in consts during late resolution](https://github.com/rust-lang/rust/pull/95776)
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* [ensure that `'_` and GAT yields errors](https://github.com/rust-lang/rust/pull/95312)
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* [better error messages when collecting into `[T; n]`](https://github.com/rust-lang/rust/pull/96466)
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* [erase type params when suggesting fully qualified path](https://github.com/rust-lang/rust/pull/96347)
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* [fix incorrect suggestion for trait bounds involving binary operators](https://github.com/rust-lang/rust/pull/94034)
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* [improve Error Messaging for Unconstructed Structs and Enum Variants in Generic Contexts](https://github.com/rust-lang/rust/pull/92569)
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* [recover suggestions to introduce named lifetime under NLL](https://github.com/rust-lang/rust/pull/96409)
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* [recover most `impl Trait` and `dyn Trait` lifetime bound suggestions under NLL](https://github.com/rust-lang/rust/pull/96385)
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* [suggest calling method on nested field when struct is missing method](https://github.com/rust-lang/rust/pull/96372)
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* [use the correct lifetime binder for elided lifetimes in path](https://github.com/rust-lang/rust/pull/96559)
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* [when encountering a binding that could be a const or unit variant, suggest the right path](https://github.com/rust-lang/rust/pull/90988)
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* [fix incremental perf regression unsafety checking](https://github.com/rust-lang/rust/pull/96425)
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* [support arrays of zeros in `Vec`'s `__rust_alloc_zeroed` optimization](https://github.com/rust-lang/rust/pull/95362)
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* [make (`e`)`println!` macros eagerly drop temporaries (for backport)](https://github.com/rust-lang/rust/pull/96490)
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* [add `VecDeque::extend` from `vec::IntoIter` and `slice::Iter` specializations](https://github.com/rust-lang/rust/pull/95904)
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* [implement `str` to `[u8]` conversion for refcounted containers](https://github.com/rust-lang/rust/pull/96078)
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* [std: directly use pthread in UNIX parker implementation](https://github.com/rust-lang/rust/pull/96393)
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* [hashbrown: correct the implementation of `Debug` for `ValuesMut` and `IntoValues` structures](https://github.com/rust-lang/hashbrown/pull/321)
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* [hashbrown: fix underflow in `RawIterRange::size_hint`](https://github.com/rust-lang/hashbrown/pull/325)
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* [stdarch: add stdsimd feature to `allow_internal_unstable` attribute in feature detect macros](https://github.com/rust-lang/stdarch/pull/1303)
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* [stdarch: WASM simd128 pairwise/lane-wise](https://github.com/rust-lang/stdarch/pull/1302)
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* [codegen\_gcc: add inline assembly `sym` operands as GCC input operands](https://github.com/rust-lang/rustc_codegen_gcc/pull/163)
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* [cargo: add support for workspace inheritance](https://github.com/rust-lang/cargo/pull/10606)
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* [clippy: extend `extra_unused_lifetimes` to handle impl lifetimes](https://github.com/rust-lang/rust-clippy/pull/8737)
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* [clippy: `needless_late_init`: ignore `if let`, `let mut` and significant drops](https://github.com/rust-lang/rust-clippy/pull/8617)
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* [clippy: `redundant_closure` fix false positive on coerced closure](https://github.com/rust-lang/rust-clippy/pull/8431)
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* [clippy: fix ICE in `cast_slice_different_sizes`](https://github.com/rust-lang/rust-clippy/pull/8720)
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* [clippy: ignore `redundant_pub_crate` in `useless_attribute`](https://github.com/rust-lang/rust-clippy/pull/8743)
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* [rust-analyzer: reload project on `.cargo/config`(`.toml`) changes](https://github.com/rust-lang/rust-analyzer/pull/12093)
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* [rust-analyzer: make "inline type alias" work for `Self` in impls](https://github.com/rust-lang/rust-analyzer/pull/12110)
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* [rust-analyzer: diagnose unresolved derive macros](https://github.com/rust-lang/rust-analyzer/pull/12103)
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* [rust-analyzer: provide Self in record literal completion](https://github.com/rust-lang/rust-analyzer/pull/12123)
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* [rust-analyzer: fix outline mod completion with partial module name](https://github.com/rust-lang/rust-analyzer/pull/12111)
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* [rust-analyzer: fix show `macro_rules` snippet in blocks](https://github.com/rust-lang/rust-analyzer/pull/12098)
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### Rust Compiler Performance Triage
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Performance overall improved in the last week, but some of this is due to fixing
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regressions from prior weeks. This week also brings an average of 4% improvement
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in memory usage across all profiles due to
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[#95171](https://github.com/rust-lang/rust/pull/95171) bumping the LLVM/clang
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used on x86_64-unknown-linux-gnu to compile C and C++ code linked into rustc.
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Triage done by **@simulacrum**.
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Revision range: [1c988cfa..468492](https://perf.rust-lang.org/?start=1c988cfa0b7f4d3bc5b1cb40dc5002f5adbfb9ad&end=468492c2af3993f18b1fe98052200575c4a2e678&absolute=false&stat=instructions%3Au)
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**Summary**:
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| | Regressions 😿 <br />(primary) | Regressions 😿 <br />(secondary) | Improvements 🎉 <br />(primary) | Improvements 🎉 <br />(secondary) | All 😿 🎉 <br />(primary) |
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|:----------:|:------------------------------:|:--------------------------------:|:-------------------------------:|:---------------------------------:|:------------------------:|
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| count | 13 | 1 | 78 | 29 | 91 |
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| mean | 0.8% | 0.3% | -0.9% | -0.8% | -0.7% |
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| max | 1.5% | 0.3% | -2.7% | -2.1% | -2.7% |
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4 Regressions, 3 Improvements, 1 Mixed; 1 of them in rollups
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52 artifact comparisons made in total
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See the [full report](https://github.com/rust-lang/rustc-perf/blob/master/triage/2022-05-03.md) for more.
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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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* *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
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'final comment period' for RFCs and key PRs which are reaching a
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decision. Express your opinions now.
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#### [RFCs](https://github.com/rust-lang/rfcs/labels/final-comment-period)
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* *No RFCs entered Final Comment Period this week.*
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#### [Tracking Issues & PRs](https://github.com/rust-lang/rust/issues?q=is%3Aopen+label%3Afinal-comment-period+sort%3Aupdated-desc)
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* [disposition: merge] [impl Read and Write for `VecDeque<u8>`](https://github.com/rust-lang/rust/pull/95632)
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* [disposition: merge] [Make write/print macros eagerly drop temporaries](https://github.com/rust-lang/rust/pull/96455)
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### [New and Updated RFCs](https://github.com/rust-lang/rfcs/pulls)
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* [new] [Advance disclosure of security vulnerabilities](https://github.com/rust-lang/rfcs/pull/3259)
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## Upcoming Events
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Rusty Events between 2022-05-04 - 2022-06-01 🦀
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### Virtual
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* 2022-05-04 | 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/285121667/)
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* 2022-05-04 | Philadelphia, PA, US | [Rust Philly (Rust Philadelphia)](https://www.meetup.com/RustPhilly/)
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* [**Remote Book Club: Rust for Rustaceans Chapter Discussion**](https://www.meetup.com/RustPhilly/events/285282177/)
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* 2022-05-05 | Charlottesville, VA, US | [Charlottesville Rust Meetup](https://www.meetup.com/Charlottesville-Rust-Meetup/)
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* [**Dealing with failure: producing and consuming Errors in Rust**](https://www.meetup.com/Charlottesville-Rust-Meetup/events/285078007/)
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* 2022-05-09 | Philadelphia, PA, US | [Rust Philly (Rust Philadelphia)](https://www.meetup.com/RustPhilly/)
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* [**Mob Programming: Rome Tools**](https://www.meetup.com/RustPhilly/events/kkbktsydchbmb/)
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* 2022-05-10 | Berlin, DE | [OpenTechSchool Berlin](https://www.meetup.com/opentechschool-berlin/)
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* [**Rust Hack and Learn**](https://www.meetup.com/opentechschool-berlin/events/284399988/)
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* 2022-05-10 | Dallas, TX, US | [Dallas Rust](https://www.meetup.com/Dallas-Rust/)
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* [**Second Tuesday**](https://www.meetup.com/Dallas-Rust/events/vqtjcsydchbnb/)
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* 2022-05-10 | Rostock, DE | [Altow Academy](https://www.meetup.com/altow-academy/)
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* [**7. Rust Meetup Rostock**](https://www.meetup.com/altow-academy/events/283819127/)
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* 2022-05-10 | Saarbrücken, DE | [Rust-Saar](https://www.meetup.com/Rust-Saar/)
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* [**Meetup: 21u16**](https://www.meetup.com/Rust-Saar/events/285483060/)
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* 2022-05-10 | Seattle, WA, US | [Seattle Rust Meetup](https://www.meetup.com/Seattle-Rust-Meetup/)
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* [**Monthly meetup**](https://www.meetup.com/Seattle-Rust-Meetup/events/gskksrydchbnb/)
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* 2022-05-11 | Boulder, CO, US | [Boulder Elixir and Rust](https://www.meetup.com/boulder-elixir-rust/)
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* [**Monthly Meetup**](https://www.meetup.com/boulder-elixir-rust/events/zvxcsrydchbpb/)
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* 2022-05-11 | Malaysia, MY | [Rust Malaysia Meetup](https://rust-malaysia.github.io/meetup/)
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* [**Rust Malaysia Meetup**](https://forms.gle/Xe61Zebj6tY53HR7A)
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* 2022-05-12 | 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/tzjtssydchbqb/)
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* 2022-05-12 | Stuttgart, DE | [Rust Community Stuttgart](https://www.meetup.com/Rust-Community-Stuttgart/)
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* [**Rust-Meetup**](https://www.meetup.com/Rust-Community-Stuttgart/events/swgrssydchbqb/)
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* 2022-05-17 | Washington, DC, US | [Rust DC](https://www.meetup.com/RustDC/)
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* [**Mid-month Rustful**](https://www.meetup.com/RustDC/events/vdhxgsydchbwb/)
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* 2022-05-18 | Philadelphia, PA, US | [Rust Philly (Rust Philadelphia)](https://www.meetup.com/RustPhilly/)
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* [**Remote Book Club: Rust for Rustaceans Chapter Discussion**](https://www.meetup.com/RustPhilly/events/qkbktsydchbxb/)
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* 2022-05-18 | Vancouver, BC, CA | [Vancouver Rust](https://www.meetup.com/Vancouver-Rust/)
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* [**Rust Study/Hack/Hang-out night**](https://www.meetup.com/Vancouver-Rust/events/nwcmpsydchbxb/)
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* 2022-05-24 | Berlin, DE | [OpenTechSchool Berlin](https://www.meetup.com/opentechschool-berlin/)
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* [**Rust Hack and Learn**](https://www.meetup.com/opentechschool-berlin/events/284399980/)
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* 2022-05-24 | San Francisco, CA, US | [Rust Bay Area](https://www.meetup.com/Rust-Bay-Area/)
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* [**(@ Google) What is soundness anyways?**](https://www.meetup.com/Rust-Bay-Area/events/285563981/)
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* 2022-05-25 | Stuttgart, DE | [Rust Community Stuttgart](https://www.meetup.com/Rust-Community-Stuttgart/)
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* [**Rust-Meetup**](https://www.meetup.com/Rust-Community-Stuttgart/events/qwgrssydchbhc/)
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* 2022-06-01 | 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/qwtdjsydcjbcb/)
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* 2022-06-01 | Philadelphia, PA, US | [Rust Philly (Rust Philadelphia)](https://www.meetup.com/RustPhilly/)
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* [**Remote Book Club: Rust for Rustaceans Chapter Discussion**](https://www.meetup.com/RustPhilly/events/qkbktsydcjbcb/)
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### North America
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* 2022-05-11 | Atlanta, GA, US | [Rust ATL](https://www.meetup.com/Rust-ATL/)
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* [**Grab a beer with fellow Rustaceans**](https://www.meetup.com/Rust-ATL/events/pczdssydchbpb/)
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* 2022-05-12 | Columbus, OH, US | [Columbus Rust Society](https://www.meetup.com/columbus-rs/)
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* [**Monthly Meeting**](https://www.meetup.com/columbus-rs/events/dpkhgrydchbqb/)
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* 2022-05-17 | 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/wjkjssydchbwb/)
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* 2022-05-24 | San Francisco, CA, US | [Rust Bay Area](https://www.meetup.com/Rust-Bay-Area/)
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* [**(@ Google) What is soundness anyways?**](https://www.meetup.com/Rust-Bay-Area/events/285563981/)
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### Europe
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* 2022-05-06 | Zurich, CH | [Rust Zurich](https://www.meetup.com/Rust-Zurich/)
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* [**Rust programming language in the high-performance computing environment**](https://www.meetup.com/Rust-Zurich/events/285457518/)
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* 2022-05-09 | Helsinki, FI | [Finland Rust Meetup](https://www.meetup.com/Finland-Rust-Meetup/)
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* [**May meetup**](https://www.meetup.com/Finland-Rust-Meetup/events/285433622/)
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* 2022-05-19 & 05-20 | Berlin, DE | [Entwickler.de](https://entwickler.de/)
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* [**Rust Summit (paid)**](https://entwickler.de/rust-summit)
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* 2022-05-24 | Amsterdam, NL | [Rust Developers Amsterdam Group](https://www.meetup.com/rust-amsterdam-group/)]
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* [**Rust Developer Meetup: Lightning Talks @ Fiberplane**](https://www.meetup.com/rust-amsterdam-group/events/285291653/)
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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:community-team@rust-lang.org
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# Rust Jobs
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**Element**
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* [Software Engineer - VoIP (Go/Rust) (London, UK)](https://apply.workable.com/elementio/j/5BD58AFB6F/)
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**Meilisearch**
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* [Senior Rust Engineer - Core Engine (Paris, FR and Remote)](https://jobs.lever.co/meili/5b9f780a-0c80-41a7-aba0-bd86834e6823)
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**Aembit**
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* [Senior Software Engineer (Rust) (Remote US)](https://www.linkedin.com/jobs/view/2876048244/)
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**PropelAuth**
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* [Founding Backend Engineer (Remote, PST preferred)](https://www.ycombinator.com/companies/propelauth/jobs/b0dl3wz-founding-backend-engineer)
|
||
|
||
**ANIXE**
|
||
|
||
* [Rust Software Engineer (Remote or hybrid work PL, GR)](https://anixe.bamboohr.com/jobs/view.php?id=184&source=bamboohr)
|
||
|
||
**Stockly**
|
||
|
||
* [Back-end developer (Rust, gRPC, PostgreSQL) (Paris, FR)](https://www.welcometothejungle.com/fr/companies/stockly-1/jobs/back-end-developer-rust-grpc-postgresql_paris)
|
||
* [Back-end developer - Engine (Rust, gRPC, PostgreSQL) (Paris, FR)](https://www.welcometothejungle.com/fr/companies/stockly-1/jobs/back-end-developer-engine-team-rust-grpc-postgresql_paris)
|
||
|
||
**Parity**
|
||
|
||
* [Rust / Core Engineer - Parachains Engineering (Remote/Berlin/Lisbon/UK)](https://grnh.se/24949fb13us)
|
||
* [Rust / Core Engineer - Parachains Protocol (Remote/Berlin/Lisbon/UK)](https://grnh.se/06ef2e673us)
|
||
* [Rust Engineer - General opening (Remote/Berlin/Lisbon/UK)](https://grnh.se/1cf2de503us)
|
||
|
||
**Kraken**
|
||
|
||
* [Engineering Manager - Rust - Core Backend (Remote)](https://jobs.lever.co/kraken/53def500-b146-40da-89a8-98adfd7e84e4)
|
||
* [Site Reliability Engineer - Rust - Core Backend (Remote)](https://jobs.lever.co/kraken/1c6b290f-e430-430d-9b40-a258d07686b0)
|
||
* [Rust Engineer, Desktop GUI - Cryptowatch (Remote)](https://jobs.lever.co/kraken/2442ee5c-56b6-4a73-a477-8cdda2b218d5)
|
||
|
||
**Rust Foundation**
|
||
|
||
* [Rust Infrastructure Engineer (Remote)](https://foundation.rust-lang.org/careers/)
|
||
|
||
**Tempus Ex**
|
||
|
||
* [Several full-time Rust positions available (San Francisco, CA, US, Atlanta, GA, US, Austin, TX, US, and Remote)](https://tempus-ex.com/careers)
|
||
|
||
*Tweet us at [@ThisWeekInRust](https://twitter.com/ThisWeekInRust) to get your job offers listed here!*
|
||
|
||
# Quote of the Week
|
||
|
||
> "Ah but logic errors can happen with all languages" yes and I'm sure trains occasionally run into trees as well, but cars are way more likely to. 🙃
|
||
|
||
– [amos on twitter](https://twitter.com/fasterthanlime/status/1519457942474477569)
|
||
|
||
Thanks to [Jacques “erelde” Rimbault](https://users.rust-lang.org/t/twir-quote-of-the-week/328/1225) for the suggestion!
|
||
|
||
[Please submit quotes and vote for next week!](https://users.rust-lang.org/t/twir-quote-of-the-week/328)
|
||
|
||
*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), [andrewpollack](https://github.com/andrewpollack), [U007D](https://github.com/U007D), [kolharsam](https://github.com/kolharsam), [joelmarcey](https://github.com/joelmarcey), [mariannegoldin](https://github.com/mariannegoldin).*
|
||
|
||
*Email list hosting is sponsored by [The Rust Foundation](https://foundation.rust-lang.org/)*
|
||
|
||
<small>[Discuss on r/rust](https://www.reddit.com/r/rust/comments/uil19h/this_week_in_rust_441/)</small>
|