Hello and welcome to another issue of This Week in Rust! Rust is a systems language pursuing the trifecta: safety, concurrency, and speed. This is a weekly summary of its progress and community. Want something mentioned? Tweet us at @ThisWeekInRust or send us a pull request. Want to get involved? We love contributions.

This Week in Rust is openly developed on GitHub. If you find any errors in this week's issue, please submit a PR.

Check out this week's This Week in Rust Podcast

Updates from Rust Community

News & Blog Posts

• Announcing Rustup 1.22.1
• Lang team design meeting: path to membership
• Perspective on Rust Community Moderation
• Programming Servo: the bird’s-eyes view
• Faster Integer Parsing (Rust port)
• Learning Rust: Let's Build a Parser
• nnnoiseless: porting audio code from C to rust
• The Soul of a New Debugger
• String interners in Rust
• Target Feature vs Target CPU for Rust
• Rust and it's Orphan Rules
• Async Interview #8: Stjepan Glavina
• Using RabbitMQ in Rust
• Creating a custom target
• Statically Sized Higher-kinded Polymorphism
• Getting in and out of trouble with Rust futures
• Rust Analyzer Changelog #33
• IntelliJ Rust Changelog #126
• This Month in Rust OSDev (June 2020)
• Cross-compiling Rust from ARM to x86-64
• Writing Rust NIFs for Elixir With Rustler
• Geometric Constraint Solvers Part 1: Algebraic Expressions
• A View of Async Memory Access in Rust
• Building Canrun: A Statically Typed Logic Programming Library for Rust (Part 1)
• Hunting down a non-determinism-bug in our Rust Wasm build
• Implementing the Clipper Chip Cipher in Rust
• Linux Developers May Discuss Allowing Rust Code Within the Kernel
• Machine Learning in Rust and WebAssembly
• Moving from TypeScript to Rust/WebAssembly
• RSoC: Improving Drivers and Kernel - Part 1 (Largely io_uring)
• Rust and WebAssembly from Scratch: Hello World with Strings
• Rust for JavaScript Developers - Pattern Matching and Enums
• Rust is Surprisingly Good as a Server Language
• Some Learnings from Implementing a Normalizing Rust Representer
• Subclassing GTK Widgets in Rust
• [spanish] Rust es orientado a objeto?
• [audio] Fuzzing Rust with Shnatsel Podcast
• [video] Rust Loops Part 1: loop, break, continue
• [video] Hitting A Bug in the Rust Compiler - While Writing A Boring Link Checker
• [video] Two Sum Problem - Leet Code + Rust
• [video] Rust + WebAssembly - EdgeXR @ Netlight
• [video] Rust Meetup - Adding WASM Support to a Native Application (GameDev Edition)

Crate of the Week

This week's crate is nnnoiseless, a filter for audio noise removal ported from C.

Thanks to mmmmib for the suggestion!

Submit your suggestions and votes for next week!

Call for Participation

Always wanted to contribute to open-source projects but didn't know where to start? Every week we highlight some tasks from the Rust community for you to pick and get started!

Some of these tasks may also have mentors available, visit the task page for more information.

• rust_gpiozero is looking for contributors

If you are a Rust project owner and are looking for contributors, please submit tasks here.

Updates from Rust Core

273 pull requests were merged in the last week

• shrink ParamEnv to 16 bytes
• stabilize const mem::forget
• typeck: adding type information to projection
• clippy: some accuracy lints for floating point operations
• correctly mark the ending span of a match arm
• only allow repr(i128/u128) on enum
• hide &mut self methods from Deref in sidebar if there are no DerefMut impl for the type
• only add CFGuard on windows-msvc targets
• add VecDeque::range* methods
• add read_exact_at and write_all_at to WASI's FileExt
• clippy: new lint: match_like_matches_macro
• Optimize is_ascii for str and [u8]
• arch: added f32 and f64 unaligned stores and loads from avx512f set
• hashbrown: add HashSet::drain_filter method

Rust Compiler Performance Triage

• 2020-07-14. Twelve revisions checked. Zero regressions. One improvement.

Approved RFCs

Changes to Rust follow the Rust RFC (request for comments) process. These are the RFCs that were approved for implementation this week:

No RFCs were approved this week.

Final Comment Period

Every week the team announces the 'final comment period' for RFCs and key PRs which are reaching a decision. Express your opinions now.

RFCs

No RFCs are currently in the final comment period.

Tracking Issues & PRs

• [disposition: merge] Remove trait LengthAtMost32
• [disposition: merge] Stabilize control-flow-guard codegen option
• [disposition: merge] Impl Default for ranges
• [disposition: merge] Tracking issue for core::{f32,f64}::consts::TAU

New RFCs

• Opt-in Stable Trait VTables

Upcoming Events

Online

• July 14. Dallas, TX, US - Dallas Rust - Second Tuesday
• July 16. Turin, IT - Rust Italia - Gruppo di studio di Rust
• July 27 - August 8. Rusty Days Virtual Rust Conference

North America

• July 15. Vancouver, BC, CA - Vancouver Rust - Rust Study/Hack/Hang-out night
• July 27. Durham, NC, US - Triangle Rustaceans - Project Night & Lightning Talks

If you are running a Rust event please add it to the calendar to get it mentioned here. Please remember to add a link to the event too. Email the Rust Community Team for access.

Rust Jobs

• Senior Software Engineer - Backend at LogDNA (Remote, US)
• Senior Security Engineer at LogDNA (Remote, US)
• Rust Engineer at Elektron (Gothenburg, Sweden)
• Open Source Engineer (Remote) at Embark Studios (Stockholm)
• Software Engineer (Remote) at Embark Studios (Stockholm)
• [dutch] Vacature software engineer (Rust / Python) at Dreamsolution (Netherlands)

Tweet us at @ThisWeekInRust to get your job offers listed here!

Quote of the Week

Ownership in Rust is entirely a type system fiction.

— RalfJung

I'm not sure what is meant there. "ownership" in many languages is a very real thing to me.

– and ZiCog on rust-users

Thanks to Stephan Sokolow for the suggestions!

Please submit quotes and vote for next week!

This Week in Rust is edited by: nellshamrell, llogiq, and cdmistman.

Discuss on r/rust