Rust周报 395(译)

• this-week-in-rust
• 日期：2021-06-16
• 原文：395 期

你好，欢迎再来一期本周的螃蟹行情！Rust是一种追求三位一体的系统语言：安全性、并发性和速度。这是它的进展和社区的每周总结。有什么要说的吗？推特@ThisWeekInRust或向我们发送请求。 想参与吗？我们热爱贡献.

这本周的螃蟹行情是在在 Github 上公开的。如果你在本周的问题中发现任何错误，请提交 PR。

Updates from Rust Community

强调

主题：自杀，心理健康

哀悼 Rust 社区中，某人的去世。这是一个非常敏感的话题，很难真正为人命的损失伸张正义。我们能做的最重要的事情是提高人们对心理健康的认识。

如果您或您认识的人需要自杀预防热线，请访问https://www.opencounseling.com/suicide-hotlines获取您所在国家/地区的紧急情况和预防自杀热线电话号码。

Open Source and Mental Health

Official

• [Inside] 1.53.0 pre-release testing
• [Inside] please welcome boxy, léo lanteri thauvin and the8472 to compiler-contributors

Newsletters

• This Month in Rust GameDev #22 - May 2021

Project/Tooling Updates

• rust-analyzer Changelog #81
• AWS-SDK-Rust: CloudFormation, SageMaker, EC2, and SES
• Announcing Aya
• This Week In TensorBase 7
• Introducing cap-std, a capability-based version of the Rust standard library
• Wasmer 2.0, it’s a big deal!
• New crate announcement, iterate
• ripgrep 13.0.0 release

Observations/Thoughts

• A few thoughts on Fuchsia security
• On using Rust to implement shell history search/sync (interview with Ellie Huxtable)
• Visualizing memory management in Rust
• [audio] using rust with flutter

Rust Walkthroughs

• Embedded-Rust: Build & Flash binary to STM32F3DISCOVERY
• Learning to Fly: Let’s simulate evolution in Rust! (pt 4)
• Baby’s first Rust with extra steps (XPC, launchd, and FFI)!
• 加速 WebCola Graph Viz Library with Rust + WebAssembly
• From NAND to Raytracer: Raytracing on the Hack computer (feat. Rust)
• Cacao: Building macOS (and iOS) Apps in Rust
• Build an API in Rust (Part 1)
• Learn to Build a Parser in Rust for Fun and Profit
• Beginner’s Guide to Running Rust on AWS Lambda
• A Command Line Key-Value Data Store using the Rust Programming Language.
• How to use casbin(访问控制模型库) authorization in your rust web-app (part 3)
• 3 到 10 倍地加速输入信息的解析 by switching from serde to the nom library
• [ZH] [series] Build front-end web apps with Yew and WebAssembly in Rust -part 3: Assets & Refactor (Rust 和 Wasm 的融合，使用 yew 构建 web 前端（3）- 资源文件及小重构)
• [ZH] [series] Build front-end web apps with Yew and WebAssembly in Rust -part 4: GraphQL data & Parsing (Rust 和 Wasm 的融合，使用 yew 构建 web 前端（4）- 获取 GraphQL 数据并解析)
• [video] building a web application with rust - part 1 - configuration
• [video] building a web application with rust - part 2 - database setup
• [video] lock-free to wait-free simulation in rust (part 2)

Research

Miscellaneous

• Meet the Rustaceans: A series of interviews with Facebook Rust engineers
• Pop!_OS uses a lot of Rust
• [video] keynote: bryan cantrill - hardware/software co-design: the coming golden age

Crate of the Week

本周有两个箱子：nativeshell为您提供 Rust 中的 Flutter 应用程序，而static-rc是一个编译时，引用计数的智能指针。

谢谢Zicklag两个提名

Submit your suggestions and votes for next week！

Call for Participation

一直想为开源项目做贡献但不知道从哪里开始？每周我们都会重点介绍来自 Rust 社区的一些任务，供您挑选并开始使用！

其中一些任务可能还有可用的导师，请访问任务页面了解更多信息。

• boa-dev/boa has some good first issues
• softprops/shiplift - We have too many unwrap() calls in the codebase

如果您是 Rust 项目所有者，并且正在寻找贡献者，请提交任务here.

Updates from Rust Core

289 个拉取请求是merged in the last week

• fix force-warns to allow dashes
• suggest a trailing comma if a 1-tuple is expected and a parenthesized expression is found
• do not suggest to add type annotations for unnameable types
• to_digit simplification (less jumps)
• multiple improvements to RwLocks
• add Ipv6Addr::is_unicast
• stabilize wasm simd intrinsics
• stabilize maybe_uninit_ref
• stabilize simd_x86_bittest
• cargo: implement warning for ignored trailing arguments
• clippy: fix while_let_on_iterator suggestion in a closure
• clippy: remove requirement of fully qualified path for disallowed_method/type
• clippy: fix false positive on semicolon_if_nothing_returned
• clippy: fix false positive in default_numeric_fallback with external macro expansion
• clippy: Vec extend to append
• BPF target support
• support for force-warns
• improve debugging experience for enums on windows-msvc
• parser: ensure that all nonterminals have tokens after parsing
• don’t suggest unsized indirection in where-clauses
• rustc: allow safe #[target_feature] on wasm
• always go through the expn_that_defined query
• perf: miscellaneous inlining improvements
• perf: only compute the trait map once
• stabilize vecdeque_binary_search
• update standard library for IntoIterator implementation of arrays
• clippy: don’t warn about cfg!(..) as a constant in assertions
• clippy: fix needless_collect with binding shadowing
• clippy: add lint manual_str_repeat

Rust Compiler Performance Triage

一些很好的改进，和一些退步。没有大的变化。

分流完成**@simulacrum**.修订范围：1160cf..a50d721

3 个退步，3 个改进，1 个混合；其中 1 个在汇总中

Full report here.

Approved RFCs

Rust 的变化遵循 RustRFC (request for comments) process.这些是本周批准实施的 RFC：

本周没有 RFC 获得批准。

Final Comment Period

每周the team宣布正在达成决定的 RFC 和关键 PR 的“最终评论期”。现在就发表你的意见。

RFCs

• [disposition: close] Add the boxed!() macro to “de-magic” box syntax

Tracking Issues & PRs

• [disposition: merge] Stabilize span_open() and span_close().
• [disposition: merge] Redefine ErrorKind::Other and stop using it in std.
• [disposition: merge] When using process::Command on Windows, environment variable names must be case-preserving but case-insensitive
• [disposition: merge] Ignore derived Clone and Debug implementations during dead code analysis
• [disposition: merge] Support forwarding caller location through trait object method call
• [disposition: merge] Tracking issue for ops::Bound::cloned()

New RFCs

• RFC: fallible-allocation
• Cargo alternative registry auth

Quote of the Week

• 若是说手动管理内存就是拿着一把枪, 那么 the borrow checker 就是那个自动的保险栓，它可以防止你对着自己时走火。但它是粗糙的,并在谨慎方面犯了错误; 它假装您的脚模就在它规定的矩形框内，而不是详细的 3D 网格。如果你 真的 想，试试’瞄准脚趾之间，而不打到自己' (例如, “此函数返回的值，必须在不超过 15 次连续调用此函数的情况下，保持活动状态”), 那么 unsafe 你可以尝试一下，但借用检查器的内置规则不够细化，无法帮助你, 尽管如此，如果你不小心，在声明之前，把手放在前面，它仍然会阻止你.

– infogulch on Hacker News

Thanks to StyMaar for the suggestion!

Please submit quotes and vote for next week!

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

Discuss on r/rust