Rust周报 385(译)

• this-week-in-rust
• 日期：2021-04-07
• 原文：385 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

本周没有论文/研究项目。

Official

• [Inside] core team updates
• [Foundation] introducing peixin hou
• [Foundation] introducing florian gilcher

Newsletters

• This Month in Rust OSDev (March 2021)
• RiB Newsletter #22 - A few tweaks

Project/Tooling Updates

• GCC Rust Monthly Report #4 March 2021
• mrustc upgrade: rustc 1.39.0
• rust-analyzer Changelog #71
• A new Left Recursive PEG Parser Generator for rust
• Last Month in Flott (Motion Control Toolkit in Rust) - April 2021
• Recent updates in IntelliJ Rust
• Bevy 0.5

Observations/Thoughts

• 将一个底层 actor system ，接口化 Rust async/await, part 1
• A Tour of Safe Tracing GC Designs in Rust
• How I Used Rust + Lunatic to Build a TelNet Chat Server with WebAssembly
• Eliminating Data Races in Firefox - 技术报告
• First-class IO
• The modern packager’s 安全噩梦
• Ordering Requests 去加速 I/O
• 检查异常小文章 in Rust
• 奇怪架构就不应开始
• [video] I tried learning OpenGL in 7 days - using Rust

Rust Walkthroughs

• How we built our Python Client that’s mostly Rust
• Hello world with KAS GUI
• How to create small Docker images for Rust
• Oxidizing the Kubernetes Operator
• Sending tuples from Node to Rust and back
• Getting started with Kafka and Rust: Part 1
• A Beginner’s Guide to Handling Errors in Rust
• Using Seahorn
• Asynchronous streams in Rust (part 1) - Futures, buffering 和神秘的编译错误信息
• [series] what would sqlite look like if written in rust? — part 3
• [video] return a value from a function in rust
• [video] crust of rust: atomics and memory ordering
• [video] async/await in rust: introduction
• [video] openvehiclediag rust live coding with macchina’s a0!!
• [video] [series] Easy Rust - learn to program in Rust with simple English

Miscellaneous

• best-of-ml-rust: A ranked list of awesome machine learning Rust libraries
• Rust in the Android platform
• David Tolnay - thank you
• My “shiny future”

Crate of the Week

这周的箱子是rs-pbrt，与 PBRT 那本书（第 3 版）的 C ++代码相对应。

谢谢Jan Walter的建议！

提交您下周的建议和投票！

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 Rust 社区中的一些任务，供您选择和开始！

其中一些任务也可能有导师，请访问任务页面以获取更多信息。

• dotenv-linter has several good first issues

如果您是 Rust 项目的所有者并且正在寻找贡献者，请提交任务这里。

Updates from Rust Core

共有 313 个拉取请求在上周合并

• 修复 stack overflow detection on FreeBSD 11.1+
• 不允许 the use of high byte registes as operands on x86_64
• resolve/expand: 缓存 intermediate results of #[derive] expansion
• 尽早 panic， 当 TrustedLen 检查出 length > usize::MAX
• 建议 box/pin/arcing receiver on method calls
• 在 optimization passes 之前，运行 LLVM coverage instrumentation passes
• 简化 logical operations CFG
• 移除 unneeded type resolving
• unaligned_references: align(N) fields in packed(N) structs are fine
• 防止非常久的编译运行时 in LateBoundRegionNameCollector
• 减少，那么没有任何分配的 Vec::reserve calls 的影响
• BTree: 不再两次 search arrays，to check Ord
• stream the dep-graph to a file，而不是 storing it in-memory
• implement SourceIterator and InPlaceIterable for ResultShunt
• optimize jumps in PartialOrd::le
• ffi::c_str removed bound checks on as_bytes, to_bytes
• added as_slice method to BinaryHeap collection
• use #[inline(always)] on trivial UnsafeCell methods
• add #[inline] to IpAddr methods
• 不允许 octal format in Ipv4 string
• constify methods of std::net::SocketAddr, SocketAddrV4 and SocketAddrV6
• constify some slice methods
• stdsimd: add saturating abs/neg
• hashbrown: make RawTable::insert_no_grow unsafe
• cargo: add cargo config subcommand
• rustdoc: only look at blanket impls in get_blanket_impls
• rustdoc: add unstable option to only emit shared/crate-specific files
• rustdoc: don’t enter an infer_ctxt in get_blanket_impls for impls that aren’t blanket impls
• rustdoc: highlight macros more efficiently
• clippy: add non_octal_unix_permissions lint
• clippy: don’t lint manual_map in const functions
• clippy: new Lint: needless_for_each
• clippy: new Lint: branches_sharing_code
• clippy: lint: filter(Option::is_some).map(Option::unwrap)
• clippy: remove author requirement for cargo_common_metadata
• Clippy going dark: adding a dark theme to Clippy’s lint list
• crates.io: topologically sort db-dump.tar.gz
• parallelize tidy

Rust Compiler Performance Triage

相当重要的一周内存使用情况的改进，由于使用的默认分配器（更新为最新的 jemalloc）的更新，发布版本的内存使用平均增加了约 20％，而检查版本的内存使用平均增加了 5％。总计时间的表现，在本周基本保持不变。

整理由 @simulacrum。修订范围：4896450e..d32238

1 个退步，4 个改进，0 个混合

Approved RFCs

对 Rust 的更改跟随 RustRFC (request for comments) process。以下是本周批准实施的 RFC：

• RFC: Declarative macro metavariable expressions

Final Comment Period

每周the team宣布即将做出决定的 RFC 和主要 PR 的“最终意见征询期”。立即发表您的意见。

RFCs

• [disposition: close] RFC: Structural Records
• [disposition: postpone] Hygiene opt-out (escaping) for declarative macros 2.0
• [disposition: postpone] RFC: Delegation
• [disposition: close] RFC: #[derive_no_bound(..)] and #[derive_field_bound(..)]
• [disposition: postpone] RFC: Eager Macro Expansion
• \[disposition: merge] try_trait_v2: A new design for the ? desugaring

Tracking Issues & PRs

• [disposition: merge] Remove T: Debug bound on UnsafeCell Debug impl
• [disposition: merge] Turn old edition lint (anonymous-parameters) into warn-by-default on 2015
• [disposition: merge] Stabilize rustdoc::bare_urls lint
• [disposition: merge] 跟踪问题: fNN::is_subnormal
• [disposition: merge] 跟踪问题： feature(nonzero_leading_trailing_zeros)
• [disposition: merge] 跟踪问题： {BTreeMap,BTreeSet}::retain
• [disposition: merge] 跟踪问题： #![feature(const_cell_into_inner)]
• [disposition: merge] 跟踪问题： atomic_fetch_update
• [disposition: merge] 跟踪问题： feature: “option_insert”
• [disposition: merge] 跟踪问题： Duration saturating operations
• [disposition: merge] 跟踪问题： Duration::{zero, is_zero} (#![feature(duration_zero)])
• [disposition: close] 跟踪问题： FixedSizeArray trait

New RFCs

• RFC: Reserved prefixes in the 2021 edition

Quote of the Week

可悲的是，本周没有引用。

Please submit quotes and vote for next week!

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

Discuss on r/rust