What's New in Rust 1.70 and 1.71

Jon and Ben discuss the highlights of the 1.70 and 1.71 releases of Rust.

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Timestamps & referenced resources

[@01:20] - Rust 1.70

• [@01:22] - Cargo’s sparse protocol by default
• [@03:47] - OnceCell and OnceLock
• [@10:56] - IsTerminal
• [@12:49] - Named debug levels
• [@14:57] - Enforced stability in the test CLI
• [@16:45] - Stabilized APIs
  • Add Default impls for iterators
  • Arc::into_inner
  • Option::is_some_and
  • SocketAddrExt
• [@24:30] - Changelog deep-dive
  • [@24:42] - Use SipHash-1-3 instead of 2-4
  • [@26:06] - Alignment debug checks for pointer derefs
  • [@27:04] - Relaxed ordering for asm! operands
  • [@27:53] - -Zgitoxide
  • [@28:21] - -Zdirect-minimal-versions

[@29:16] - Rust 1.71.0

• [@29:25] - C-unwind ABI
  • RFC
  • Unwinding by default?
• [@36:59] - Debugger visualization attributes
  • Detailed documentation
• [@37:36] - raw-dylib linking
  • Windows linking docs
  • What is ordinal linking
• [@38:15] - Upgrade to musl 1.2
• [@39:42] - Const-initialized thread locals
• [@41:14] - Changelog deep-dive
  • [@41:40] - Uplift drop_ref clippy lints
  • [@42:39] - Allow some recursive panics
  • [@43:57] - Optimize cargo under rustup
  • [@45:38] - Avoid excessive registry lookups
  • [@46:28] - Include rust-version in publish
  • [@47:02] - Document more semver rules
    • Adding #[non_exhausting]
    • Making an fn safe
    • MSRV is a minor bump

Credits

Intro Theme: Aerocity

Audio Editing: Aerocity

Hosting Infrastructure: Jon Gjengset

Show Notes: Jon Gjengset

Hosts: Jon Gjengset and Ben Striegel