What's New in Rust 1.54 and 1.55

Jon and Ben discuss the highlights of the 1.54 and 1.55 releases of Rust.

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Timestamps & referenced resources

[@00:37] - Rust 1.54

• [@00:55] - Attributes can invoke function-like macros
  • The doc attribute
• [@04:04] - wasm32 intrinsics stabilized
  • std::intrinsics
  • Target families
• [@06:59] - Incremental compilation is re-enabled by default
  • Rust 1.52.1 disables incremental compilation
  • Incremental compilation issues tracking issue
• [@08:55] - Stabilized APIs
• [@11:00] - Changelog deep-div
  • [@11:04] - cargo report and future incompatibility lints
  • [@14:12] - LLVM mutable noalias is on again
  • [@16:24] - CARGO_TARGET_TMPDIR
  • [@17:24] - Use semver 1.0
    • Checking semver 1.0 against crates.io

[@19:18] - Rust 1.55

• [@19:26] - Cargo deduplicates compiler errors
• [@20:24] - Faster, more correct float parsing
  • The PR
  • Reddit post with details
• [@22:20] - io::ErrorKind variants updates
• [@28:08] - Open range patterns added
• [@29:44] - Stabilized APIs
  • [@29:44] - MaybeUninit
  • [@32:44] - ops::ControlFlow
    • Try trait (v2) RFC
  • [@35:59] - string::Drain::as_str
• [@37:52] - Changelog deep-dive
  • [@38:08] - Build scripts informed about rustc configuration
  • [@38:38] - cargo clippy --fix
  • [@39:10] - Clippy lint override survey
  • [@40:07] - #[doc(hidden)] on trait implementations

Credits

Intro Theme: Aerocity

Audio Editing: Jeremy Jung

Hosting Infrastructure: Jon Gjengset

Show Notes: Jon Gjengset

Hosts: Jon Gjengset and Ben Striegel

Transcript: Eric Seppanen