What's New in Rust 1.72 and 1.73

Jon and Ben discuss the highlights of the 1.72 and 1.73 releases of Rust.

This episode was recorded as part of a YouTube live stream on 2024-05-18, which you can still watch.

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Timestamps & referenced resources

[@03:49] - Rust 1.72.0

• [@04:24] - Report cfg-hidden items
• [@08:49] - Unlimited const evaluation time
  • The 2M limit
• [@12:52] - Uplifted clippy lints
• [@16:53] - Stabilized APIs
  • impl Sync for mpsc::Sender
  • String::leak
    • ACP for String::leak
    • PR filed live
• [@25:46] - Future Windows compatibility
• [@26:20] - Changelog deep-dive
  • [@26:38] - -O -
  • [@27:43] - Rustdoc search
    • Whitespace as path separator
    • Search for slices and arrays
  • [@30:58] - Cargo will bail if build script uses cargo:: (actually in 1.73)
  • [@34:13] - Cargo if workspace uses old resolver
  • [@35:12] - cargo-add will better preserve Cargo.toml
  • [@36:11] - rustfmt let-else
  • [@37:49] - cargo -Zscript

[@41:05] - Rust 1.72.1

[@43:37] - Rust 1.73.0

• [@43:45] - Cleaner panic messages
• [@46:58] - Thread local initialization
• [@51:12] - Stabilized APIs
  • {integer}::next_multiple_of
• [@54:53] - Changelog deep-dive
  • [@55:00] - Unconditional recursion in drop
  • [@56:04] - Write Rust’s version into .comment section
    • Embed dependency versions into binary with cargo-sbom
  • [@58:30] - I/O traits for Arc<File>
  • [@59:34] - Make cargo --help easier to browse
  • [@1:03:01] - Merge io::Sink into io::Empty
  • [@1:05:11] - impl SliceIndex<str> for (Bound<usize>, Bound<usize>)

Credits

Intro Theme: Aerocity

Audio Editing: Aerocity

Hosting Infrastructure: Jon Gjengset

Show Notes: Jon Gjengset

Hosts: Jon Gjengset and Ben Striegel