What's New in Rust 1.60 and 1.61

Jon and Ben discuss the highlights of the 1.60 and 1.61 releases of Rust.

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Timestamps & referenced resources

[@01:15] - Rust 1.60

• [@01:45] - Source-Based Code Coverage
  • -Cinstrument-coverage documentation
  • grcov
  • cargo-llvm-cov
• [@08:21] - cargo --timings
  • Example output for Cargo build
  • Cargo documentation
• [@10:21] - New syntax for Cargo features
  • Optional dependencies
  • Dependency features
• [@17:06] - Incremental compilation status
  • Incremental disabled in 1.59
• [@20:06] - Instant monotonicity guarantees
  • “And now we come upon a sad state of affairs”
  • PR moving from Mutex to AtomicU64
  • PR removing backsliding protection
• [@26:01] - Stabilized APIs
  • Arc::new_cyclic
    • Source for Arc::new_cyclic
  • <[u8]>::escape_ascii
  • usize::abs_diff
• [@32:27] - Changelog deep-dive
  • Stabilize #[cfg(panic = "..")]
  • Port cargo from toml-rs to toml_edit
    • toml_edit crate
  • Adding OpenWRT target
    • OpenWRT

[@36:59] - Rust 1.61

• [@36:59] - Custom exit codes from main
  • Termination
  • ExitCode
  • Why ExitCode is opaque
  • try_trait_v2
• [@45:05] - More capabilities for const fn
  • Meta tracking issue for const fn
• [@52:20] - Static handles for locked stdio
  • Stdout::lock
• [@54:33] - Stabilized APIs
  • Vec::retain_mut
  • <*const T>::offset
• [@59:22] - Changelog deep-dive
  • std::thread::available_parallelism
    • Respecting Linux cgroups
    • Cargo dropping num_cpus
  • Sparse registries RFC
    • Implementation
    • Call for testing
  • Linux baseline requirements bump
    • Likely landing in 1.64
  • Compatibility Notes
  • #[ignore = ".."]
  • Removing “everybody loops”
    • When rustdoc stopped looping everybody

[@1:12:55] - Rust 2024 Roadmap

• Living roadmap

Credits

Intro Theme: Aerocity

Audio Editing: Aerocity

Hosting Infrastructure: Jon Gjengset

Show Notes: Jon Gjengset

Hosts: Jon Gjengset and Ben Striegel