What's New in Rust 1.85 through 1.87

Jon and Ben discuss the highlights of the 1.85 through 1.88 releases of Rust.

Contributing to Rustacean Station

Rustacean Station is a community project; get in touch with us if you’d like to suggest an idea for an episode or offer your services as a host or audio editor!

• Twitter: @rustaceanfm
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• Github: @rustacean-station
• Email: [email protected]

Timestamps & referenced resources

[@01:11] - Rust 1.85

• [@02:05] - async closures
  • RFC 3668
  • Stabilization report
• [@07:45] - Hiding trait implementations from diagnostics
• [@09:43] - FromIterator and Extend for tuples
• [@12:10] - Updates to std::env::home_dir()
  • Deprecation discussion
  • Deprecation PR
  • Originally abandoned fix
  • Undeprecation
• [@15:19] - Stabilized APIs
  • [@15:30] - number::midpoint
  • [@16:18] - Waker::noop
  • [@17:49] - ptr::fn_addr_eq
• [@20:10] - Changelog deep-dive
  • [@20:10] - De-duplicate and improve definition of c_char
  • [@22:56] - More constification
• [@23:51] - Rust 1.85.1

[@24:46] - Rust 1.86

• [@25:24] - Trait upcasting
• [@30:49] - HashMaps and slices now support indexing multiple elements mutably
• [@33:50] - Allow safe functions to be marked with the #[target_feature] attribute
• [@36:21] - Debug assertions that pointers are non-null when required for soundness
• [@39:48] - Make missing_abi lint warn by default
• [@40:55] - Target deprecation warning for 1.87.0
• [@42:25] - Stabilized APIs
  • [@42:25] - {float}::next_up
  • [@44:55] - Vec::pop_if
• [@46:41] - Changelog deep-dive
  • [@46:41] - Changing -O to opt-level=3
  • [@47:47] - Optimized rustc binaries for aarch64
  • [@49:04] - Deprecate cargo --token
  • [@49:43] - No more “did you mean” in Cargo
  • [@50:14] - Sans-serif in rustdoc

[@50:45] - Rust 1.87

• [@51:27] - Anonymous pipes
• [@53:06] - Safe architecture intrinsics
  • Update the standard library to Rust 2024
• [@55:00] - asm! jumps to Rust code
• [@57:06] - Precise capturing in impl Trait in trait definitions
  • The Captures “trick”
  • Talk on impl Trait
• [@58:45] - Stabilized APIs
  • [@58:45] - Vec::extract_if
  • [@1:00:13] - <[T]>::split_off
  • [@1:01:47] - OsStr::display
  • [@1:03:40] - <uN>::cast_signed
  • [@1:04:41] - <uN>::is_multiple_of
  • [@1:05:31] - <uN>::unbounded_shl
  • [@1:06:20] - TryFrom<Vec<u8>> for String
  • [@1:06:46] - Box<MaybeUninit<T>>::write
  • [@1:08:23] - String::extend_from_within
• [@1:07:46] - Changelog deep-dive
  • [@1:07:46] - Actually un-deprecate home_dir
  • [@1:10:41] - Cargo SBOM support (RFC 3553)
  • [@1:11:48] - More Cargo ANSI sequences

Credits

Intro Theme: Aerocity

Audio Editing: synchis

Hosting Infrastructure: Jon Gjengset

Show Notes: Jon Gjengset

Hosts: Jon Gjengset and Ben Striegel