What's New in Rust 1.88 through 1.90
What's New in Rust 1.88 through 1.90  
Podcast: Rustacean Station
Published On: Thu Jan 22 2026
Description: Jon and Ben discuss the highlights of the 1.88 through 1.90 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 Discord: Rustacean Station Github: @rustacean-station Email: hello@rustacean-station.org Timestamps & referenced resources [@00:26] - Rust 1.88 [@00:26] - Let chains The if let temporary scope [@09:09] - Naked functions [@11:55] - Boolean configuration [@14:15] - Cargo automatic cache cleaning [@17:52] - Stabilized APIs [@17:52] - hint::select_unpredictable [@21:16] - ::as_chunks [@22:25] - Default for *const T [@23:13] - HashMap::extract_if [@23:43] - More metadata from Span [@24:48] - Changelog deep-dive [@24:48] - De-stabilize #[bench] [@26:55] - --no-capture [@28:31] - Rust 1.89 [@28:40] - Explicitly inferred arguments to const generics [@30:14] - Mismatched lifetime syntaxes lint [@35:29] - More x86 target features [@36:33] - Cross-compiled doctests [@38:31] - i128 and u128 in extern "C" functions [@40:38] - Demoting x86_64-apple-darwin to Tier 2 Platform support policy [@42:18] - Standards Compliant C ABI on wasm32-unknown-unknown More about the ABI changes [@46:05] - Stabilized APIs [@46:05] - File::lock [@48:34] - Changelog deep-dive [@48:40] - aarch64 frame pointers Why do frame pointers matter? [@49:59] - Allow storing format_args! in variable Behind the scenes of format_args! [@51:38] - rustdoc sidebar on mobile [@52:14] - Rust 1.90 [@52:14] - LLD is now the default linker on x86_64-unknown-linux-gnu PR with lots of linked resources rustc performance diff with lld [@1:01:26] - Cargo adds native support for workspace publishing [@1:03:03] - Stabilized APIs [@1:03:26] - u{n}::saturating_sub_signed [@1:04:20] - Changelog deep-dive [@1:04:20] - home_dir fall back if HOME is set but empty Credits Intro Theme: Aerocity Audio Editing: synchis Hosting Infrastructure: Jon Gjengset Show Notes: Jon Gjengset Hosts: Jon Gjengset and Ben Striegel