2026-07-27

Commit: 12c3381
Release: 2026-07-27 (v0.3.2989)

New Features

• #22818 implement lowering of HRTBs.

• #22851 add diagnostic for struct patterns with missing fields.

• #22854 record and show obligation chain for unimplemented trait diagnostics:

  

Performance Improvements

• #22862 shrink hir::Expr from 56 to 48 bytes.
• #22860 pack ExprOrPatId when stored and shrink ScopeData.
• #22587 reduce scope of cache priming.

Fixes

• #22865 (first contribution) respawn proc macro servers after stopping them.
• #22861 record expressions in types in ExprScope.
• #22852 eagerly normalize IntoFuture::Output for await.
• #22849 fix syntax-bridge panic when splitting float.
• #22855 fix InferenceContext:identity_args using the wrong DefId.
• #22857 handle enum variants in next-solver generics.
• #22896 use bool for the guard type in expected type analysis.
• #22881 don't interpret +#[rust_analyzer]+ as #[rust_analyzer::rust_fixture].
• #22918 prefer alloc over std paths when preferNoStd is set.
• #22843 fix panic when adding unknown fields to macro-defined structs.
• #22892 fix merge_imports panic with invalid paths.
• #22919 don't offer replace_qualified_name_with_use on unqualified paths.
• #22924 fix a crash in generic parameter handling.
• #22923 handle cycles in impl_trait_with_diagnostics.
• #22905 attach database to parallel analysis-stats inference workers.
• #22898 add parentheses when required in invert_if.

Internal Improvements

• #22548, #22611 add a few more database lifetimes.
• #22831 migrate HirDatabase and remove #[query_group].
• #22867 merge WherePredicate::ForLifetimes and WherePredicate::TypeBound.
• #22883 add Module::path_segments.
• #22914 clean up support code for pre-1.94 toolchains.

See also the changelog post.