- Stabilized numerous language features and added many new standard library APIs (e.g., s390x vector targets, C‑style variadic functions, const‑eval pointer copying, and extensive MaybeUninit/slice methods).
- Removed unsound specialization on the Copy trait, enabled TLS for the global allocator, updated BTree::append semantics, renamed the Cjump tables flag, and promoted riscv64a23‑unknown‑linux‑gnu to Tier 2 support.
- Introduced breaking compatibility changes: changed the Emscripten unwind ABI, made misuse of the #[test] attribute an error, tightened Cargo’s CARGO_CFG_DEBUG_ASSERTIONS handling, and added stricter rustdoc attribute validation and searc...
Rust 1.93.0
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Language: allow shortening lifetimes of &mut during unsize coercions and introduce new lints for invalid runtime symbols and c void return types.