- Added numerous language and library features, including derive(Default) on enums, extern linkage for const functions, bool::then, total_cmp for floating‑point types, Stdin::lines, and new From implementations for Rc/Arc.
- Extended Cargo with the `cargo add` command, name@version package ID syntax across add/install/yank, automatic response‑file handling, and marked Cargo home directories as cache; rustdoc now runs doctests on private macros and removed .w...
- Improved platform and tooling support: new tier‑3 aarch64/x86_64 Windows gnullvm targets, several new or stricter lints (e.g., unaligned references now deny by default), and internal performance upgrades like futex‑based Mutex/RwLock and...
Rust 1.62.0
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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.