← Back to all releases

Rust 1.99.0 (nightly)

Nightly

Expected on October 1, 2026

Merged Issues

Tracking issue for release notes of #158325: Document NonNull layout guarantees (#159198, 3d ago)
Add Step::forward/backward_overflowing to enable RangeInclusive loop optimizations (#155114, 7d ago)
Implement IntoIterator for [&[mut]] Box<[T; N], A> (#134021, 11d ago)
Tracking issue for release notes of #156976: enable eager param_env norm in new solver (#158528, 13d ago)