#Rust 1.80 introduces LazyCell and LazyLock for deferred data initialization, enhanced cfg checks in #Cargo 1.80, and exclusive endpoints in ranged patterns. The update also includes stabilized APIs, as well as other changes and bug fixes.
https://alternativeto.net/news/2024/7/rust-1-80-released-with-lazycell-and-lazylock-enhanced-cargo-checks-and-exclusive-endpoints/