Announcing Rust 1.89.0 | Rust Blog
The Rust team is happy to announce a new version of Rust, 1.89.0. Rust is a programming language empowering everyone to build reliable and efficient software.
If you don't have it already, you can get rustup from the appropriate page on our website, and check out the detailed release notes for 1.89.0.
If you'd like to help us out by testing future releases, you might consider updating locally to use the beta channel (rustup default beta) or the nightly channel (rustup default nightly). Please report any bugs you might come across!
Similar to the rules for when _ is permitted as a type, _ is not permitted as an argument to const generics when in a signature:
Lifetime elision in function signatures is an ergonomic aspect of the Rust language, but it can also be a stumbling point for newcomers and experts alike. This is especially true when lifetimes are inferred in types where it isn't syntactically obvious that a lifetime is even present:
We first attempted to improve this situation back in 2018 as part of the rust_2018_idioms lint group, but strong feedback about the elided_lifetimes_in_paths lint showed that it was too blunt of a hammer as it warns about lifetimes which don't matter to understand the function:
