Rust 1.80.0 pre-release testing

announcements
1

The 1.80.0 pre-release is ready for testing. The release is scheduled for July 25. Release notes can be found here.

You can try it out locally by running:

RUSTUP_DIST_SERVER=https://dev-static.rust-lang.org rustup update stable

The index is https://dev-static.rust-lang.org/dist/2024-07-21/index.html.

The release team is also thinking about changes to our pre-release process: we'd love your feedback on this GitHub issue.

1 Like
2

Not a big issue, but I’m disappointed that diagnostic regression `declare_interior_mutable_const` now fires in macros where it is meant to be allowed · Issue #12951 · rust-lang/rust-clippy · GitHub hasn't been fixed and is going to hit stable in this release.

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3

the code compile error:

#[derive(Debug, Clone, thiserror::Error)]
pub enum Error {
    #[error("error when converting {source:?} to {target:?}")]
    ConvertError {
        source: String,
        target: String,
    },
}

because of source on v1.80.0.

error[E0599]: the method `as_dyn_error` exists for reference `&String`, but its trait bounds were not satisfied
   --> src/error.rs:34:9
    |
34  |         source: String,
    |         ^^^^^^ method cannot be called on `&String` due to unsatisfied trait bounds
4

The Error trait’s source() method is implemented to return whichever field has a #[source] attribute or is named source , if any. This is for identifying the underlying lower level error that caused your error.

from thiserror's docs

5

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