Support Rust 2024 edition (Dependabot's Rust version is too old)

[edmorley]

Is there an existing issue for this?

• I have searched the existing issues

Feature description

We switched our project to use the new Rust 2024 edition (edition = "2024" in Cargo.toml), however, Dependabot is now failing with:

updater | 2025/02/27 18:59:08 INFO <job_971756424> Handled error whilst updating ureq: dependency_file_not_resolvable {:message=>"error: failed to parse manifest at `dependabot_tmp_dir/Cargo.toml`\n\nCaused by:\n  feature `edition2024` is required\n\n  The package requires the Cargo feature called `edition2024`, but that feature is not stabilized in this version of Cargo (1.82.0 (8f40fc59f 2024-08-21)).\n  Consider trying a newer version of Cargo (this may require the nightly release).\n  See https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#edition-2024 for more information about the status of this feature."}

Specifically:

The package requires the Cargo feature called edition2024, but that feature is not stabilized in this version of Cargo (1.82.0 (8f40fc59f 2024-08-21)). Consider trying a newer version of Cargo

It looks like the Dependabot image is using an out of date version of Rust (1.82.0)?

The latest version (and the first to support 2024 edition) is 1.85.0.

Please could you upgrade the Rust version in the Dependabot image?

See:
https://blog.rust-lang.org/2025/02/20/Rust-1.85.0.html

[edmorley]

Ah PR #11662 is open for upgrading Rust.

[robaiken]

We have updated to Rust 1.8.5 in the previously mentioned pr #11662. Thank you for your report!

[edmorley]

Thank you!