Step “host” fails in CI for rust edition 2024

[jan-ferdinand]

When trying to create binaries using the fresh-off-the-press rust edition 2024, CI fails during step dist host. Apparently, the rust version in use is 1.84.1 (checksum 66221abde, release date 2024-11-19), which won't work for rust edition 2024. Could it be that the artifact that's loaded during step Install cached dist is out of date?

Locally, dist plan, dist build, and dist host all succeed.

[dkorunic]

Same issue here. Easy fix for this is to manually specify toolchain in rust-toolchain.toml for your project, for instance as follows:

[toolchain]
channel = "1.85.0"

[graemer957]

Thanks, @dkorunic that fixed it for me https://github.com/mainmatter/rust-workshop-runner/pull/19/commits/5d54cc893d5c557ce50dcea25eb4a102d37afaec 👍🏻

[jan-ferdinand]

manually specify toolchain in toolchain.toml

Minor detail: it's rust-toolchain.toml. (See also.) Thanks for the workaround. 🙂

[gtema]

sadly the workaround is not suitable for me since I also depend on nightly for fuzzung, so creating overrides of overrides is just sad

[jan-ferdinand]

@gtema, you might be able to use a custom build step and the RUSTUP_TOOLCHAIN environment variable described here.

(See also this toy repo making use of a custom build step to set an environment variable (albeit a different one). The specifc places to look at are here and here. In this comment, I list a small number of gottchas when using dist's custom build steps.)