`crates_vendor` fails when running on Github Actions with a 1.85 toolchain

[redsun82]

Using latest rules_rust (0.57.1) I'm seeing the crates_vendor target failing when a 1.85 toolchain is selected. Weirdly enough, I'm not able to reproduce this locally, where the target runs without issues, but I can see it happening on Github Actions CI 100% of the time, and on all platforms.

A small reproducer is available in redsun82/test#2. If you look at commits, you can see that using the default (1.84) toolchain in redsun82/test@07d0340 runs ok and then when switching to a 1.85 toolchain in redsun82/test@ce0b879 the run fails with

Error: Failed to get crate index config

Caused by:
    No such file or directory (os error 2)

I will try a workaround switching to a 1.84 toolchain when running this vendoring check on CI in our internal repository where I discovered this.

[redsun82]

Unfortunately, the workaround is not feasible, as one of my dependencies requires edition 2024 and therefore rust 1.85. I may have to temporarily turn off the vendoring check, relying on developers being diligent in keeping them up-to-date.

[ericmcbride]

I am getting this without having vendoring enabled. I was able to test out a fix i made last release and it all worked fine.

[UebelAndre]

Can you try updating to 0.58.0? This seems related to #3251 which is included in 0.58.0

[redsun82]

Indeed version 0.58.0 has fixed this, thanks!

This run https://github.com/redsun82/test/actions/runs/13836135750/job/38711498092?pr=2 shows a success in my reproducer after I bumped rules_rust's version.