rust-cache action fail cleanup step if runner is out of disk space

[diogomatsubara]

We have a workflow that uses rust-cache. Part of this workflow runs code coverage checks which generate lots of data but don't quite take the whole disk space of the runner. When the time comes to run the post run steps for rust-cache, it fails with a no space left on device error.

See https://github.com/eclipse-zenoh/zenoh/actions/runs/14376847641/job/40376530891?pr=1888#step:13:70

We're trying to solve the issue of generating too much data but I thought I should report this here. Not sure if qualifies a bug in rust-cache action.