Cache always misses for hidden directories

I’ve noticed that in one of my private repos, the cache is never hit even though the cache is small and at the end of each run it says it successfully saved.

Cache not found for input keys: Linux-eslint-e2e650427648991b0a4acaf9d0a8af37ce90a05d, Linux-eslint-.

Post job cleanup.
/bin/tar -cz -f /home/runner/work/_temp/random-hash/cache.tgz -C /home/runner/work/myproject/myproject/.cache/eslint .
Cache saved successfully

Here’s the workflow step:

- name: cache eslint
  uses: actions/cache@v1
  with:
    path: ./.cache/eslint
    key: ${{ runner.os }}-eslint-${{ github.sha }}
    restore-keys: |
      ${{ runner.os }}-eslint-

Are there any reasons for this? I’m assuming caching isn’t supported in free-tier private repos yet but I haven’t seen that anywhere in the documentation.

[jahed]

That would make sense. It would be nice to be able to download caches on our end in order to debug runs and see what’s being restored.

[jahed]

I’ve figured it out after hours. 😫

For some reason, actions/cache does not like hidden directories being cached. That is, .cache in my case. It’s okay with zipping up and saving them, but the restore always 204s (no content).

Renaming .cache to just cache or something else fixes it. But I guess this is a bug likely in the backend since the POST goes through fine with the correct size.

EDIT: I had some issues with hidden files too, but might be unrelated to this.