Cache exists error

[henryiii]

I love the new v2 action, but I got an odd error when converting a repo to use it:

##[error]reserveCache failed: Cache already exists. Scope: refs/pull/20/merge, Key: pre-commit-2-4774c6dcfb04097f665845795b3fc1fdb61ba523c1c117b1fb248ece52e94408-425ac6cd4cf92651d871380a6d2765229c71084a12c70a488fe9357fa3e198a2, Version: 28cdb9f5496f334116f23e86f0063f5d3a9348c2e22425a33171e071aadada7

The only think I've done differently (that I know of) is I enabled the token, just to see the guidelines in the pre-commit/action readme which say it only works on a private repository really means it only works on PRs from the same repository (which, while not as useful as working on PRs from forks, still would be useful in some cases).

https://github.com/scikit-hep/hepunits/pull/20/checks?check_run_id=950105310

[asottile]

does the error persist on a rerun? iirc there's an unavoidable race on initial cache population

[henryiii]

That could be the problem, then - it was the first run (and I dropped the token and it worked on the second run, so maybe it was just the rerun that fixed it).

[asottile]

nice! yeah there isn't really anything we can do about that sadly

[asottile]

https://pre-commit.ci will at least not have this problem

[bitphage]

Also got this error on a private repo but without additional features enabled. No error after job rerun.