Puma runs several workflow files, and there is overlap between the Ruby versions. For example, Ruby head is used in both the Puma CI workflow and a workflow that tests with turbo-rails. The turbo-rails workflow installs Rails.

Recently I noticed logs for the CI run loading a 'close key' match cache, and it logged removing all the Rails gems. Or, with multiple jobs with matching Ruby vesions, the cache may have .misses'.

I added more info to the key with cache-version (see https://github.com/puma/puma/pull/3726/files), but there might be a better way.

Not sure if anyone else has run into this issue.