[BUG] 15.0.1 breaks `click.testing.CliRunner` run from `pytest` with `pytest-xdist`

[ITProKyle]

My application updated from 15.0.0 to 15.0.1 via a dependabot PR earlier today. This resulted in click.testing.CliRunner raising ValueError: I/O operation on closed file. (logs) in our tests. I would assume the closed file it is referring to is sys.stderr.

Reverting back to 15.0.0 results in the tests passing (rackspace/runway#667).

[ITProKyle]

This looks to have been resolved somewhere along the line. Tested with coloredlogs==15.0.1 & click==8.1.3.

[ITProKyle]

Actually, i was wrong. I was checking without the --log-cli-format & --log-cli-level flags for pytest locally but upon pushing my most recent changes the error was present as the CI/CD pipeline passes those flags.