Better explain --last-failed-no-failures in docs

[nicoddemus]

As discussed in #11346 (comment), the feature could be made clearer in the docs:

https://docs.pytest.org/en/stable/how-to/cache.html#behavior-when-no-tests-failed-in-the-last-run

[seanjedi]

I can work on this if that is ok

[seanjedi]

@nicoddemus
Made a PR here: #11357
Pre-commit may fail cause of these two issues:

• pre-commit failing on mypy hook with at least a 'Module has no attribute "getuid" error' #11343
• pre-commit failing on flake8 hook with undefined name 'EncodingWarning' error #11356

Feel free to let me know if I should make any edits or changes

[nicoddemus]

Hi @seanjedi, as I commented in the PR, the idea is to change the documentation, not the command-line help message. Would appreciate if you give this another go!

[DetachHead]

why not update both?

[nicoddemus]

If we can improve on both certainly!

[seanjedi]

@nicoddemus
As per request from DetachHead, I have updated both and created a PR here: #11361
Let me know if I should make any other changes or improvements, or if my update is too lengthy.

[seanjedi]

@nicoddemus Thanks for the feedback on the PR.
I have updated my changes as of this commit: 75e815f
Feel free to let me know if you have any concerns or changes that I should make.

[nicoddemus]

@seanjedi thanks for the heads up, but there's no need for that, GitHub already notifies me of your new commits to the PR. 😁

[seanjedi]

Ohh whoops lol, thanks for letting me know!

[nicoddemus]

Sure thing!