It seems like our custom markers defined in

pytest.ini

are sometimes getting ignored by pants and pants is complaining that the markers aren't defined. Not sure how best to reproduce at the moment. I just did a whole run pointing to the problem test with

./pants --no-local-cache path/to/my/marked_test.py

and pytest didn't complain. However, on our build system, I've noticed a few times now where it does complain about the marker being undefined.