Unrecognized arguments using pytest with python3.8-dev

[rllola]

Recently the pytest call using travis CI broke with python 3.8 dev

See : https://travis-ci.org/HelloZeroNet/ZeroNet/jobs/553544808

Log says :

pytest.py: error: unrecognized arguments: -rsxX
  inifile: /home/travis/build/HelloZeroNet/ZeroNet/plugins/CryptMessage/Test/pytest.ini
  rootdir: /home/travis/build/HelloZeroNet/ZeroNet/plugins/CryptMessage/Test

pytest.ini

[pytest]
python_files = Test*.py
addopts = -rsxX -v --durations=6
markers =
    webtest: mark a test as a webtest.

It only breaks with python 3.8

Something seems to have changed but cant really tell what....

[nicoddemus]

Hi @Bjwebb,

Duplicate of #5523, will be fixed in 5.0.1; meanwhile a workaround is to use -r sxX instead.

(I'm pinning #5523 so it is more visible)