Can't filter rewrite warnings

[shaicantor]

Hi,

Part of my code imports the xdist plugin.
As a result I receive

================================================ warnings summary ================================================
/path/to/my/ve/local/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:268: PytestWarning: Module already imported so cannot be rewritten: xdist
  self.config,
/path/to/my/ve/local/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:268: PytestWarning: Module already imported so cannot be rewritten: xdist
  self.config,

-- Docs: https://docs.pytest.org/en/latest/warnings.html

I tried filtering with:

1. -p no:warnings -> no luck
2. --disable-pytest-warnings -> removes the warning but the summary is still yellow
3. @pytest.mark.filterwarnings -> no luck
4. native python warning.filterwarnings -> no luck

How can I filter this specific warning???

pytest version - 3.8.2

[nicoddemus]

Hi @shaicantor, thanks for writing up, looks like a bug.

[blueyed]

btw (maybe necessary here also): pytest-dev/pytest-cov#228

[nicoddemus]

Closing in favor of #6681 (which contains more details).