Code review comment for lp:~jelmer/brz/fix-flake8

The attempt to merge lp:~jelmer/brz/fix-flake8 into lp:brz failed. Below is the output from the failed tests.

python-junitxml (https://launchpad.net/pyjunitxml or http://pypi.python.org/pypi/junitxml) is required for this filter.Traceback (most recent call last):
  File "/usr/bin/subunit2junitxml", line 27, in <module>
    from junitxml import JUnitXmlResult
ModuleNotFoundError: No module named 'junitxml'

----------------------------------------------------------------------
Ran 0 tests in 0.026s

OK
brz: warning: some compiled extensions could not be loaded; see ``brz help missing-extensions``
make: Circular doc/en/Makefile <- doc/en/Makefile dependency dropped.