Investigate win failures

[nicoddemus]

No description provided.

[nicoddemus]

Strange, the failure is happening due to some atexit-registered function raising an exception:

Error in atexit._run_exitfuncs:
Traceback (most recent call last):
  File "d:\a\1\s\.tox\py37-twisted-numpy\lib\ntpath.py", line 562, in relpath
    path_drive, start_drive))
ValueError: path is on mount 'D:', start on mount 'C:'

I've commented the only place where pytest registers a function, but the error still happens. I suspect this is caused because the project is cloned and executed from D:, but the temporary directory is located in C:... not sure what else to try though, ideas welcome.

[asottile]

the python 2 failure seems to be much more helpful:

E         -  'Traceback (most recent call last):',
E         -  '  File "C:\\hostedtoolcache\\windows\\Python\\2.7.16\\x64\\Lib\\atexit.py", line 24, in _run_exitfuncs',
E         -  '    func(*targs, **kargs)',
E         -  '  File "d:\\a\\1\\s\\.tox\\py27-lsof-nobyte-numpy\\lib\\site-packages\\coverage\\control.py", line 525, in _atexit',
E         -  '    self.stop()',
E         -  '  File "d:\\a\\1\\s\\.tox\\py27-lsof-nobyte-numpy\\lib\\site-packages\\coverage\\control.py", line 613, in save',
E         -  '    data = self.get_data()',
E         -  '  File "d:\\a\\1\\s\\.tox\\py27-lsof-nobyte-numpy\\lib\\site-packages\\coverage\\control.py", line 667, in get_data',
E         -  '    if self._collector and self._collector.flush_data():',
E         -  '  File "d:\\a\\1\\s\\.tox\\py27-lsof-nobyte-numpy\\lib\\site-packages\\coverage\\collector.py", line 427, in flush_data',
E         -  '    self.covdata.add_arcs(self.mapped_file_dict(self.data))',
E         -  '  File "d:\\a\\1\\s\\.tox\\py27-lsof-nobyte-numpy\\lib\\site-packages\\coverage\\sqldata.py", line 468, in add_arcs',
E         -  '    self._choose_lines_or_arcs(arcs=True)',
E         -  '  File "d:\\a\\1\\s\\.tox\\py27-lsof-nobyte-numpy\\lib\\site-packages\\coverage\\sqldata.py", line 493, in _choose_lines_or_arcs',
E         -  '    with self._connect() as con:',
E         -  '  File "d:\\a\\1\\s\\.tox\\py27-lsof-nobyte-numpy\\lib\\site-packages\\coverage\\sqldata.py", line 298, in _connect',
E         -  '    self._create_db()',
E         -  '  File "d:\\a\\1\\s\\.tox\\py27-lsof-nobyte-numpy\\lib\\site-packages\\coverage\\sqldata.py", line 247, in _create_db',
E         -  '    with db:',
E         -  '  File "d:\\a\\1\\s\\.tox\\py27-lsof-nobyte-numpy\\lib\\site-packages\\coverage\\sqldata.py", line 1008, in __enter__',
E         -  '    self._connect()',
E         -  '  File "d:\\a\\1\\s\\.tox\\py27-lsof-nobyte-numpy\\lib\\site-packages\\coverage\\sqldata.py", line 982, in _connect',
E         -  '    filename = os.path.relpath(self.filename)',
E         -  '  File "d:\\a\\1\\s\\.tox\\py27-lsof-nobyte-numpy\\lib\\ntpath.py", line 529, in relpath',
E         -  '    % (path_prefix, start_prefix))',
E         -  'ValueError: path is on drive D:, start on drive c:']

[asottile]

here's the issue in coveragepy: nedbat/coveragepy#895

[nicoddemus]

Awesome, thanks @asottile (and @nedbat for the fix)!

Closing this, should be fixed after next coverage release. 👍