Update coverage to 5.0.2

[pyup-bot]

This PR updates coverage from 5.0 to 5.0.2.

Changelog

5.0.2

----------------------------

- Programs that used multiprocessing and changed directories would fail under
coverage.  This is now fixed (`issue 890`_).  A side effect is that debug
information about the config files read now shows absolute paths to the
files.

- When running programs as modules (``coverage run -m``) with ``--source``,
some measured modules were imported before coverage starts.  This resulted in
unwanted warnings ("Already imported a file that will be measured") and a
reduction in coverage totals (`issue 909`_).  This is now fixed.

- If no data was collected, an exception about "No data to report" could happen
instead of a 0% report being created (`issue 884`_).  This is now fixed.

- The handling of source files with non-encodable file names has changed.
Previously, if a file name could not be encoded as UTF-8, an error occurred,
as described in `issue 891`_.  Now, those files will not be measured, since
their data would not be recordable.

- A new warning ("dynamic-conflict") is issued if two mechanisms are trying to
change the dynamic context.  Closes `issue 901`_.

- ``coverage run --debug=sys`` would fail with an AttributeError. This is now
fixed (`issue 907`_).

.. _issue 884: https://github.com/nedbat/coveragepy/issues/884
.. _issue 890: https://github.com/nedbat/coveragepy/issues/890
.. _issue 891: https://github.com/nedbat/coveragepy/issues/891
.. _issue 901: https://github.com/nedbat/coveragepy/issues/901
.. _issue 907: https://github.com/nedbat/coveragepy/issues/907
.. _issue 909: https://github.com/nedbat/coveragepy/issues/909


.. _changes_501:

5.0.1

----------------------------

- If a 4.x data file is the cause of a "file is not a database" error, then use
a more specific error message, "Looks like a coverage 4.x data file, are you
mixing versions of coverage?"  Helps diagnose the problems described in
`issue 886`_.

- Measurement contexts and relative file names didn't work together, as
reported in `issue 899`_ and `issue 900`_.  This is now fixed, thanks to
David Szotten.

- When using ``coverage run --concurrency=multiprocessing``, all data files
should be named with parallel-ready suffixes.  5.0 mistakenly named the main
process' file with no suffix when using ``--append``.  This is now fixed,
closing `issue 880`_.

- Fixed a problem on Windows when the current directory is changed to a
different drive (`issue 895`_).  Thanks, Olivier Grisel.

- Updated Python 3.9 support to 3.9a2.

.. _issue 880: https://github.com/nedbat/coveragepy/issues/880
.. _issue 886: https://github.com/nedbat/coveragepy/issues/886
.. _issue 895: https://github.com/nedbat/coveragepy/issues/895
.. _issue 899: https://github.com/nedbat/coveragepy/issues/899
.. _issue 900: https://github.com/nedbat/coveragepy/issues/900


.. _changes_50:

Links

• PyPI: https://pypi.org/project/coverage
• Changelog: https://pyup.io/changelogs/coverage/
• Repo: https://github.com/nedbat/coveragepy

[pyup-bot]

Closing this in favor of #198