Log Message:
1.20.0:

Features
- ``xdist`` now supports tests to log results multiple times, improving
  integration with plugins which require it like `pytest-rerunfailures
  <https://github.com/gocept/pytest-rerunfailures>_` and `flaky
  <https://pypi.python.org/pypi/flaky>`_.

Bug Fixes
- Fix issue where tests were being incorrectly identified if a worker crashed
  during the ``teardown`` stage of the test.