Build failed. https://zuul.opendev.org/t/openstack/buildset/6b7cd23e04b943a2bedd08503b25c7f8 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/5d2cedaf91e74ee3bd706c9a00ca13ac : SUCCESS in 3m 53s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b53e4ce95d8b4cf394e607bee81b1b59 : SUCCESS in 5m 01s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/2f8819f1264a4c00aa496de963d8f83c : SUCCESS in 5m 07s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/6beb83cc92e84adf90675442be49e8cc : FAILURE in 4m 02s