Build failed. https://zuul.opendev.org/t/openstack/buildset/5a43fd59346a4fbdbe96d2643bed9c3d - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/5f58ec3edd64456f8acc2b70af58da51 : FAILURE in 3m 26s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b9bc1f5437024cb3a4211f2c9a251b6a : SUCCESS in 3m 56s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f3d49d9c50544fc78f248605f241f6a5 : SUCCESS in 4m 04s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/13cc32d78889428183b08d0b43e5f06e : SUCCESS in 3m 02s