Build failed. https://zuul.opendev.org/t/openstack/buildset/71ec139b58e34a7d8b0ed32ad80afc5b - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/ae599f7baccd4a9aae52a52d0a50b7a6 : FAILURE in 8m 24s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/286f9e83e6964bf2af79848ca34784ad : SUCCESS in 8m 09s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/2d5661852764496b9938a752428c3b83 : SUCCESS in 6m 18s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/715753ddfd2c4ef1bb85f2ffaf679ada : SUCCESS in 5m 52s