Build failed. https://zuul.opendev.org/t/openstack/buildset/da3d55bf526d45cb9583eac24197f71a - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e1a1239a39784dfd97ebdf8b2bc1126f : FAILURE in 6m 18s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/2f3243208fe74965be9c1552523df899 : SUCCESS in 4m 34s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/5a2db0ceacf5412dbdfee180ad755c00 : SUCCESS in 6m 29s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c23b361fff774d4aa139e8c43f239ed6 : SUCCESS in 5m 41s