Build failed. https://zuul.opendev.org/t/openstack/buildset/37b0ce8394c94ad49b95162feb03ebf4 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/35545581bf8e44a7994f58ee6ede1520 : FAILURE in 4m 34s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/1ac9c67786fb4ac3a141f59e50423505 : SUCCESS in 4m 01s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/3a14cb84f3054f9fa7f31b4494782004 : SUCCESS in 3m 18s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/5ced93e337c04d71806bb61d4109e5e9 : SUCCESS in 3m 53s