Build failed. https://zuul.opendev.org/t/openstack/buildset/163f5d1071f94f5e940b3488593fa310 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/d756f7b124bc494ea9e815a674e16619 : SUCCESS in 6m 39s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d860684707f84842a0d895d5ba08c54d : SUCCESS in 6m 53s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/147e0afe716d44f3afb475dee765e79d : SUCCESS in 4m 17s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/4cdb12985ed14e58bf5be413a75032c9 : FAILURE in 4m 10s