Build failed. https://zuul.opendev.org/t/openstack/buildset/fd64c80a2fb3468d86f78395bc4a560e - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/89889d515dca479998c7e218dacac47d : SUCCESS in 3m 58s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b13196df06d94ffabc0892c556ae1f27 : FAILURE in 4m 08s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/b2b6bb1f7cf14001802b963eef8306c2 : SUCCESS in 5m 39s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/e2ff8eedea0548da83f2fd92a5fa12a6 : SUCCESS in 4m 07s