Build failed. https://zuul.opendev.org/t/openstack/buildset/e1747da4fc5f461182a968eab941994f - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/8a67d6c6c5474749962c93d82bf53b23 : SUCCESS in 3m 45s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/165c02ff59c740829102b3cc22c0d98d : SUCCESS in 4m 37s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/963a388b8e21430796fb4f60f19283d7 : SUCCESS in 4m 40s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/924ed7e6c4a24b8dbc678739c83bea63 : FAILURE in 3m 58s