Build failed. https://zuul.opendev.org/t/openstack/buildset/fa510c3491ac465c9c1595b9ca92857e - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e2e8792d50614b2da83ecfa0ae25136c : SUCCESS in 3m 18s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/13022fd933df431b8b7738b7db48e0c3 : SUCCESS in 2m 45s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/e6f2286cce3a460b989e941eb6bfede7 : FAILURE in 4m 00s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/8a8290cb0ccd40f8987ad3af204535f1 : FAILURE in 2m 29s