Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/528ec60a683747cbb2466ec70b70ab24 : SUCCESS in 6m 28s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/544eac308cae42ca881c6cd10d308f39 : FAILURE in 5m 34s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/b1fa01c046224bb996f2cfd8af396463 : SUCCESS in 6m 37s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/ccb1c70ac0394affaaae88ed96aca963 : SUCCESS in 6m 49s