Build failed. https://zuul.opendev.org/t/openstack/buildset/e6156ba93a814df9977d2afe792ed787 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/2913e0e0e11c4b89864e9951c0e4fc4c : SUCCESS in 3m 33s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/29fb2aef8a0942b5b91327ead74c8422 : SUCCESS in 3m 17s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/9c12fb186df74d7b86ca0ef540fff968 : FAILURE in 3m 06s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/7ab0066c3779489a8ae98555206e8648 : FAILURE in 2m 35s