Build failed. https://zuul.opendev.org/t/openstack/buildset/a4fabaeb63384c4c82ec6ece5f42f574 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/b3ec739a1b324f5b8a4cfab55d30ac6e : SUCCESS in 4m 37s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/bc0302b9a8e7447f8dc93958de307a7c : SUCCESS in 4m 40s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/1b27f2da92f34792b2afdef8f94d6f93 : SUCCESS in 4m 44s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/76808960d3c14869b699c05261990461 : FAILURE in 4m 29s