Build failed. https://zuul.opendev.org/t/openstack/buildset/c02911eb7c304ee4a80722abad3041c1 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/b19e8a7d57534c2ca6ce9f9165720d62 : SUCCESS in 3m 47s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/9e4be9804f114cda92afaded9e688ae9 : SUCCESS in 4m 41s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/a44a0b80c4d9477e8dbf8467dee1947a : SUCCESS in 4m 34s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/8348428baf264fa98a52ebe2c6577406 : FAILURE in 3m 56s