Build failed. https://zuul.opendev.org/t/openstack/buildset/c97d0bd2225d48d39b5292c39dc654af - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/74028cd407064892b7fe10c2dfe813e2 : SUCCESS in 4m 24s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/3b830b43e21048739584524ca65b2663 : FAILURE in 2m 56s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/c76344489da64897a8536df501767691 : SUCCESS in 7m 20s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/3e37cebb2ace4fae912b4a5a1bb674e9 : SUCCESS in 6m 10s