Build failed. https://zuul.opendev.org/t/openstack/buildset/98e00532aa3d420bb8549c1aca02a918 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/eb367875ee2a4bb7a9bbe6a3429d30d2 : SUCCESS in 5m 05s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/715efce493d34acdbab15bddbddb2bd0 : SUCCESS in 6m 11s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/61ea0af2995c447da12fe674786d2392 : SUCCESS in 6m 06s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/d950392991c84578bc300ccbe457e3bf : FAILURE in 5m 52s