Build failed. https://zuul.opendev.org/t/openstack/buildset/dbc59483486045ce9a57c6b9b2f8632f - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/b358e3b448e04063b8a7e87622f12cea : SUCCESS in 2m 52s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/1f9b7ec79206460d9836a7b00985b2e3 : SUCCESS in 3m 16s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/a94122bfe00640729df5aa1cc994c3f9 : SUCCESS in 5m 22s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/45635fb7fbf64c2f8099691f100c28e8 : FAILURE in 2m 40s