Build failed. https://zuul.opendev.org/t/openstack/buildset/0710ded15640486896595adbc60196b2 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/5f7b53c70e49490b9c49aa0d1c360bfb : SUCCESS in 2m 47s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/be9eec9704bc4769864dc98d9d0f4b07 : FAILURE in 2m 38s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/34d4821eabfc47f8a31aa73a54364a3f : SUCCESS in 2m 55s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/a39382c457d4474db98a802f83efac92 : FAILURE in 2m 36s