Build failed. https://zuul.opendev.org/t/openstack/buildset/db1c73c3d0dd471f9bf84eaefc536b78 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/7461c5af590249f28aa4c63612490f6d : SUCCESS in 3m 29s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d4a65dcf99bd4b4696d08bdcce5fa6d6 : SUCCESS in 2m 59s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/0c522368f7ad4da4a886c5dbf0462b43 : SUCCESS in 4m 16s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/0e16a09f5e944491b6c2221edc1ce473 : FAILURE in 3m 36s