Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/1c2d2ca46f6b46e0aad312ca9ea179dd : SUCCESS in 4m 42s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/5e336bd195374cdb95394ff34647a23a : SUCCESS in 6m 21s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/cf7a2a34c4634ec8950e96b7d03a37e3 : FAILURE in 10m 08s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/067702d2248d4f93a0b2f68b39437329 : SUCCESS in 5m 27s