Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/0f92bc0217f74d33982d71ed11c35edf : SUCCESS in 7m 37s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/998ad824f48b448e8f212d978d081104 : SUCCESS in 8m 56s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/04bc8a70207b4519bebad5090cf14b9c : SUCCESS in 8m 26s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c1012e990730422c90f789610d494080 : FAILURE in 6m 43s