Build failed. https://zuul.opendev.org/t/openstack/buildset/3c643ee12750413e914d166200d6ae65 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/b07a41b5b5944d79b1e140ae53c62bfe : SUCCESS in 3m 47s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/04efc12a96f644d3bbdfb36328d592f1 : SUCCESS in 6m 19s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/24f010d9628e459daf3cb761b11c92bc : SUCCESS in 6m 48s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/98558419577f4a17a36cb87a3fadda0e : FAILURE in 5m 10s