Build failed. https://zuul.opendev.org/t/openstack/buildset/837f498f7b73425e9d4ed4acbbd15fc9 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/b18b663469684eacaf41f62248ba0dad : SUCCESS in 2m 35s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/851789e2cf4b4288ab58754658a59734 : SUCCESS in 3m 47s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/8d859008930d4ad59a325fb081b7485c : SUCCESS in 2m 44s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/42aa5d2bdeb24408b77627ec519a0dc3 : FAILURE in 2m 43s