Build failed. https://zuul.opendev.org/t/openstack/buildset/ea32bcff23f74ff4bd28f0febc69dade - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/8a89f48b267c4872ae4eb6150bae7cd2 : SUCCESS in 4m 15s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/555865be4ae64351982b58c3edde4a24 : SUCCESS in 2m 32s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/a1327cbd2e7945b7aa76960b55232cdc : SUCCESS in 2m 20s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/4049a81ff68c4a68a7172abd0f1b5932 : FAILURE in 2m 55s