Build failed. https://zuul.opendev.org/t/openstack/buildset/7a05f39fe0d4461c8c19d7994f37f2d9 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/8b5ea86e970241a9a4e19b7e7f6a0a02 : SUCCESS in 3m 04s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/17dbcd5bed034981ae08c863bb6e0689 : SUCCESS in 2m 50s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/1f7c39d43fbc45d6b865f53d270cbcc1 : SUCCESS in 2m 46s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/823ec467362440ea8f81dd008caa7283 : FAILURE in 6m 51s