Build failed. https://zuul.opendev.org/t/openstack/buildset/39c71e5603134669a758081d88a1d8b3 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/a05a980fe9f649298b8ad5cc50594056 : SUCCESS in 3m 07s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/9d6ebc38916645e0933f8c38b35de828 : SUCCESS in 4m 56s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/b8560a300ebf4601a9cbc0a6f82e80d0 : FAILURE in 3m 08s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/7211ae1931344000aa7e8bf682cb5014 : FAILURE in 3m 02s