Build failed. https://zuul.opendev.org/t/openstack/buildset/1afc71aae2c947359a4c01195b3fe0fe - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/761a50c930424ceb8af03c3aa3a20567 : FAILURE in 3m 58s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/caf6ab60a36944a7bdc1511c910a7ef7 : FAILURE in 3m 54s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/6d0ddbf7c7fe4f6b8bcb21a2f8330191 : FAILURE in 4m 16s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/abe2875678ab452a826d7afafac6a292 : FAILURE in 4m 14s