Build failed. https://zuul.opendev.org/t/openstack/buildset/e2062c66c8b24f86bed6bd4d1468c0e2 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/39ec7aa7418c42c587f142a16b9ca9cd : SUCCESS in 3m 06s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/7686d158301143c0bfd7e32a4ccb4852 : SUCCESS in 3m 39s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/1197b421f26e439b8b555e179177449e : FAILURE in 2m 53s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/8da128d894b645dfad486cb889cab2aa : FAILURE in 2m 48s