Build failed. https://zuul.opendev.org/t/openstack/buildset/fa7bb2ed40bf4bb894891c499cbe6fcb - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/1be3757a171044ab8356fe0f943b1d7c : FAILURE in 4m 08s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/96a50bdc574e4861bcd76278c92a89c0 : FAILURE in 3m 55s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/7da4c095d758412dbbc62bc3c295f80c : FAILURE in 3m 40s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c8fe399c7a5e46f9a30f7d661014af77 : FAILURE in 3m 48s