Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/0163734f183247078710c2710ae73571 : SUCCESS in 3m 59s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/16e4a66c7d6147558930cc12ee8fd4b6 : SUCCESS in 8m 13s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/944260ee16944b21bfb34ac078226428 : SUCCESS in 7m 35s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/1dd9ba8b95e84f9bae10e53ab62b5c89 : FAILURE in 3m 53s