Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/72b8c273e6d742b883d6f70dacbee343 : SUCCESS in 5m 13s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/6ed87e823bb14a09a83305e6d9995b57 : FAILURE in 4m 38s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/cda418ec364741e5a6760bb196f88a3b : FAILURE in 4m 33s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/91e191669e524296b2f338bf79f6869f : FAILURE in 5m 33s