Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/f0a63516c06248389b692ee0b2bfe33b : SUCCESS in 5m 14s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/16a9feefdd674b2ca10c6a512b0cd4b3 : SUCCESS in 7m 00s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/059384d659f84eb293d8763c058ad0f0 : SUCCESS in 7m 01s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/1d97065d37f149028ef0b158cc579239 : FAILURE in 3m 58s