Build failed. https://zuul.opendev.org/t/openstack/buildset/b01c14fb0b204b99b6c3fe6a2ef6029b - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/bae323c1af794ecfa7013b3aefad8405 : SUCCESS in 8m 58s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/a27d896682f24efaac25f7c6eb9317ba : SUCCESS in 5m 38s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f8320262fbca44df945f993fefd04d6d : SUCCESS in 6m 02s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/3e482e1831fd47c881bb99ff8b39983b : FAILURE in 6m 34s