Build failed. https://zuul.opendev.org/t/openstack/buildset/b42dd32b47324bf192cfce4ca228754d - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/72e0630b009e465abf06de758fd1faac : SUCCESS in 4m 54s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/e71c782483544489be421b762aae7d12 : SUCCESS in 4m 03s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ead155940ffd48b2b92e3f45f1034948 : FAILURE in 3m 49s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/8e963e9b38f94bd38e0643315a281bdc : FAILURE in 3m 22s