Build failed. https://zuul.opendev.org/t/openstack/buildset/56f0aa4d95114b7f80a5ea0362dbef11 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/73f16651deb74514aaa14338c922095f : SUCCESS in 3m 10s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/7fba1a2fcf824a57be8b778c07683a31 : SUCCESS in 4m 16s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/0a6e076dda294b24acfc4648eff000b4 : SUCCESS in 3m 20s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/69ea704bace34118bf08b12f2ec516f8 : FAILURE in 3m 49s