Build failed. https://zuul.opendev.org/t/openstack/buildset/d906b4a8611640ee8185f2fca5a2c1ea - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/ee0a3877abf041a685472436c8404290 : SUCCESS in 3m 43s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/565cdd42aa6c47a693e4e09696b9b905 : SUCCESS in 3m 50s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/1d68c7d522a54c2f82825b4c06b80407 : SUCCESS in 2m 54s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/5e30f04aadc9442baa50f04fbe1f2e1e : FAILURE in 2m 47s