Build failed. https://zuul.opendev.org/t/openstack/buildset/193a218f1b0940e9b857c3d9b7329c62 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/d9052347de28475fb77dddafed8d8f42 : SUCCESS in 3m 09s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/cb5517160c5546cb910836bfeccc33e7 : SUCCESS in 2m 45s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/eef766e1a3b54fb78204811d2be5eea4 : FAILURE in 2m 53s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/a696fb51159b4fc3b53fbf2ae1d671d0 : FAILURE in 2m 34s