Build failed. https://zuul.opendev.org/t/openstack/buildset/9830a2506d7a4d99859f49c2c9762402 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/11570cc64b3548b4809d4c683c77ab2e : FAILURE in 4m 50s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/9dd02f6849c14d748f7dd7f4a9beaf00 : FAILURE in 4m 33s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/e4763fbe0898406e9d7c13257b486cf0 : FAILURE in 4m 34s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/977653a8b7b74c80ac734e1f362f6f54 : FAILURE in 7m 24s