Build failed. https://zuul.opendev.org/t/openstack/buildset/819e8941fd6a40f7a1ab6ae5d73d3738 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/f7b0035eecf84c6f8d4c4935eb6626f2 : FAILURE in 4m 59s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/0b30f93b26754ef1abcef058e1cfcc0f : SUCCESS in 3m 36s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/62ff332f008c4d9da48e5ff7a219f7c1 : SUCCESS in 4m 00s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/e40885fdc2e841ab89b989dac0871232 : SUCCESS in 5m 11s