Build failed. https://zuul.opendev.org/t/openstack/buildset/1a2a0d834c45496eb1140ea2ce1894e8 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/a574f8a9daad487d886a479e5c68512b : FAILURE in 4m 48s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/f8f7afd8a0284ac3aa0b84c4c48cf2b6 : SUCCESS in 4m 12s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/5846da9217344e9bafb1a62a64341565 : SUCCESS in 4m 33s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/de88c50c695640a096d8939ffda6c925 : SUCCESS in 4m 52s