Build failed. https://zuul.opendev.org/t/openstack/buildset/b703a334f6e741edb05fd9b5b15b8e97 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/7419ceeeb4034bedbcc2282a39d436a8 : FAILURE in 3m 54s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b7f8a9a6c6b644af8a45e08d9ca60365 : SUCCESS in 3m 41s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/56f16a4970a349e1b71aa335cff4eb40 : SUCCESS in 2m 51s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/f914539951c54093bf6a82b8e4101b00 : SUCCESS in 3m 31s