Build failed. https://zuul.opendev.org/t/openstack/buildset/6fb1c94c924047e7bf252d794d93ea74 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/a19f0ef3e192407d9751ecc3d8e51257 : SUCCESS in 5m 08s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/425642c7af0f45ecb4ed65855e5ddb68 : SUCCESS in 3m 58s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/b3dfad9794114505a10566a4ab66c944 : SUCCESS in 5m 06s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/bb2ef6d994754c44bc6b52898521c6a5 : FAILURE in 3m 03s