Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/61ff4bb3d2aa4640b7d78cdd463414cc : SUCCESS in 6m 44s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c190e672e32e45289917c7b4b8192a7f : SUCCESS in 9m 35s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f68f127255fe40a0a97a630307d7174b : SUCCESS in 8m 08s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/675489bfe35740f680c55adaa9f0737d : FAILURE in 4m 24s