Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/592fcf69c2544c1083994518d37322ed : SUCCESS in 9m 06s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/49f6429b0efc4d34a5bb0420fc5231a9 : SUCCESS in 13m 46s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/c10a896750ff4a51be162efe33135245 : SUCCESS in 10m 38s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/cf6b0e45599c45049ec02adebc8d575e : FAILURE in 4m 18s