Build failed. https://zuul.opendev.org/t/openstack/buildset/4c48c9a38e0f45de8410089066337b6f - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/087342aa510242ea98379bef8b278ab5 : SUCCESS in 3m 18s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/72724df413644d4f8818b3d236268110 : SUCCESS in 3m 12s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/a75fa47f22c54241a63fd945bcf65b11 : FAILURE in 3m 00s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/fcfabbe4efa44d25bbb2d714bcf9017e : FAILURE in 2m 58s