Build failed. https://zuul.opendev.org/t/openstack/buildset/1372247a61414db483ccc5a9cfa1c0ea - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/366efa0e7f654b08b8da5e60548cd7e1 : SUCCESS in 3m 09s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/2db26da7e6124a1d9feec65a12089bb3 : SUCCESS in 3m 19s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/c7fb27c72eca442c8340464e80024779 : FAILURE in 3m 33s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/31ef9e9f388e4643a5bf832ce6a17615 : FAILURE in 3m 32s