Build failed. https://zuul.opendev.org/t/openstack/buildset/6abbf38190824ce9a30f480032f90d2b - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/fdb801f3b0384f94a1432ebe08d86b17 : SUCCESS in 4m 02s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c5c1836368c24ce4b0c2d9b1125ea50a : SUCCESS in 6m 29s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/41965bc832d94542865b746eb1611b38 : SUCCESS in 5m 36s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/204757cfb7944ab087e935d95f9c81b6 : FAILURE in 5m 16s