Build failed. https://zuul.opendev.org/t/openstack/buildset/1b0950b9c39447d6a62d53d631fe8baf - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e7e1949c0b7a43a686803fa3d81c231b : SUCCESS in 4m 20s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b456e7fcb55e4159bd0cd9a0f038248b : SUCCESS in 6m 10s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/3b0c5df5be4e4853b7aa281657492d0b : FAILURE in 6m 04s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/ca01bbfa349040feae3e7f46ab25dcf5 : FAILURE in 4m 10s