Build failed. https://zuul.opendev.org/t/openstack/buildset/d3a7ecdd72be49188cb16b6f5043e874 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/169b40aa328d4faa80cd32e7c4e2fe95 : SUCCESS in 3m 59s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/9d8a59d3fed647f1b00fae8ba429fc67 : SUCCESS in 3m 54s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/08fa49dd61d84272aabbb374c4e21f7c : SUCCESS in 4m 04s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c85991cee905496e97990cc9f4345826 : FAILURE in 3m 36s