Build failed. https://zuul.opendev.org/t/openstack/buildset/3bfb9b25d0954987a3f9fe1de6b4c99a - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/4d6cb3ddd7ec43658be48bc37cec9981 : SUCCESS in 3m 04s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/e4dd859577404c47aad783d993cd56e9 : FAILURE in 2m 46s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/78183aa40b6a4601811a8791f40e8a0e : SUCCESS in 3m 39s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/6c4f69ab97b545cd8267a0e74883d082 : FAILURE in 2m 47s