Build failed. https://zuul.opendev.org/t/openstack/buildset/d19ae2ad837d49938f3f9026a5869145 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/14b281565f424d0a9c0cdcd914b450a8 : SUCCESS in 3m 24s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/e25eea907b38449495f946ee3b41aac9 : SUCCESS in 4m 26s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/b590334ffb754ff49611b0952496fad9 : SUCCESS in 4m 40s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/353db4ab2dc04fc4a5b37b179fed8631 : FAILURE in 4m 42s