Build failed. https://zuul.opendev.org/t/openstack/buildset/8419ebd86cbb40bf9e7f4b7744a63562 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/7f822a83bd974be08d5a8919b80b62ce : SUCCESS in 4m 37s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/6c971f0433be4e1ea42b3b4562a344a0 : SUCCESS in 3m 45s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/c1d26e3f02694ec186a84b4f26e3e921 : SUCCESS in 4m 24s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/5050b07dc1d3492a94b546cb26aee7e0 : FAILURE in 3m 51s