Build failed. https://zuul.opendev.org/t/openstack/buildset/4f32ebb9fd6544f6bb6d2193c95c573c - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/3bc72caf396f43099155168117dbe485 : FAILURE in 3m 39s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/5c5a25100ad242a0a81caad845348234 : SUCCESS in 3m 24s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/25683a16980d46dca0004cf753e09eed : SUCCESS in 3m 19s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/af13bba95aac47b3a75c88c313f9f6ae : SUCCESS in 4m 28s