Build failed. https://zuul.opendev.org/t/openstack/buildset/cd6ba614533e4ee39548a26e56ee51f4 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/c33b1129f2314394b89f077a1490f0c8 : SUCCESS in 2m 38s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d1cfa49e58524b6090abbfa4d80b2f43 : SUCCESS in 2m 17s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/abd44ed134f24286a474a53a36b083b5 : SUCCESS in 2m 45s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/ed01de6280d34d45a24179f28d4bb3e9 : FAILURE in 2m 47s