Build failed. https://zuul.opendev.org/t/openstack/buildset/eaa0aa8a33d5411eb9d6c13f484e1d83 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/5f06e30b4c35478e9d48b7cd1f0ab47f : SUCCESS in 2m 45s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/2347ff0ce3664b949786cd28f7a5c874 : SUCCESS in 3m 46s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ec69b4ecbf4c4f028db8e782803c0dcc : SUCCESS in 3m 31s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/1f8fe2b2a3c944228de172c758c0d00e : FAILURE in 3m 11s