Build failed. https://zuul.opendev.org/t/openstack/buildset/f02d978f4bf040718f4cc14831637a8e - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/f080157f302649c08430636966ea66d5 : FAILURE in 5m 18s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/4a2126d416ab419ba69566479660925a : SUCCESS in 5m 18s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/23b0eb453713411cb81a519c5db65360 : SUCCESS in 4m 39s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/9cda823717ec42daaaf7aa2429daea7a : SUCCESS in 5m 44s