Build failed. https://zuul.opendev.org/t/openstack/buildset/34c07f16746647a88b29b9f53e8dfa9c - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/8345b75fd54f44ee98fb899b57574c67 : SUCCESS in 5m 18s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/564941614e9b468092328ca606e9e9a7 : FAILURE in 4m 21s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/468e5cc908644cd093eecff4e2ef13f7 : SUCCESS in 4m 43s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c3fd8a0c76614167afb4037c218c2671 : SUCCESS in 4m 00s