Build failed. https://zuul.opendev.org/t/openstack/buildset/b25fe079f47d45b9a0f984e0bdb64d88 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/7c973c2ed6bd4c468c2ac9b047f37524 : FAILURE in 4m 52s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d6794e6cbe9c495e9f859cba23cb03c2 : RETRY_LIMIT in 3m 05s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/48ad981bd9b64b32a796716e63b14c64 : SUCCESS in 4m 52s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/d016f1b3052d46f6bbadb304372929d2 : SUCCESS in 5m 26s