Build failed. - build-openstack-sphinx-docs http://logs.openstack.org/periodic-stable/opendev.org/openstack/taskflow/stable/queens/build-openstack-sphinx-docs/1e7fd08/ : FAILURE in 3m 56s - openstack-tox-py27 http://logs.openstack.org/periodic-stable/opendev.org/openstack/taskflow/stable/queens/openstack-tox-py27/d0a33d9/ : RETRY_LIMIT in 2m 06s