Build failed. - build-openstack-sphinx-docs http://logs.openstack.org/periodic-stable/opendev.org/openstack/heat/stable/pike/build-openstack-sphinx-docs/4adcdae/html/ : SUCCESS in 5m 14s - openstack-tox-py27 http://logs.openstack.org/periodic-stable/opendev.org/openstack/heat/stable/pike/openstack-tox-py27/185aaa6/ : RETRY_LIMIT in 2m 09s