[Openstack-stable-maint] Stable check of openstack/oslo.concurrency failed

Build failed. - periodic-oslo.concurrency-docs-newton http://logs.openstack.org/periodic-stable/periodic-oslo.concurrency-docs-new... : SUCCESS in 2m 41s - periodic-oslo.concurrency-python27-newton http://logs.openstack.org/periodic-stable/periodic-oslo.concurrency-python27... : SUCCESS in 3m 38s - periodic-oslo.concurrency-docs-ocata http://logs.openstack.org/periodic-stable/periodic-oslo.concurrency-docs-oca... : SUCCESS in 4m 15s - periodic-oslo.concurrency-python27-ocata http://logs.openstack.org/periodic-stable/periodic-oslo.concurrency-python27... : FAILURE in 2m 36s