See <https://builds.apache.org/job/DeltaSpike_TomEE_1.7.0/org.apache.deltaspike.modules$deltaspike-scheduler-module-impl/342/>
- Jenkins build is unstable: DeltaSpike_TomEE_1.7.0 » ... Apache Jenkins Server
- Jenkins build is still unstable: DeltaSpike_Tom... Apache Jenkins Server
