RejectedExecutionException - SCM DELIVER

Every now and then, we're having a 'RejectedExecutionException' at the moment of 'SCM DELIVER'.
This command is executed as part of 'mvn scm:checkin'

We are working with RTC 5.0.1
Depending on where/when the error occurs, we can just rerun the build and cross our fingers.

Is there anything we can do to avoid having this error?

[INFO] --- maven-scm-plugin:1.9.2:checkin (default-cli) @ SatmarsServices ---

[INFO] Executing: cmd.exe /X /C "scm create changeset --username s_JTSBUILD --password ***** "set development parent 4.45-INT-SNAPSHOT""

[INFO] Working directory: D:\Jenkins\workspace\rtc.release.int.fleetservices.satmarsservices\SatmarsServices

[INFO] Executing: cmd.exe /X /C "scm status --username s_JTSBUILD --password ***** --wide"

[INFO] Working directory: D:\Jenkins\workspace\rtc.release.int.fleetservices.satmarsservices\SatmarsServices

[INFO] Executing: cmd.exe /X /C "scm checkin --username s_JTSBUILD --password ***** ."

[INFO] Working directory: D:\Jenkins\workspace\rtc.release.int.fleetservices.satmarsservices\SatmarsServices

[INFO] Executing: cmd.exe /X /C "scm deliver --repository-uri https://rtc.essers.com:9443/ccm --username s_JTSBUILD --password ***** --source "java.bld.int.fleetservices Workspace" --target java.integration --overwrite-uncommitted"

[INFO] Working directory: D:\Jenkins\workspace\rtc.release.int.fleetservices.satmarsservices\SatmarsServices

[ERROR] Error: java.util.concurrent.RejectedExecutionException: Task com.ibm.team.repository.client.util.EventSource$BackgroundEventDispatcher$4@59f1464d rejected from java.util.concurrent.ThreadPoolExecutor@22e52a56[Shutting down, pool size = 1, active threads = 1, queued tasks = 0, completed tasks = 40]

      at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2114)

      at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:852)

      at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1415)

      at com.ibm.team.repository.client.util.EventSource$BackgroundEventDispatcher.queue(EventSource.java:787)

      at com.ibm.team.repository.client.util.EventSource.sendEvents(EventSource.java:639)

      at com.ibm.team.repository.client.util.EventSource.release(EventSource.java:404)

      at com.ibm.team.filesystem.rcp.core.internal.changes.util.ComponentSyncContext.setLoggedIn(ComponentSyncContext.java:1305)

      at com.ibm.team.filesystem.rcp.core.internal.changes.util.listeners.RepositoryListener.handleEvents(RepositoryListener.java:58)

      at com.ibm.team.repository.client.util.EventSource$BackgroundEventDispatcher$1.run(EventSource.java:720)

      at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)

      at com.ibm.team.repository.client.util.EventSource$BackgroundEventDispatcher.process(EventSource.java:713)

      at com.ibm.team.repository.client.util.EventSource$BackgroundEventDispatcher$3.run(EventSource.java:771)

      at com.ibm.team.repository.client.util.ThreadCheck.runProhibitingLongOps(ThreadCheck.java:174)

      at com.ibm.team.repository.client.util.EventSource$BackgroundEventDispatcher.process(EventSource.java:756)

      at com.ibm.team.repository.client.util.EventSource$BackgroundEventDispatcher$4.run(EventSource.java:790)

      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1176)

      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)

Regards,
Bernd.