P4 process remains in task stack after executing bamboo when p4 ticket has expired

com.atlassian.bamboo.repository.RepositoryException: Could not retrieve changelogs from perforce
	at com.atlassian.bamboo.repository.perforce.PerforceManager.getChangeNumbersFromRevision(PerforceManager.java:467)
	at com.atlassian.bamboo.repository.perforce.PerforceRepository.collectChangesSinceLastBuild(PerforceRepository.java:123)
	at com.atlassian.bamboo.v2.trigger.DefaultChangeDetectionManager.collectChangesSinceLastBuild(DefaultChangeDetectionManager.java:55)
	at com.atlassian.bamboo.v2.trigger.ChangeDetectionListenerAction.process(ChangeDetectionListenerAction.java:63)
	at com.atlassian.bamboo.build.DefaultBuildExecutionManager.tryToDetectAndBuild(DefaultBuildExecutionManager.java:86)
	at com.atlassian.bamboo.v2.trigger.ChangeDetectionListener.handleEvent(ChangeDetectionListener.java:41)
	at com.atlassian.event.DefaultEventManager$2.run(DefaultEventManager.java:202)
	at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
	at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
	at com.atlassian.bamboo.build.pipeline.concurrent.NamedThreadFactory$1.run(NamedThreadFactory.java:32)
	at edu.emory.mathcs.backport.java.util.concurrent.helpers.ThreadHelpers$1.run(ThreadHelpers.java:34)
	at java.lang.Thread.run(Thread.java:595)
Caused by: com.tek42.perforce.PerforceException: Unable to parse output for change numbers.  Output: Your session was logged out, please login again.

	at com.tek42.perforce.parse.Changes.getChangeNumbersFrom(Changes.java:157)
	at com.atlassian.bamboo.repository.perforce.PerforceManager.getChangeNumbersFromRevision(PerforceManager.java:453)
	... 11 more

Thread t@161: (state = IN_NATIVE)
 - java.lang.UNIXProcess.forkAndExec(byte[], byte[], int, byte[], int, byte[], boolean, java.io.FileDescriptor, java.io.FileDescriptor, java.io.FileDescriptor) @bci=-1503802984 (Interpreted frame)
 - java.lang.UNIXProcess.forkAndExec(byte[], byte[], int, byte[], int, byte[], boolean, java.io.FileDescriptor, java.io.FileDescriptor, java.io.FileDescriptor) @bci=0 (Interpreted frame)
 - java.lang.UNIXProcess.<init>(byte[], byte[], int, byte[], int, byte[], boolean) @bci=62, line=53 (Interpreted frame)
 - java.lang.ProcessImpl.start(java.lang.String[], java.util.Map, java.lang.String, boolean) @bci=182, line=65 (Compiled frame)
 - java.lang.ProcessBuilder.start() @bci=112, line=451 (Compiled frame)
 - com.tek42.perforce.process.CmdLineExecutor.exec(java.lang.String, java.lang.String[]) @bci=205, line=98 (Interpreted frame)
 - com.tek42.perforce.parse.AbstractPerforceTemplate.getPerforceResponse(java.lang.String[], boolean) @bci=50, line=210 (Compiled frame)
 - com.tek42.perforce.parse.AbstractPerforceTemplate.getPerforceResponse(java.lang.String[]) @bci=3, line=184 (Interpreted frame)
 - com.tek42.perforce.parse.Changes.getChangeNumbersFrom(java.lang.String, int) @bci=72, line=145 (Interpreted frame)
 - com.atlassian.bamboo.repository.perforce.PerforceManager.getChangeNumbersFromRevision(com.tek42.perforce.Depot, java.lang.String, int) @bci=18, line=453 (Interpreted frame)
 - com.atlassian.bamboo.repository.perforce.PerforceRepository.collectChangesSinceLastBuild(java.lang.String, java.lang.String) @bci=79, line=123 (Interpreted frame)
 - com.atlassian.bamboo.v2.trigger.DefaultChangeDetectionManager.collectChangesSinceLastBuild(java.lang.String, com.atlassian.bamboo.v2.build.repository.RepositoryV2, java.lang.String) @bci=68, line=55 (Interpreted frame)
 - com.atlassian.bamboo.v2.trigger.ChangeDetectionListenerAction.process() @bci=73, line=63 (Compiled frame)
 - com.atlassian.bamboo.build.DefaultBuildExecutionManager.tryToDetectAndBuild(java.lang.String, com.atlassian.bamboo.build.BuildExecutionManager$BuildDetectionAction, boolean) @bci=54, line=86 (Interpreted frame)
 - com.atlassian.bamboo.v2.trigger.ChangeDetectionListener.handleEvent(com.atlassian.event.Event) @bci=52, line=41 (Interpreted frame)
 - com.atlassian.event.DefaultEventManager$2.run() @bci=8, line=202 (Interpreted frame)
 - edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.runTask(java.lang.Runnable) @bci=44, line=650 (Compiled frame)
 - com.atlassian.bamboo.build.pipeline.concurrent.NamedThreadFactory$1.run() @bci=15, line=32 (Interpreted frame)
 - edu.emory.mathcs.backport.java.util.concurrent.helpers.ThreadHelpers$1.run() @bci=4, line=34 (Interpreted frame)
 - java.lang.Thread.run() @bci=11, line=595 (Interpreted frame)