HawtDBAggregateDiscardOnTimeoutTest.testAggregateDiscardOnTimeout fails intermittently on Hudson

The HawtDBAggregateDiscardOnTimeoutTest.testAggregateDiscardOnTimeout fails intermittently during setup on Hudson with the stack trace show below. When run on my laptop or on one of the Hudson nodes, it only fails about 1 out of 5 times, but that's still enough to cause builds to fail. I have added an @Ignore to the test.

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Test set: org.apache.camel.component.hawtdb.HawtDBAggregateDiscardOnTimeoutTest
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Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0.955 sec <<< FAILURE!
testAggregateDiscardOnTimeout(org.apache.camel.component.hawtdb.HawtDBAggregateDiscardOnTimeoutTest) Time elapsed: 0.834 sec <<< ERROR!
java.lang.NoSuchMethodError: org.apache.camel.component.hawtdb.HawtDBAggregationRepository.access$0(Lorg/apache/camel/component/hawtdb/HawtDBAggregationRepository;)Lorg/apache/camel/component/hawtdb/HawtDBFile;
at org.apache.camel.component.hawtdb.HawtDBAggregationRepository$8.execute(HawtDBAggregationRepository.java:353)
at org.apache.camel.component.hawtdb.HawtDBAggregationRepository$8.execute(HawtDBAggregationRepository.java:1)
at org.apache.camel.component.hawtdb.HawtDBFile.doExecute(HawtDBFile.java:165)
at org.apache.camel.component.hawtdb.HawtDBFile.execute(HawtDBFile.java:119)
at org.apache.camel.component.hawtdb.HawtDBAggregationRepository.size(HawtDBAggregationRepository.java:351)
at org.apache.camel.component.hawtdb.HawtDBAggregationRepository.doStart(HawtDBAggregationRepository.java:484)
at org.apache.camel.support.ServiceSupport.start(ServiceSupport.java:60)
at org.apache.camel.util.ServiceHelper.startService(ServiceHelper.java:62)
at org.apache.camel.util.ServiceHelper.startService(ServiceHelper.java:52)
at org.apache.camel.util.ServiceHelper.startServices(ServiceHelper.java:73)
at org.apache.camel.processor.aggregate.AggregateProcessor.doStart(AggregateProcessor.java:844)
at org.apache.camel.support.ServiceSupport.start(ServiceSupport.java:60)
at org.apache.camel.util.ServiceHelper.startService(ServiceHelper.java:62)
at org.apache.camel.util.ServiceHelper.startService(ServiceHelper.java:52)
at org.apache.camel.util.ServiceHelper.startServices(ServiceHelper.java:73)
at org.apache.camel.util.AsyncProcessorConverterHelper$ProcessorToAsyncProcessorBridge.start(AsyncProcessorConverterHelper.java:92)
at org.apache.camel.util.ServiceHelper.startService(ServiceHelper.java:62)
at org.apache.camel.util.ServiceHelper.startService(ServiceHelper.java:52)
at org.apache.camel.util.ServiceHelper.startServices(ServiceHelper.java:73)
at org.apache.camel.processor.DelegateAsyncProcessor.doStart(DelegateAsyncProcessor.java:78)
at org.apache.camel.processor.interceptor.TraceInterceptor.doStart(TraceInterceptor.java:358)
at org.apache.camel.support.ServiceSupport.start(ServiceSupport.java:60)
at org.apache.camel.util.ServiceHelper.startService(ServiceHelper.java:62)
at org.apache.camel.util.ServiceHelper.startService(ServiceHelper.java:52)
at org.apache.camel.util.ServiceHelper.startServices(ServiceHelper.java:73)
at org.apache.camel.processor.DelegateAsyncProcessor.doStart(DelegateAsyncProcessor.java:78)
at org.apache.camel.support.ServiceSupport.start(ServiceSupport.java:60)
at org.apache.camel.util.ServiceHelper.startService(ServiceHelper.java:62)
at org.apache.camel.util.ServiceHelper.startService(ServiceHelper.java:52)
at org.apache.camel.util.ServiceHelper.startServices(ServiceHelper.java:73)
at org.apache.camel.processor.RedeliveryErrorHandler.doStart(RedeliveryErrorHandler.java:1052)
at org.apache.camel.support.ChildServiceSupport.start(ChildServiceSupport.java:41)
at org.apache.camel.support.ChildServiceSupport.start(ChildServiceSupport.java:28)
at org.apache.camel.util.ServiceHelper.startService(ServiceHelper.java:62)
at org.apache.camel.util.ServiceHelper.startService(ServiceHelper.java:52)
at org.apache.camel.util.ServiceHelper.startServices(ServiceHelper.java:73)
at org.apache.camel.processor.interceptor.DefaultChannel.doStart(DefaultChannel.java:152)
at org.apache.camel.support.ServiceSupport.start(ServiceSupport.java:60)
at org.apache.camel.util.ServiceHelper.startService(ServiceHelper.java:62)
at org.apache.camel.util.ServiceHelper.startService(ServiceHelper.java:52)
at org.apache.camel.util.ServiceHelper.startServices(ServiceHelper.java:73)
at org.apache.camel.processor.DelegateAsyncProcessor.doStart(DelegateAsyncProcessor.java:78)
at org.apache.camel.support.ServiceSupport.start(ServiceSupport.java:60)
at org.apache.camel.util.ServiceHelper.startService(ServiceHelper.java:62)
at org.apache.camel.util.ServiceHelper.startService(ServiceHelper.java:52)
at org.apache.camel.util.ServiceHelper.startServices(ServiceHelper.java:73)
at org.apache.camel.processor.DelegateAsyncProcessor.doStart(DelegateAsyncProcessor.java:78)
at org.apache.camel.processor.UnitOfWorkProcessor.doStart(UnitOfWorkProcessor.java:88)
at org.apache.camel.support.ServiceSupport.start(ServiceSupport.java:60)
at org.apache.camel.util.ServiceHelper.startService(ServiceHelper.java:62)
at org.apache.camel.util.ServiceHelper.startService(ServiceHelper.java:52)
at org.apache.camel.util.ServiceHelper.startServices(ServiceHelper.java:73)
at org.apache.camel.processor.DelegateAsyncProcessor.doStart(DelegateAsyncProcessor.java:78)
at org.apache.camel.support.ServiceSupport.start(ServiceSupport.java:60)
at org.apache.camel.util.ServiceHelper.startService(ServiceHelper.java:62)
at org.apache.camel.util.ServiceHelper.startService(ServiceHelper.java:52)
at org.apache.camel.util.ServiceHelper.startServices(ServiceHelper.java:73)
at org.apache.camel.processor.DelegateAsyncProcessor.doStart(DelegateAsyncProcessor.java:78)
at org.apache.camel.support.ServiceSupport.start(ServiceSupport.java:60)
at org.apache.camel.util.ServiceHelper.startService(ServiceHelper.java:62)
at org.apache.camel.impl.RouteService.startChildService(RouteService.java:323)
at org.apache.camel.impl.RouteService.warmUp(RouteService.java:152)
at org.apache.camel.impl.DefaultCamelContext.doWarmUpRoutes(DefaultCamelContext.java:1927)
at org.apache.camel.impl.DefaultCamelContext.safelyStartRouteServices(DefaultCamelContext.java:1855)
at org.apache.camel.impl.DefaultCamelContext.doStartOrResumeRoutes(DefaultCamelContext.java:1648)
at org.apache.camel.impl.DefaultCamelContext.doStartCamel(DefaultCamelContext.java:1536)
at org.apache.camel.impl.DefaultCamelContext.doStart(DefaultCamelContext.java:1413)
at org.apache.camel.support.ServiceSupport.start(ServiceSupport.java:60)
at org.apache.camel.impl.DefaultCamelContext.start(DefaultCamelContext.java:1381)
at org.apache.camel.test.junit4.CamelTestSupport.startCamelContext(CamelTestSupport.java:406)
at org.apache.camel.test.junit4.CamelTestSupport.doSetUp(CamelTestSupport.java:277)
at org.apache.camel.test.junit4.CamelTestSupport.setUp(CamelTestSupport.java:204)
at org.apache.camel.component.hawtdb.HawtDBAggregateDiscardOnTimeoutTest.setUp(HawtDBAggregateDiscardOnTimeoutTest.java:40)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:27)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
at org.junit.rules.TestWatchman$1.evaluate(TestWatchman.java:48)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.apache.maven.surefire.junit4.JUnit4TestSet.execute(JUnit4TestSet.java:53)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:119)
at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:101)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.maven.surefire.booter.ProviderFactory$ClassLoaderProxy.invoke(ProviderFactory.java:103)
at $Proxy0.invoke(Unknown Source)
at org.apache.maven.surefire.booter.SurefireStarter.invokeProvider(SurefireStarter.java:150)
at org.apache.maven.surefire.booter.SurefireStarter.runSuitesInProcess(SurefireStarter.java:74)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:69)