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java.lang.NullPointerException: 	at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:187)	at com.google.common.cache.CustomConcurrentHashMap.getOrCompute(CustomConcurrentHashMap.java:3801)	at com.google.common.cache.ComputingCache.get(ComputingCache.java:46)	at com.google.common.cache.AbstractCache.getUnchecked(AbstractCache.java:49)	at com.atlassian.bamboo.security.acegi.acls.CachingSidRetrievalStrategy.getSids(CachingSidRetrievalStrategy.java:39)	at com.atlassian.bamboo.security.BambooPermissionManagerImpl.hasPermission(BambooPermissionManagerImpl.java:83)	at com.atlassian.bamboo.security.BambooCachingPermissionManagerFacade.hasPermission(BambooCachingPermissionManagerFacade.java:94)	at com.atlassian.bamboo.security.BambooCachingPermissionManagerFacade.hasPlanPermission(BambooCachingPermissionManagerFacade.java:89)	at com.atlassian.bamboo.resultsummary.search.LucenePermissionChecker$1.load(LucenePermissionChecker.java:34)	at com.atlassian.bamboo.resultsummary.search.LucenePermissionChecker$1.load(LucenePermissionChecker.java:28)	at com.google.common.cache.CustomConcurrentHashMap$ComputingValueReference.compute(CustomConcurrentHashMap.java:3426)	at com.google.common.cache.CustomConcurrentHashMap$Segment.compute(CustomConcurrentHashMap.java:2322)	at com.google.common.cache.CustomConcurrentHashMap$Segment.getOrCompute(CustomConcurrentHashMap.java:2291)	at com.google.common.cache.CustomConcurrentHashMap.getOrCompute(CustomConcurrentHashMap.java:3802)	at com.google.common.cache.ComputingCache.get(ComputingCache.java:46)	at com.google.common.cache.AbstractCache.getUnchecked(AbstractCache.java:49)	at com.atlassian.bamboo.resultsummary.search.LucenePermissionChecker.getCachedPlanPermission(LucenePermissionChecker.java:74)	at com.atlassian.bamboo.resultsummary.search.LucenePermissionChecker.hasPermissionForObject(LucenePermissionChecker.java:68)	at com.atlassian.bamboo.resultsummary.search.LucenePermissionChecker.hasDocPermission(LucenePermissionChecker.java:63)	at org.apache.lucene.search.FilteringTopFieldDocCollector.hasPermission(FilteringTopFieldDocCollector.java:54)	at org.apache.lucene.search.FilteringTopFieldDocCollector.access$100(FilteringTopFieldDocCollector.java:13)	at org.apache.lucene.search.FilteringTopFieldDocCollector$1.insertWithOverflow(FilteringTopFieldDocCollector.java:40)	at org.apache.lucene.search.TopFieldDocCollector.collect(TopFieldDocCollector.java:61)	at org.apache.lucene.search.BooleanScorer2.score(BooleanScorer2.java:320)	at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:146)	at com.atlassian.bamboo.resultsummary.search.IndexedBuildResultsSearcherImpl.search(IndexedBuildResultsSearcherImpl.java:136)	at com.atlassian.bamboo.resultsummary.search.IndexedBuildResultsSearcherImpl.access$100(IndexedBuildResultsSearcherImpl.java:50)	at com.atlassian.bamboo.resultsummary.search.IndexedBuildResultsSearcherImpl$1.perform(IndexedBuildResultsSearcherImpl.java:101)	at com.atlassian.bonnie.LuceneConnection.withSearch(LuceneConnection.java:260)	at com.atlassian.bamboo.resultsummary.search.IndexedBuildResultsSearcherImpl.search(IndexedBuildResultsSearcherImpl.java:90)	at sun.reflect.GeneratedMethodAccessor2737.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at com.atlassian.plugin.osgi.hostcomponents.impl.DefaultComponentRegistrar$ContextClassLoaderSettingInvocationHandler.invoke(DefaultComponentRegistrar.java:129)	at $Proxy227.search(Unknown Source)	at sun.reflect.GeneratedMethodAccessor2737.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)	at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.doInvoke(ServiceInvoker.java:58)	at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.invoke(ServiceInvoker.java:62)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invokeUnprivileged(ServiceTCCLInterceptor.java:56)	at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invoke(ServiceTCCLInterceptor.java:39)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.osgi.service.importer.support.LocalBundleContextAdvice.invoke(LocalBundleContextAdvice.java:59)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)	at $Proxy430.search(Unknown Source)	at com.atlassian.streams.bamboo.BambooAliasResultsSearcher.getResultsByUserNames(BambooAliasResultsSearcher.java:59)	at com.atlassian.streams.bamboo.BambooStreamsActivityProvider.getResultsSummaryFromPlans(BambooStreamsActivityProvider.java:178)	at com.atlassian.streams.bamboo.BambooStreamsActivityProvider.getResultSummaries(BambooStreamsActivityProvider.java:167)	at com.atlassian.streams.bamboo.BambooStreamsActivityProvider.access$100(BambooStreamsActivityProvider.java:87)	at com.atlassian.streams.bamboo.BambooStreamsActivityProvider$1.call(BambooStreamsActivityProvider.java:131)	at com.atlassian.streams.bamboo.BambooStreamsActivityProvider$1.call(BambooStreamsActivityProvider.java:124)	at com.atlassian.streams.internal.LocalActivityProvider$FeedFetcher.doInTransaction(LocalActivityProvider.java:201)	at com.atlassian.streams.internal.LocalActivityProvider$FeedFetcher.doInTransaction(LocalActivityProvider.java:184)	at com.atlassian.sal.core.transaction.HostContextTransactionTemplate$1.doInTransaction(HostContextTransactionTemplate.java:25)	at com.atlassian.sal.spring.component.SpringHostContextAccessor$1.doInTransaction(SpringHostContextAccessor.java:88)	at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:127)	at com.atlassian.sal.spring.component.SpringHostContextAccessor.doInTransaction(SpringHostContextAccessor.java:82)	at sun.reflect.GeneratedMethodAccessor451.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at com.atlassian.plugin.osgi.hostcomponents.impl.DefaultComponentRegistrar$ContextClassLoaderSettingInvocationHandler.invoke(DefaultComponentRegistrar.java:129)	at $Proxy216.doInTransaction(Unknown Source)	at sun.reflect.GeneratedMethodAccessor451.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at com.atlassian.plugin.osgi.bridge.external.HostComponentFactoryBean$DynamicServiceInvocationHandler.invoke(HostComponentFactoryBean.java:154)	at $Proxy216.doInTransaction(Unknown Source)	at com.atlassian.sal.core.transaction.HostContextTransactionTemplate.execute(HostContextTransactionTemplate.java:21)	at sun.reflect.GeneratedMethodAccessor453.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)	at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.doInvoke(ServiceInvoker.java:58)	at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.invoke(ServiceInvoker.java:62)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invokeUnprivileged(ServiceTCCLInterceptor.java:56)	at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invoke(ServiceTCCLInterceptor.java:39)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.osgi.service.importer.support.LocalBundleContextAdvice.invoke(LocalBundleContextAdvice.java:59)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)	at $Proxy612.execute(Unknown Source)	at com.atlassian.streams.internal.LocalActivityProvider$1$1.get(LocalActivityProvider.java:125)	at com.atlassian.streams.internal.LocalActivityProvider$1$1.get(LocalActivityProvider.java:122)	at com.atlassian.streams.common.PassThruSessionManager.withSession(PassThruSessionManager.java:16)	at com.atlassian.streams.common.SwitchingSessionManager.withSession(SwitchingSessionManager.java:30)	at sun.reflect.GeneratedMethodAccessor1537.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)	at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.doInvoke(ServiceInvoker.java:58)	at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.invoke(ServiceInvoker.java:62)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invokeUnprivileged(ServiceTCCLInterceptor.java:56)	at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invoke(ServiceTCCLInterceptor.java:39)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.osgi.service.importer.support.LocalBundleContextAdvice.invoke(LocalBundleContextAdvice.java:59)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)	at $Proxy619.withSession(Unknown Source)	at com.atlassian.streams.internal.LocalActivityProvider$1.call(LocalActivityProvider.java:121)	at com.atlassian.streams.internal.LocalActivityProvider$1.call(LocalActivityProvider.java:117)	at com.atlassian.streams.internal.FeedBuilder$ToFeedCallable$1.call(FeedBuilder.java:115)	at com.atlassian.streams.internal.FeedBuilder$ToFeedCallable$1.call(FeedBuilder.java:110)	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)	at java.util.concurrent.FutureTask.run(FutureTask.java:138)	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)	at java.util.concurrent.FutureTask.run(FutureTask.java:138)	at com.atlassian.util.concurrent.LimitedExecutor$Runner.run(LimitedExecutor.java:96)	at com.atlassian.sal.core.executor.ThreadLocalDelegateRunnable.run(ThreadLocalDelegateRunnable.java:34)	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)	at java.lang.Thread.run(Thread.java:662)