Bamboo git branch automatic deletion

2013-01-28 13:48:28,629 INFO [2-DelayedChangeDetectionThread:pool-5-thread-1] [RetryingTaskExecutor] Task 'Collecting changes for PROJ1-PLAN11' was unsuccessful. Run 2 / 2. Exception thrown when running task 'Collecting changes for PROJ1-PLAN11', with message: Cannot determine head revision of 'file:///Users/akhachatryan/dev/Repositories/GitTest' on branch 'next'. Branch has probably been removed.
2013-01-28 13:48:28,629 ERROR [2-DelayedChangeDetectionThread:pool-5-thread-1] [RetryingTaskExecutor] Failed to run task 'Collecting changes for PROJ1-PLAN11' after 2 attempts. Task was not executed.
2013-01-28 13:48:28,629 ERROR [2-DelayedChangeDetectionThread:pool-5-thread-1] [RetryingTaskExecutor] Exception being rethrown
2013-01-28 13:48:28,630 ERROR [2-DelayedChangeDetectionThread:pool-5-thread-1] [ChainExecutionManagerImpl] Errors getting changes for PROJ1-PLAN11-1
java.lang.RuntimeException: com.atlassian.bamboo.repository.InvalidRepositoryException: Cannot determine head revision of 'file:///Users/akhachatryan/dev/Repositories/GitTest' on branch 'next'. Branch has probably been removed.
	at com.atlassian.bamboo.executor.RetryingTaskExecutor.rerun(RetryingTaskExecutor.java:132)
	at com.atlassian.bamboo.executor.RetryingTaskExecutor.runTask(RetryingTaskExecutor.java:88)
	at com.atlassian.bamboo.executor.RetryingTaskExecutor.retry(RetryingTaskExecutor.java:191)
	at com.atlassian.bamboo.executor.RetryingTaskExecutor.retry(RetryingTaskExecutor.java:176)
	at com.atlassian.bamboo.v2.trigger.DefaultChangeDetectionManager.collectionChangesWithRetry(DefaultChangeDetectionManager.java:457)
	at com.atlassian.bamboo.v2.trigger.DefaultChangeDetectionManager.collectChangesSinceLastBuildInternal(DefaultChangeDetectionManager.java:318)
	at com.atlassian.bamboo.v2.trigger.DefaultChangeDetectionManager.collectChangesSinceRevisions(DefaultChangeDetectionManager.java:251)
	at com.atlassian.bamboo.v2.trigger.DefaultChangeDetectionManager.collectChangesSinceRevisions(DefaultChangeDetectionManager.java:161)
	at com.atlassian.bamboo.v2.trigger.DefaultChangeDetectionManager.collectAllChangesSinceLastBuild(DefaultChangeDetectionManager.java:127)
	at com.atlassian.bamboo.v2.trigger.ManualBuildDetectionAction.performDelayedChangeDetection(ManualBuildDetectionAction.java:113)
	at com.atlassian.bamboo.chains.ChainExecutionManagerImpl$2.getChainState(ChainExecutionManagerImpl.java:199)
	at com.atlassian.bamboo.chains.ChainExecutionManagerImpl.tryStartChainState(ChainExecutionManagerImpl.java:252)
	at com.atlassian.bamboo.chains.ChainExecutionManagerImpl.delayedStart(ChainExecutionManagerImpl.java:189)
	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.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:304)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
	at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
	at $Proxy78.delayedStart(Unknown Source)
	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.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:304)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:198)
	at $Proxy79.delayedStart(Unknown Source)
	at com.atlassian.bamboo.plan.PlanExecutionManagerImpl$1$1$1.call(PlanExecutionManagerImpl.java:300)
	at com.atlassian.bamboo.plan.PlanExecutionManagerImpl$1$1$1.call(PlanExecutionManagerImpl.java:296)
	at com.atlassian.util.concurrent.ManagedLocks$ManagedLockImpl.withLock(ManagedLocks.java:324)
	at com.atlassian.bamboo.plan.PlanExecutionLockServiceImpl.lock(PlanExecutionLockServiceImpl.java:77)
	at com.atlassian.bamboo.plan.PlanExecutionManagerImpl.doWithProcessLock(PlanExecutionManagerImpl.java:467)
	at com.atlassian.bamboo.plan.PlanExecutionManagerImpl.access$200(PlanExecutionManagerImpl.java:48)
	at com.atlassian.bamboo.plan.PlanExecutionManagerImpl$1$1.run(PlanExecutionManagerImpl.java:295)
	at com.atlassian.bamboo.build.pipeline.concurrent.NamedThreadFactory$2.run(NamedThreadFactory.java:52)
	at java.lang.Thread.run(Thread.java:680)
Caused by: com.atlassian.bamboo.repository.InvalidRepositoryException: Cannot determine head revision of 'file:///Users/akhachatryan/dev/Repositories/GitTest' on branch 'next'. Branch has probably been removed.
	at com.atlassian.bamboo.plugins.git.NativeGitOperationHelper.obtainLatestRevision(NativeGitOperationHelper.java:508)
	at com.atlassian.bamboo.plugins.git.GitRepository.collectChangesSinceLastBuild(GitRepository.java:223)
	at com.atlassian.bamboo.plugins.git.GitRepository.collectChangesSinceLastBuild(GitRepository.java:211)
	at com.atlassian.bamboo.v2.trigger.DefaultChangeDetectionManager$1.call(DefaultChangeDetectionManager.java:461)
	at com.atlassian.bamboo.v2.trigger.DefaultChangeDetectionManager$1.call(DefaultChangeDetectionManager.java:458)
	at com.atlassian.bamboo.executor.RetryingTaskExecutor.rerun(RetryingTaskExecutor.java:108)
	... 39 more