Bamboo's build process hangs indefinitely after successfully building the project, leaving it in the "This build is being built" -state. This happens on our system with a single simple project on a clean install of Bamboo. The few last lines of atlassian-bamboo.log reads

2006-11-29 11:57:36,539 INFO [output stream pumper] [StreamToListPumper] [TEST-MAIN] BUILD SUCCESSFUL
2006-11-29 11:57:36,539 INFO [output stream pumper] [StreamToListPumper] [TEST-MAIN] Total time: 2 seconds
2006-11-29 11:57:36,569 INFO [BAM::BuildPipeline::BuildExecutor] [AbstractBuilder] Completed building build "Test Project - Main Build" return code = 0
2006-11-29 11:57:36,631 INFO [BAM::BuildPipeline::BuildExecutor] [DefaultBuildExecutor] Build log size: 26
2006-11-29 11:57:36,632 INFO [BAM::BuildPipeline::BuildExecutor] [DefaultBuildExecutor] Setting build artifacts

I've reproduced this consistently with different projects both with and without project artifacts. Here are the stack traces for the builder threads:

"BAM::BuildPipeline::BuildExecutor" daemon prio=1 tid=0x082bd128 nid=0x6f2d in Object.wait() [0x64555000..0x6455
6130]
at java.lang.Object.wait(Native Method)

• waiting on <0x71ff3cc0> (a java.lang.Object)
  at java.lang.Object.wait(Object.java:474)
  at EDU.oswego.cs.dl.util.concurrent.LinkedQueue.take(Unknown Source)
• locked <0x71ff3cc0> (a java.lang.Object)
  at com.atlassian.bamboo.builder.DefaultBuildExecutor.doTask(DefaultBuildExecutor.java:55)
  at com.atlassian.bamboo.container.BambooTask.run(BambooTask.java:33)
  at java.lang.Thread.run(Thread.java:595)

"BAM::PipelineSelector" daemon prio=1 tid=0x08c12dd8 nid=0x6f2c in Object.wait() [0x646d8000..0x646d8eb0]
at java.lang.Object.wait(Native Method)

• waiting on <0x71ffb520> (a java.lang.Object)
  at java.lang.Object.wait(Object.java:474)
  at EDU.oswego.cs.dl.util.concurrent.LinkedQueue.take(Unknown Source)
• locked <0x71ffb520> (a java.lang.Object)
  at com.atlassian.bamboo.buildqueue.PipelineSelector.doTask(PipelineSelector.java:28)
  at com.atlassian.bamboo.container.BambooTask.run(BambooTask.java:33)
  at java.lang.Thread.run(Thread.java:595)