We upgraded our hudson version and started seeing the following failure.
Using hudson 1.378 and sonar plugin 1.5

[INFO] Reactor Summary:
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..
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[INFO] BUILD SUCCESSFUL
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[INFO] Total time: 2 minutes 40 seconds
[INFO] Finished at: Thu Sep 30 09:05:54 EEST 2010
[INFO] Final Memory: 121M/473M
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Waiting for Hudson to finish collecting data
channel stopped
Skipping sonar analysis due to bad build status FAILURE
Finished: FAILURE