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Randomly failed just once in 2 week history at: org.netbeans.modules.settings.convertors.SerialDataConvertorTest.test50177ProblemSimulation(SerialDataConvertorTest.java:79)
I didn't find in xtest history no one failing test any more. This bug can't be reproduced. So, WONTFIX - will be reopened as soon as this test fails again.