java.lang.AssertionError: Wrong diagnostic handler: com.sun.tools.javac.util.Log$DeferredDiagnosticHandler@1e7f46d1
Thread dump:
Deadlock Detector
	java.lang.Thread.sleep(Native Method)
	org.netbeans.modules.deadlock.detector.Detector.run(Detector.java:138)
	java.lang.Thread.run(Thread.java:745)
Bundle File Closer
	java.lang.Object.wait(Native Method)
	java.lang.Object.wait(Object.java:502)
	org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.getNextEvent(EventManager.java:400)
	org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:336)
GlassFish Status Tasks
	sun.misc.Unsafe.park(Native Method)
	java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
	java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
	java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1088)
	java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoo
   at com.sun.tools.javac.util.Assert.error(Assert.java:133)
   at com.sun.tools.javac.util.Assert.check(Assert.java:86)
   at com.sun.tools.javac.util.Log.popDiagnosticHandler(Log.java:481)
   at com.sun.tools.javac.api.JavacTrees.attribStatToTree(JavacTrees.java:888)
   at com.sun.tools.javac.api.JavacTrees.getAttrContext(JavacTrees.java:847)
   at com.sun.tools.javac.api.JavacTrees.getScope(JavacTrees.java:726)
   at com.sun.tools.javac.api.JavacTrees.getScope(JavacTrees.java:124)
   at org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery.getEnvImpl(JavaCompletionProvider.java:5613)
   at org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery.getCompletionEnvironment(JavaCompletionProvider.java:5568)
   at org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery.resolveToolTip(JavaCompletionProvider.java:464)
   at org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery.run(JavaCompletionProvider.java:452)
   at org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery$Task.run(JavaCompletionProvider.java:5902)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:598)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:155)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:139)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:206)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:203)
   at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:176)
   at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:360)
   at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:74)
   at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:203)
   at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:106)
   at org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery.query(JavaCompletionProvider.java:320)
   at org.netbeans.spi.editor.completion.support.AsyncCompletionTask.run(AsyncCompletionTask.java:223)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1423)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)