java.lang.AssertionError: Wrong diagnostic handler: com.sun.tools.javac.util.Log$DiscardDiagnosticHandler@59e9fa13
Thread dump:
Thread-39
	sun.misc.Unsafe.park(Native Method)
	java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
	java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
	java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
	java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067)
	java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
	java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	java.lang.Thread.run(Thread.java:745)
Framework Active Thread
	java.lang.Object.wait(Native Method)
	org.eclipse.osgi.framework.internal.core.Framework.run(Framework.java:1862)
	java.lang.Thread.run(Thread.java:745)
Inactive RequestProcessor thread [Was:Flush UI Logs/org.netbeans.modules.uihandler.UIHandler$2WriteOut]
	java.lang.Object.wait(Nativ
   at com.sun.tools.javac.util.Assert.error(Assert.java:133)
   at com.sun.tools.javac.util.Assert.check(Assert.java:86)
   at com.sun.tools.javac.util.Log.popDiagnosticHandler(Log.java:481)
   at com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.showDiagnostics(JavacProcessingEnvironment.java:1075)
   at com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.java:1131)
   at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1230)
   at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1117)
   at com.sun.tools.javac.main.JavaCompiler.complete(JavaCompiler.java:825)
   at com.sun.tools.javac.main.JavaCompiler$1.complete(JavaCompiler.java:318)
   at com.sun.tools.javac.jvm.ClassReader.fillIn(ClassReader.java:2589)
   at com.sun.tools.javac.jvm.ClassReader.complete(ClassReader.java:2484)
   at com.sun.tools.javac.jvm.ClassReader.access$000(ClassReader.java:77)
   at com.sun.tools.javac.jvm.ClassReader$1.complete(ClassReader.java:244)
   at com.sun.tools.javac.code.Symbol.complete(Symbol.java:577)
   at com.sun.tools.javac.code.Symbol$ClassSymbol.complete(Symbol.java:1053)
   at com.sun.tools.javac.jvm.ClassReader.loadClass(ClassReader.java:2678)
   at com.sun.tools.javac.comp.Resolve.loadClass(Resolve.java:1890)
   at com.sun.tools.javac.comp.Resolve.findIdentInPackage(Resolve.java:2136)
   at com.sun.tools.javac.comp.Attr$IdentAttributer.visitMemberSelect(Attr.java:421)
   at com.sun.tools.javac.comp.Attr$IdentAttributer.visitMemberSelect(Attr.java:412)
   at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:1909)
   at com.sun.tools.javac.comp.Attr.attribIdent(Attr.java:408)
   at com.sun.tools.javac.main.JavaCompiler.resolveIdent(JavaCompiler.java:724)
   at com.sun.tools.javac.model.JavacElements.binaryNameToClassSymbol(JavacElements.java:129)
   at com.sun.tools.javac.model.JavacElements.getTypeElementByBinaryName(JavacElements.java:119)
   at org.netbeans.api.java.source.ElementHandle.getTypeElementByBinaryName(ElementHandle.java:622)
   at org.netbeans.api.java.source.ElementHandle.resolveImpl(ElementHandle.java:175)
   at org.netbeans.api.java.source.ElementHandle.resolve(ElementHandle.java:136)
   at org.netbeans.api.java.source.TreePathHandle$TreeDelegate.resolveElement(TreePathHandle.java:539)
   at org.netbeans.api.java.source.TreePathHandle.resolveElement(TreePathHandle.java:188)
   at org.netbeans.modules.refactoring.java.ui.RenamePanel$2.run(RenamePanel.java:170)
   at org.netbeans.modules.refactoring.java.ui.RenamePanel$2.run(RenamePanel.java:138)
   at org.netbeans.api.java.source.JavaSource$MultiTask.run(JavaSource.java:493)
   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.api.java.source.JavaSource.runUserActionTaskImpl(JavaSource.java:443)
   at org.netbeans.api.java.source.JavaSource.runUserActionTask(JavaSource.java:414)
   at org.netbeans.modules.refactoring.java.ui.RenamePanel.initialize(RenamePanel.java:200)
   at org.netbeans.modules.refactoring.spi.impl.ParametersPanel$11.run(ParametersPanel.java:641)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1423)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)