java.lang.AssertionError: isSubtype METHOD at com.sun.tools.javac.code.Types$4.visitType(Types.java:1031) at com.sun.tools.javac.code.Types$4.visitType(Types.java:1007) at com.sun.tools.javac.code.Types$DefaultTypeVisitor.visitMethodType(Types.java:4703) at com.sun.tools.javac.code.Type$MethodType.accept(Type.java:1459) at com.sun.tools.javac.code.Types$DefaultTypeVisitor.visit(Types.java:4699) at com.sun.tools.javac.code.Types.isSubtype(Types.java:1003) at com.sun.tools.javac.code.Types.isSubtype(Types.java:974) at com.sun.tools.javac.code.Types.isSubtypeUncheckedInternal(Types.java:929) at com.sun.tools.javac.code.Types.isSubtypeUnchecked(Types.java:915) at com.sun.tools.javac.comp.Resolve$MethodCheckContext.compatible(Resolve.java:980) at com.sun.tools.javac.comp.Check.checkType(Check.java:571) at com.sun.tools.javac.comp.Attr$ResultInfo.check(Attr.java:500) at com.sun.tools.javac.comp.Resolve$MethodResultInfo.check(Resolve.java:1028) at com.sun.tools.javac.comp.Resolve$4.checkArg(Resolve.java:843) at com.sun.tools.javac.comp.Resolve$AbstractMethodCheck.argumentsAcceptable(Resolve.java:748) at com.sun.tools.javac.comp.Resolve$4.argumentsAcceptable(Resolve.java:852) at com.sun.tools.javac.comp.Resolve.rawInstantiate(Resolve.java:592) at com.sun.tools.javac.comp.Resolve.selectBest(Resolve.java:1478) at com.sun.tools.javac.comp.Resolve.findMethodInScope(Resolve.java:1659) at com.sun.tools.javac.comp.Resolve.findMethod(Resolve.java:1728) at com.sun.tools.javac.comp.Resolve.findMethod(Resolve.java:1702) at com.sun.tools.javac.comp.Resolve.findFun(Resolve.java:1860) at com.sun.tools.javac.comp.Resolve$8.doLookup(Resolve.java:2377) at com.sun.tools.javac.comp.Resolve$BasicLookupHelper.lookup(Resolve.java:3019) at com.sun.tools.javac.comp.Resolve.lookupMethod(Resolve.java:3269) at com.sun.tools.javac.comp.Resolve.lookupMethod(Resolve.java:3254) at com.sun.tools.javac.comp.Resolve.resolveMethod(Resolve.java:2373) at com.sun.tools.javac.comp.Attr.visitIdent(Attr.java:3494) at com.sun.tools.javac.tree.JCTree$JCIdent.accept(JCTree.java:2194) at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:496) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:637) at com.sun.tools.javac.comp.Attr.visitApply(Attr.java:1923) at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1604) at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:496) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:637) at com.sun.tools.javac.comp.Attr.attribExpr(Attr.java:683) at com.sun.tools.javac.comp.Attr.visitExec(Attr.java:1693) at com.sun.tools.javac.tree.JCTree$JCExpressionStatement.accept(JCTree.java:1422) at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:496) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:637) at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:707) at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:731) at com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:1210) at org.netbeans.lib.nbjavac.services.NBAttr.visitBlock(NBAttr.java:82) at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:990) at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:496) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:637) at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:707) at com.sun.tools.javac.comp.Attr.attribStatToTree(Attr.java:412) at com.sun.tools.javac.api.JavacTrees.attribStatToTree(JavacTrees.java:979) at com.sun.tools.javac.api.JavacTrees.getAttrContext(JavacTrees.java:938) at com.sun.tools.javac.api.JavacTrees.getScope(JavacTrees.java:797) at com.sun.tools.javac.api.JavacTrees.getScope(JavacTrees.java:157) at org.netbeans.modules.debugger.jpda.projects.AST2Bytecode.matchSourceTree2Bytecode(AST2Bytecode.java:220) at org.netbeans.modules.debugger.jpda.projects.EditorContextSupport.computeOperations(EditorContextSupport.java:1062) at org.netbeans.modules.debugger.jpda.projects.PreferredCCParser$3.call(PreferredCCParser.java:206) at org.netbeans.modules.debugger.jpda.projects.PreferredCCParser$3.call(PreferredCCParser.java:198) at org.netbeans.modules.debugger.jpda.projects.PreferredCCParser.runGuarded(PreferredCCParser.java:678) at org.netbeans.modules.debugger.jpda.projects.PreferredCCParser.getOperations(PreferredCCParser.java:198) at org.netbeans.modules.debugger.jpda.projects.EditorContextSupport.getOperations(EditorContextSupport.java:1414) at org.netbeans.modules.debugger.jpda.projectsui.EditorContextImpl.getOperations(EditorContextImpl.java:787) at org.netbeans.modules.debugger.jpda.ExpressionPool.createExpressionAt(ExpressionPool.java:211) at org.netbeans.modules.debugger.jpda.ExpressionPool.getExpressionAt(ExpressionPool.java:107) at org.netbeans.modules.debugger.jpda.actions.JPDAMethodChooserUtils.init(JPDAMethodChooserUtils.java:139) at org.netbeans.modules.debugger.jpda.actions.JPDAMethodChooserUtils.init(JPDAMethodChooserUtils.java:116) at org.netbeans.modules.debugger.jpda.ui.actions.MethodChooserSupport.init(MethodChooserSupport.java:161) at org.netbeans.modules.debugger.jpda.ui.actions.JPDAMethodChooserFactoryUIImpl.initChooserUI(JPDAMethodChooserFactoryUIImpl.java:65) at org.netbeans.modules.debugger.jpda.actions.StepIntoActionProvider.doMethodSelection(StepIntoActionProvider.java:199) at org.netbeans.modules.debugger.jpda.actions.StepIntoActionProvider.runAction(StepIntoActionProvider.java:139) at org.netbeans.modules.debugger.jpda.actions.StepIntoActionProvider$1.run(StepIntoActionProvider.java:128) at org.netbeans.modules.debugger.jpda.actions.JPDADebuggerActionProvider$1.run(JPDADebuggerActionProvider.java:200) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443) at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68) at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303) at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058) Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.AssertionError: isSubtype METHOD at org.openide.util.RequestProcessor.post(RequestProcessor.java:420) at org.netbeans.modules.debugger.jpda.actions.JPDADebuggerActionProvider.doLazyAction(JPDADebuggerActionProvider.java:192) at org.netbeans.modules.debugger.jpda.actions.StepIntoActionProvider.postAction(StepIntoActionProvider.java:124) at org.netbeans.spi.debugger.ActionsProvider$ContextAware.postAction(ActionsProvider.java:264) at org.netbeans.api.debugger.ActionsManager.postAction(ActionsManager.java:257) at org.netbeans.modules.debugger.ui.actions.DebuggerAction.actionPerformed(DebuggerAction.java:104) at org.openide.windows.TopComponent.processKeyBinding(TopComponent.java:1176) at javax.swing.JComponent.processKeyBindings(JComponent.java:2943) at javax.swing.JComponent.processKeyEvent(JComponent.java:2845) at java.awt.Component.processEvent(Component.java:6312) at java.awt.Container.processEvent(Container.java:2236) at java.awt.Component.dispatchEventImpl(Component.java:4891) at java.awt.Container.dispatchEventImpl(Container.java:2294) at java.awt.Component.dispatchEvent(Component.java:4713) at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1954) at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:806) at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1074) at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:945) at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:771) at java.awt.Component.dispatchEventImpl(Component.java:4762) at java.awt.Container.dispatchEventImpl(Container.java:2294) at java.awt.Window.dispatchEventImpl(Window.java:2750) at java.awt.Component.dispatchEvent(Component.java:4713) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758) at java.awt.EventQueue.access$500(EventQueue.java:97) at java.awt.EventQueue$3.run(EventQueue.java:709) at java.awt.EventQueue$3.run(EventQueue.java:703) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86) at java.awt.EventQueue$4.run(EventQueue.java:731) at java.awt.EventQueue$4.run(EventQueue.java:729) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76) at java.awt.EventQueue.dispatchEvent(EventQueue.java:728) at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93) at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)