java.lang.AssertionError: assertion failed: Array.type.trait Array0 does no longer exist, phase = parser
        at scala.Predef$.assert(Predef.java:92)
        at scala.tools.nsc.symtab.Types$adaptToNewRunMap$.adaptToNewRun(Types.java:3168)
        at scala.tools.nsc.symtab.Types$adaptToNewRunMap$.apply(Types.java:3206)
        at scala.tools.nsc.symtab.Types$adaptToNewRunMap$.apply(Types.java:3159)
        at scala.List$.loop$1(List.java:293)
        at scala.List$.mapConserve(List.java:310)
        at scala.tools.nsc.symtab.Types$adaptToNewRunMap$.apply(Types.java:3217)
        at scala.tools.nsc.symtab.Types$adaptToNewRunMap$.apply(Types.java:3211)
        at scala.tools.nsc.symtab.Symbols$Symbol.adaptToNewRun$1(Symbols.java:653)
        at scala.tools.nsc.symtab.Symbols$Symbol.adaptInfos(Symbols.java:657)
        at scala.tools.nsc.symtab.Symbols$Symbol.rawInfo(Symbols.java:616)
        at scala.tools.nsc.symtab.Symbols$Symbol.info(Symbols.java:567)
        at scala.tools.nsc.symtab.Definitions$definitions$.getMember(Definitions.java:332)
        at scala.tools.nsc.symtab.Definitions$definitions$.Array_apply(Definitions.java:118)
        at scala.tools.nsc.typechecker.Typers$Typer.typedApply$1(Typers.java:2664)
        at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.java:3260)
        at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.java:3361)
        at scala.tools.nsc.typechecker.Typers$Typer.typedAnnotation(Typers.java:1973)
        at scala.tools.nsc.typechecker.Typers$Typer.typedAnnotation(Typers.java:1955)
        at scala.tools.nsc.typechecker.Typers$Typer.typedAnnotation(Typers.java:1952)
        at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$7.apply(Namers.java:824)
        at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$7.apply(Namers.java:823)
        at scala.List.map(List.java:805)
        at scala.tools.nsc.typechecker.Namers$Namer.typeSig(Namers.java:823)
        at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$typeCompleter$1.apply(Namers.java:415)
        at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$typeCompleter$1.apply(Namers.java:413)
        at scala.tools.nsc.typechecker.Namers$$anon$1.complete(Namers.java:982)
        at scala.tools.nsc.symtab.Symbols$Symbol.info(Symbols.java:556)
        at scala.tools.nsc.symtab.Symbols$Symbol.tpe(Symbols.java:535)
        at org.netbeans.modules.scala.editing.ScalaCompletionProposal$FunctionProposal.<init>(ScalaCompletionProposal.java:190)
        at org.netbeans.modules.scala.editing.ScalaCodeCompletion.addLocals(ScalaCodeCompletion.java:512)
        at org.netbeans.modules.scala.editing.ScalaCodeCompletion.complete(ScalaCodeCompletion.java:466)
        at org.netbeans.modules.csl.editor.completion.GsfCompletionProvider$JavaCompletionQuery.addCodeCompletionItems(GsfCompletionProvider.java:607)
        at org.netbeans.modules.csl.editor.completion.GsfCompletionProvider$JavaCompletionQuery.resolveCompletion(GsfCompletionProvider.java:595)
        at org.netbeans.modules.csl.editor.completion.GsfCompletionProvider$JavaCompletionQuery.access$400(GsfCompletionProvider.java:243)
        at org.netbeans.modules.csl.editor.completion.GsfCompletionProvider$JavaCompletionQuery$1.run(GsfCompletionProvider.java:333)
        at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:129)
        at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:113)
        at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:189)
        at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:99)
        at org.netbeans.modules.csl.editor.completion.GsfCompletionProvider$JavaCompletionQuery.query(GsfCompletionProvider.java:319)
        at org.netbeans.spi.editor.completion.support.AsyncCompletionTask.run(AsyncCompletionTask.java:218)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:577)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1030)