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java.lang.ArrayIndexOutOfBoundsException: -1	at scala.tools.nsc.backend.jvm.analysis.BackendUtils.enqInsnIndex$1(BackendUtils.scala:430)	at scala.tools.nsc.backend.jvm.analysis.BackendUtils.enqInsn$1(BackendUtils.scala:426)	at scala.tools.nsc.backend.jvm.analysis.BackendUtils.computeMaxLocalsMaxStack(BackendUtils.scala:477)	at scala.tools.nsc.backend.jvm.analysis.BackendUtils$AsmAnalyzer.(BackendUtils.scala:35)	at scala.tools.nsc.backend.jvm.opt.LocalOpt.removeUnreachableCodeImpl(LocalOpt.scala:488)	at scala.tools.nsc.backend.jvm.opt.LocalOpt.removalRound$2(LocalOpt.scala:275)	at scala.tools.nsc.backend.jvm.opt.LocalOpt.methodOptimizations(LocalOpt.scala:354)	at scala.tools.nsc.backend.jvm.opt.LocalOpt.$anonfun$methodOptimizations$1(LocalOpt.scala:195)	at scala.tools.nsc.backend.jvm.opt.LocalOpt.$anonfun$methodOptimizations$1$adapted(LocalOpt.scala:194)	at scala.collection.TraversableOnce.$anonfun$foldLeft$1(TraversableOnce.scala:157)	at scala.collection.TraversableOnce.$anonfun$foldLeft$1$adapted(TraversableOnce.scala:157)	at scala.collection.AbstractIterator.foreach(Iterator.scala:932)	at scala.collection.AbstractIterable.foreach(Iterable.scala:54)	at scala.collection.TraversableOnce.foldLeft(TraversableOnce.scala:157)	at scala.collection.TraversableOnce.foldLeft$(TraversableOnce.scala:155)	at scala.collection.AbstractTraversable.foldLeft(Traversable.scala:104)	at scala.tools.nsc.backend.jvm.opt.LocalOpt.methodOptimizations(LocalOpt.scala:194)	at scala.tools.nsc.backend.jvm.GenBCode$BCodePhase$Worker2.$anonfun$localOptimizations$1(GenBCode.scala:248)	at scala.tools.nsc.backend.jvm.GenBCode$BCodePhase$Worker2.localOptimizations(GenBCode.scala:248)	at scala.tools.nsc.backend.jvm.GenBCode$BCodePhase$Worker2.run(GenBCode.scala:267)	at scala.tools.nsc.backend.jvm.GenBCode$BCodePhase.buildAndSendToDisk(GenBCode.scala:384)	at scala.tools.nsc.backend.jvm.GenBCode$BCodePhase.run(GenBCode.scala:350)	at scala.tools.nsc.Global$Run.compileUnitsInternal(Global.scala:1404)	at scala.tools.nsc.Global$Run.compileUnits(Global.scala:1389)	at scala.tools.nsc.Global$Run.compileSources(Global.scala:1384)	at scala.tools.nsc.Global$Run.compile(Global.scala:1478)	at xsbt.CachedCompiler0.run(CompilerInterface.scala:116)