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    Root Cause Analysis

    1. java.lang.ClassCastException

      org.scalaide.core.internal.compiler.ScalaPresentationCompiler cannot be cast to scala.tools.nsc.interactive.CompilerControl

      at scala.tools.eclipse.scalatest.launching.ScalaTestLaunchShortcut$$anonfun$isScalaTestSuite$2.apply()
    2. scala.tools.eclipse
      ScalaTestLaunchShortcut$$anonfun$isScalaTestSuite$2.apply
      1. scala.tools.eclipse.scalatest.launching.ScalaTestLaunchShortcut$$anonfun$isScalaTestSuite$2.apply(ScalaTestLaunchShortcut.scala:194)
      2. scala.tools.eclipse.scalatest.launching.ScalaTestLaunchShortcut$$anonfun$isScalaTestSuite$2.apply(ScalaTestLaunchShortcut.scala:189)
      2 frames
    3. org.scalaide.core
      PresentationCompilerProxy$$anonfun$internal$1.apply
      1. org.scalaide.core.internal.compiler.PresentationCompilerProxy$$anonfun$internal$1.apply(PresentationCompilerProxy.scala:105)
      2. org.scalaide.core.internal.compiler.PresentationCompilerProxy$$anonfun$internal$1.apply(PresentationCompilerProxy.scala:104)
      2 frames
    4. Scala
      Option.flatMap
      1. scala.Option.flatMap(Option.scala:171)
      1 frame
    5. org.scalaide.core
      PresentationCompilerProxy.apply
      1. org.scalaide.core.internal.compiler.PresentationCompilerProxy.internal(PresentationCompilerProxy.scala:104)
      2. org.scalaide.core.internal.compiler.PresentationCompilerProxy.apply(PresentationCompilerProxy.scala:62)
      2 frames
    6. scala.tools.eclipse
      ScalaTestLaunchShortcut$$anonfun$5.apply
      1. scala.tools.eclipse.scalatest.launching.ScalaTestLaunchShortcut$.isScalaTestSuite(ScalaTestLaunchShortcut.scala:189)
      2. scala.tools.eclipse.scalatest.launching.ScalaTestLaunchShortcut$$anonfun$5.apply(ScalaTestLaunchShortcut.scala:222)
      3. scala.tools.eclipse.scalatest.launching.ScalaTestLaunchShortcut$$anonfun$5.apply(ScalaTestLaunchShortcut.scala:222)
      3 frames
    7. Scala
      ArrayOps$ofRef.find
      1. scala.collection.IndexedSeqOptimized$$anonfun$1.apply(IndexedSeqOptimized.scala:50)
      2. scala.collection.IndexedSeqOptimized$$anonfun$1.apply(IndexedSeqOptimized.scala:50)
      3. scala.collection.IndexedSeqOptimized$class.segmentLength(IndexedSeqOptimized.scala:195)
      4. scala.collection.mutable.ArrayOps$ofRef.segmentLength(ArrayOps.scala:186)
      5. scala.collection.GenSeqLike$class.prefixLength(GenSeqLike.scala:93)
      6. scala.collection.mutable.ArrayOps$ofRef.prefixLength(ArrayOps.scala:186)
      7. scala.collection.IndexedSeqOptimized$class.find(IndexedSeqOptimized.scala:50)
      8. scala.collection.mutable.ArrayOps$ofRef.find(ArrayOps.scala:186)
      8 frames
    8. scala.tools.eclipse
      ScalaTestMainTab$$anonfun$2$$anonfun$apply$7.apply
      1. scala.tools.eclipse.scalatest.launching.ScalaTestLaunchShortcut$.containsScalaTestSuite(ScalaTestLaunchShortcut.scala:222)
      2. scala.tools.eclipse.scalatest.launching.ScalaTestMainTab$$anonfun$2$$anonfun$apply$7.apply(ScalaTestMainTab.scala:310)
      3. scala.tools.eclipse.scalatest.launching.ScalaTestMainTab$$anonfun$2$$anonfun$apply$7.apply(ScalaTestMainTab.scala:310)
      3 frames
    9. Scala
      TraversableLike$WithFilter.map
      1. scala.collection.TraversableLike$WithFilter$$anonfun$map$2.apply(TraversableLike.scala:728)
      2. scala.collection.immutable.HashSet$HashSet1.foreach(HashSet.scala:322)
      3. scala.collection.immutable.HashSet$HashTrieSet.foreach(HashSet.scala:978)
      4. scala.collection.TraversableLike$WithFilter.map(TraversableLike.scala:727)
      4 frames
    10. scala.tools.eclipse
      ScalaTestMainTab$$anonfun$2.apply
      1. scala.tools.eclipse.scalatest.launching.ScalaTestMainTab$$anonfun$2.apply(ScalaTestMainTab.scala:308)
      2. scala.tools.eclipse.scalatest.launching.ScalaTestMainTab$$anonfun$2.apply(ScalaTestMainTab.scala:307)
      2 frames
    11. Scala
      ArrayOps$ofRef.flatMap
      1. scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:252)
      2. scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:252)
      3. scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)
      4. scala.collection.mutable.ArrayOps$ofRef.foreach(ArrayOps.scala:186)
      5. scala.collection.TraversableLike$class.flatMap(TraversableLike.scala:252)
      6. scala.collection.mutable.ArrayOps$ofRef.flatMap(ArrayOps.scala:186)
      6 frames
    12. scala.tools.eclipse
      ScalaTestMainTab$$anon$5.widgetSelected
      1. scala.tools.eclipse.scalatest.launching.ScalaTestMainTab.handleSearchButtonSelected(ScalaTestMainTab.scala:307)
      2. scala.tools.eclipse.scalatest.launching.ScalaTestMainTab$$anon$5.widgetSelected(ScalaTestMainTab.scala:177)
      2 frames
    13. RWT
      TypedListener.handleEvent
      1. org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:248)
      1 frame