1) initializationError(HelloWorldSpec)
                     java.lang.ClassCastException: HelloWorldSpec cannot be cast to org.scalatest.Suite
                     	at org.scalatest.junit.JUnitRunner.<init>(JUnitRunner.scala:64)
                     	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
                     	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
                     	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
                     	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
                     	at org.junit.internal.builders.AnnotatedBuilder.buildRunner(AnnotatedBuilder.java:104)
                     	at org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:86)
                     	at __shaded_by_pants__.org.pantsbuild.tools.junit.impl.CustomAnnotationBuilder$ScalaTestAnnotatedBuilder.runnerForClass(CustomAnnotationBuilder.java:49)
                     	at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
                     	at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:26)
                     	at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
                     	at __shaded_by_pants__.org.pantsbuild.tools.junit.impl.AnnotatedClassRequest.getRunner(AnnotatedClassRequest.java:41)
                     	at __shaded_by_pants__.org.pantsbuild.tools.junit.impl.CompositeRequestRunner.runChild(CompositeRequestRunner.java:53)
                     	at __shaded_by_pants__.org.pantsbuild.tools.junit.impl.ConcurrentCompositeRequestRunner$1$1.run(ConcurrentCompositeRequestRunner.java:37)
                     	at __shaded_by_pants__.org.pantsbuild.tools.junit.impl.ConcurrentRunnerScheduler.finished(ConcurrentRunnerScheduler.java:91)
                     	at __shaded_by_pants__.org.pantsbuild.tools.junit.impl.ConcurrentCompositeRequestRunner$1.evaluate(ConcurrentCompositeRequestRunner.java:46)
                     	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
                     	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
                     	at __shaded_by_pants__.org.pantsbuild.tools.junit.impl.ConsoleRunnerImpl.runLegacy(ConsoleRunnerImpl.java:542)
                     	at __shaded_by_pants__.org.pantsbuild.tools.junit.impl.ConsoleRunnerImpl.run(ConsoleRunnerImpl.java:458)
                     	at __shaded_by_pants__.org.pantsbuild.tools.junit.impl.ConsoleRunnerImpl.main(ConsoleRunnerImpl.java:846)
                     	at org.pantsbuild.tools.junit.ConsoleRunner.main(ConsoleRunner.java:12)