fixed the sbt.TrapExitSecurityException bug

build.sbt

@@ -8,6 +8,10 @@ lazy val root = (project in file("."))
       libraryDependencies += scalaTest % Test
   )
 
+// System.exit calls are trapped to prevent the JVM from terminating.
+// This is useful for executing user code that may call System.exit.
+trapExit := false
+
 // Tests Configurations
 val numberOfTestProcessors = java.lang.Runtime.getRuntime.availableProcessors + 1
 // Run tests in parallel