java.lang.OutOfMemoryError: Java heap space
   at scala.collection.mutable.HashTable$class.$init$(HashTable.java:44)
   at scala.collection.mutable.HashMap.<init>(HashMap.java:39)
   at scala.collection.mutable.HashMap.<init>(HashMap.java:55)
   at org.netbeans.modules.scala.sbt.project.DirWatcher.scanFiles(DirWatcher.java:28)
   at org.netbeans.modules.scala.sbt.project.DirWatcher.check(DirWatcher.java:53)
   at org.netbeans.modules.scala.sbt.project.DirWatcher.run(DirWatcher.java:49)
   at java.util.TimerThread.mainLoop(TimerThread.java:555)
   at java.util.TimerThread.run(TimerThread.java:505)