svoid findDeadlockReasonsInStackTracesFile(File f) {
  LS traces = splitAtEmptyLines(loadTextFile(f));
  S sub = "java.awt.EventQueue";
  LS traces2 = containing(traces, sub);
  print(n2(traces2, "thread") + " with AWT activity.\n");
  
  // put stack trace with most activity within AWT thread first
  // (most likely culprit)
  sortInPlaceByCalculatedFieldDesc(traces2, t -> indexOfLineContaining(t, sub));
    
  print(joinWithEmptyLines(traces2));
}

svoid findDeadlockReasonsInStackTracesFile() {
  File f = latestFileIn(stefansOS_watchDogStackTracesDir());
  if (f == null) ret with print("No watch dog straces found.");
  print(f);
  findDeadlockReasonsInStackTracesFile(f);
}