tools: add log output to crashes

PR-URL: #20295
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Matheus Marchini <matheus@sthima.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>

tools/test.py

@@ -298,10 +298,8 @@ def HasRun(self, output):
 
       if output.HasCrashed():
         self.severity = 'crashed'
-        exit_code = output.output.exit_code
-        self.traceback = "oh no!\nexit code: " + PrintCrashed(exit_code)
 
-      if output.HasTimedOut():
+      elif output.HasTimedOut():
         self.severity = 'fail'
 
     else: