title: Proguard retrace tool's output
body: <p>I'm experimenting with proguard now that it's easier to use from
  within eclipse. I've exported a signed version of my app with a
  deliberate bug that causes a crash for testing. After I get the stack
  trace and run retrace -verbose mapping.txt stack.txt, instead of
  giving me where the error occurs, it gives me the class where error
  happens and list a of methods, one of which is the method where the
  exception happens.</p>
  
  <p>I've used the official guide for all of this and edited the logcat stack trace capture to be in the same format as the dev console. Anyone know what the problem could be?</p>