Traceback (most recent call last):
  File "library/python/runtime_py3/test/traceback/crash.py", line 44, in main
    one()
  File "library/python/runtime_py3/test/traceback/crash.py", line 12, in one
    modfunc(two)  # aaa
  File "library/python/runtime_py3/test/traceback/mod/__init__.py", line 3, in modfunc
    f()  # call back to caller
  File "library/python/runtime_py3/test/traceback/crash.py", line 16, in two
    three(42)
  File "library/python/runtime_py3/test/traceback/crash.py", line 20, in three
    raise RuntimeError('Kaboom! I\'m dead: {}'.format(x))
RuntimeError: Kaboom! I'm dead: 42
