Traceback (most recent call last):
  File library/python/runtime_py3/test/traceback/crash.py:42 in main
    one()
  File library/python/runtime_py3/test/traceback/crash.py:11 in one
    modfunc(two)  # aaa
  File library/python/runtime_py3/test/traceback/mod/__init__.py:3 in modfunc
    f()  # call back to caller
  File library/python/runtime_py3/test/traceback/crash.py:15 in two
    three(42)
  File library/python/runtime_py3/test/traceback/crash.py:19 in three
    raise RuntimeError(f"Kaboom! I'm dead: {x}")
RuntimeError: Kaboom! I'm dead: 42

