When an NFA fails its testing, it outputs something like:
did not die
did not die
did not die
did not die
did not die
did not die
did not die
did not die
did not die
did not die
Test Failed:
v~~~~ See below for detailed error ~~~v !!! NFA INCORRECT !!!
This is not the most friendly or readable statement, and I have a suspicion that the "did not die"s are lingering debug statements that should be cleaned out.