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Thanks for the reply.

>log all available information about the request and program state to some sort of log file

I've only dabbled with some Schemes, but given Lisp's homoiconic nature, I'm guessing it would also be possible to generate and persist a unit test based on the failing call too, right?

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I think that'll be possible.

As long as you can persist all the state (which is easy if you are programming in a functional manner), then you will know exactly what sort of input caused a crash in your program. And when you have the data, you can write it in a manner that is later readable by the Lisp reaer.

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