[racket] common handin error related to 'print-only-errors'?

From: Robby Findler (robby at racket-lang.org)
Date: Thu Feb 27 21:23:22 EST 2014

Probably this is because print-only-errors has a contract on it and the
contract is trying to figure out a name for the negative party, which
involves checking the existence of directories.

I think you would have to change the handin server to use a slightly more
permissive sandbox. I'm not sure how easy that is, tho.


On Thu, Feb 27, 2014 at 4:28 PM, John Clements <clements at brinckerhoff.org>wrote:

> I find that submitting code to my handin-server that contains the
> directive:
> (print-only-errors #t)
> …results in the response error
> current-directory: `exists’ access denied for /home/clements/class/handin/
> (error message retyped, apologies for typos).
> It’s not clear to me why ‘print-only-errors’ should be calling
> ‘current-directory’—is there an easy workaround for this, other than
> telling students to comment this line out before handing it in?
> John
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