I wrote a simple web crawler in Racket. It ran fine via "racket 
crawler.rkt" from the command line, but I had a number of crashes in 
DrScheme 6.2.1. I haven't been able to narrow it down to a nice, small, 
reproducible test case, but I thought I'd provide some of the info I have 
in case it may be of use. Here is a gist that has two crash logs and the 
source code:

https://gist.github.com/lojic/685a71594bb3f0cf1faa

I've modified the code since the crashes, and I'm not sure if it's still 
crashing in the version in the gist - I ran the latest briefly w/o a crash. 
The crash may have happened when I was getting an http connection and using 
http-conn-sendrecv! instead of getting a fresh connection each time, but 
that's a guess.

If the crash reports aren't sufficient in themselves, I can try and produce 
a more suitable test case.

As an aside, the web crawler was used to gather programming language 
popularity stats for this blog post:
http://blog.lojic.com/2015/10/06/programming-language-popularity-part-nine/

I'm hoping to help increase Racket's rank in that list as I gain some 
competency :)

Thanks,
Brian


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