[racket] Getting unusual behavior from racket/sandbox: not truly capping memory usage?!

It might be that I've found an issue with web-server. But I hate being
Peter calling wolf.

Let me post code and see if anyone agrees:

     https://github.com/dyoo/web-server-under-sandbox

I create a trivial web server with a servlet that immediately errors
out.  I have it also serve static JavaScript that's essentially a
torture test: it keeps sending requests to the web server, over and
over.  (Ripped out of whalesong's REPL testing code).

The README there explains how to run and observe what looks like a
memory leak: eventually the web server crashes under the context of
the sandbox.


Can anyone else confirm that they see this out-of-memory behavior as well?