Call For Help

The server works for basic Rack apps and Sinatra apps - everything in the examples/ folder. However, Rails really throws me for a loop. I've tested with 2.3.10 and 3.0.3, and both give variations on the same error, something about a bad file descriptor. I've read the source code for most all the Rack handlers as well as some of the Rails middleware, but I don't see anything to tell me what's wrong. I think it might be logging related, but I really have no idea.

I'm working on the develop branch (using https://github.com/nvie/gitflow). Please help, especially if you understand all the crazy stuff Rails does with Rack.

HELP!