Rack::Lint not allowing non String variables

[joost]

See https://github.com/rack/rack/blob/master/lib/rack/lint.rb#L274:

next  if key.include? "."   # Skip extensions
assert("env variable #{key} has non-string value #{value.inspect}") {

I got this assertion since env['warden'] is the Proxy. Should it be renamed to env['warden.proxy']?

[hassox]

I'd be down for that. Could you provide a PR?

[joost]

Hmm... long time ago.. I cannot really remember when/why I got this error.
When I come by it I will definitely create a PR :)