Debugging and ultimately setting up nGinx with hhvm-fastcgi

Turns out I'm having some issues setting up nginx with hhvm-fastcgi. Browser attempts to connect, and finally just hangs. I think I'm falling short at my nginx configuration, so
I went back and rebuild with ./configure --with-debug

`/usr/local/nginx/sbin/nginx -V`
nginx version: nginx/0.8.33
built by gcc 4.7.3 (Ubuntu/Linaro 4.7.3-1ubuntu1)
TLS SNI support enabled
configure arguments: --with-http_ssl_module --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx_error.log --http-log-path=/var/log/nginx_access.log --with-cc-opt=-Wno-error

Upon trying to access the site debug log just leaves
2014/01/03 19:20:35 [debug] 8536#0: epoll add event: fd:11 op:1 ev:00000001

I tried pointing another domain at the server, just to see what would happen, and thankfully I got a 403 over 80.
Why isn't there more of a trace? My configuration is attached