Merge pull request #123 from 9seconds/panic-on-err

Crash if we can't allocate incoming connection

proxy/proxy.go

 			case <-doneChan:
 				return
 			default:
-				p.Logger.Errorw("Cannot allocate incoming connection", "error", err)
-				continue
+				p.Logger.Fatalw("Cannot allocate incoming connection", "error", err)
 			}
 		}