    # File lib/phusion_passenger/classic_rails/framework_spawner.rb, line 92
            def start
                    super
                    begin
                            channel = MessageChannel.new(@owner_socket)
                            result = channel.read
                            if result.nil?
                                    raise Error, "The framework spawner server exited unexpectedly."
                            else
                                    status = result[0]
                            end
                            if status == 'exception'
                                    child_exception = unmarshal_exception(channel.read_scalar)
                                    stop
                                    message = "Could not load Ruby on Rails framework version #{@framework_version}: " <<
                                            "#{child_exception.class} (#{child_exception.message})"
                                    options = { :version => @framework_version }
                                    if @print_framework_loading_exceptions
                                            print_exception(self.class.to_s, child_exception)
                                    end
                                    raise FrameworkInitError.new(message, child_exception, options)
                            end
                    rescue IOError, SystemCallError, SocketError => e
                            stop if started?
                            raise Error, "The framework spawner server exited unexpectedly: #{e}"
                    rescue
                            stop if started?
                            raise
                    end
            end