# File lib/webrat/selenium/application_servers/rack.rb, line 22
        def fail
          $stderr.puts
          $stderr.puts
          $stderr.puts "==> Failed to boot the application server... exiting!"
          $stderr.puts
          $stderr.puts "Verify you can start a server on port #{Webrat.configuration.application_port} with the following command:"
          $stderr.puts
          $stderr.puts "    #{start_command}"
          exit
        end