gistfile1.txt

import akka.amqp._
import AMQP._

... 

val connection = AMQP.newConnection(ConnectionParameters(host = Config.amqpHost, 
                                                         port = Config.amqpPort,
                                                  virtualHost = Config.amqpVhost,
                                                     username = Config.amqpUser,
                                                     password = Config.amqpPasword,
                                        connectionCallback = Some(connectionCallback)))

// Compilation error: parameter specified twice: username