 
         start_replication url
 
-    console.log 'Started'
+    logger 'Started'

  field_save = (field,event,next) ->
    db.get event._id, (err,doc) ->
      if err
        console.error err
        return next false

      doc[field] = event[field]

    if opts.async
      if typeof opts.success isnt 'function'
        return
      opts.error ?= logger
      opts.success zone_files[url]
      # opts.error(err) not used
    else
