Log just the message, not the stringified version of the whole log line.

hooks/papertrail/papertrail.go

diff --git a/hooks/papertrail/papertrail.go b/hooks/papertrail/papertrail.go
index ca445bb..3c12991 100644
--- a/hooks/papertrail/papertrail.go
+++ b/hooks/papertrail/papertrail.go
@@ -31,6 +31,7 @@
 func (hook *PapertrailHook) Fire(entry *logrus.Entry) error {
 	defer hook.UDPConn.Close()
 	date := time.Now().Format(format)
+	payload := fmt.Sprintf("<22> %s %s: [%s] %s", date, hook.AppName, entry.Data["level"], entry.Message)
 
 	line, err := entry.String()
 	if err != nil {