not using Fatal for common error

outMsg.go

@@ -178,7 +178,7 @@ func buildNewsMsg(ToUserName, title, description string, articles []Article) (ms
 	for _, a := range articles {
 		if count >= 8 {
 			err := errors.New("too many articles, only take first 8")
-			log.Fatal(err)
+			log.Println(err)
 			break
 		}
 		s := buildArticleItem(a)