lib/ougai/formatters/readable.rb in ougai-1.8.1 vs lib/ougai/formatters/readable.rb in ougai-1.8.2

@@ -26,10 +26,11 @@
         @excluded_fields = opts[:excluded_fields] || []
         @serialize_backtrace = true
         load_dependent
       end
 
-      def _call(severity, time, progname, data)
+      def _call(severity, time, progname, _data)
+        data = _data.dup
         msg = data.delete(:msg)
         level = @plain ? severity : colored_level(severity)
         dt = format_datetime(time)
         err_str = create_err_str(data)