anchor.diff:        }
   
         callback();
  +    }).catchError((error) {
  +      Logger.root.severe("one time fetch all packages error: $error");
       });
     }
   
  
positive.code:       }
  
        callback();
      });
    }
  
  
negative.code: 
  void main(args) {
    Logger.root.onRecord.listen((LogRecord record) {
      print("daemon_isolate: ${record.message}");
    });
  
    ArgParser parser = _createArgsParser();
  