anchor.diff:  
   
     void addError(var e, StackTrace stacktrace) {
  -    print("caught error " + e.toString() + "\n" + stacktrace.toString());
  +    //print("caught error " + e.toString() + "\n" + stacktrace.toString());
       _errors.add([ e, stacktrace, true ]);
     }
   
  
positive.code:       tm = e.target;
      }
      _baseLogger.output(tm, new LogMessage(level: ERROR, message: e.toString()));
      // TODO this should be a debug mode
      print(stacktrace.toString());
    }
  
  
  
negative.code:             "Nothing to do.  Use '--help' to see all the options."));
        }
        future.then((p) {
          statusStream.add(0);
          statusStream.close();
        });
      }, onError: (e, s) {
        addError(e, s);
        _checkErrors();
        statusStream.add(1);
        statusStream.close();
      });
  
      return statusStream.stream.first;
    }
  