anchor.diff:            line = stdoutStream.readLine();
           }
         };
  +      p.errorHandler = (error) {
  +        print("Failed to list tests: $runnerPath --list");
  +        replyTo.send("");
  +      };
         p.exitHandler = (code) {
           if (code < 0) {
             print("Failed to list tests: $runnerPath --list");
  
positive.code:                           configuration,
                            completeHandler,
                            expectations));
  
        receiveTestName.receive(testNameHandler);
      }
    }
  
  
negative.code:         }
          replyTo.send("");
        };
        port.close();
      });
    }
  }
  