anchor.diff:      }
   
       var input = new CompileRequest()..source = context.dartSource;
  -    _setBackup();
  +    _setLastRunCondition();
       _cachedCompile = null;
       dartServices
           .compile(input)
  
positive.code:     }
    }
    
    void _setBackup () {
      _lastRun = new Map<_FileType, String>();
      _lastRun[_FileType.DART] = context.dartSource;
      _lastRun[_FileType.HTML] = context.htmlSource;
  
negative.code:  
    void _storePreviousResult() {
      var input = new CompileRequest()..source = context.dartSource;
      _setLastRunCondition();
      dartServices
          .compile(input)
          .timeout(longServiceCallTimeout)
  