anchor.diff:    analyzer = new ana.Analyzer(sdkPath);
     await analyzer.warmup();
   
  +  print("Warming up strong analyzer");
  +  strongAnalyzer = new ana.Analyzer(sdkPath, strongMode: true);
  +  await strongAnalyzer.warmup();
  +
     print("Warming up compiler");
     compiler = new comp.Compiler(sdkPath);
     await compiler.warmup();
  
positive.code: bool _VERBOSE = true;
  bool _DUMP_SRC = false;
  bool _DUMP_PERF = false;
  bool _DUMP_DELTA = true;
  
  CommonServer server;
  ApiServer apiServer;
  
negative.code: }
  
  testPath(String path, analysis_server.AnalysisServerWrapper wrapper,
      ana.Analyzer analyzer, ana.Analyzer strongAnalyzer,
      comp.Compiler compiler) async {
    var f = new io.File(path);
    String src = f.readAsStringSync();
  
  