anchor.diff:        errSink: errBuffer,
       );
       final int clangTidyResult = await clangTidy.run();
  +    sw.stop();
  +    io.stdout.writeln('clang-tidy checks finished in ${sw.elapsed}');
       if (clangTidyResult != 0) {
         io.stderr.write(errBuffer);
         return false;
  
positive.code:   }
  
    Future<bool> _runClangTidy(String flutterRoot, bool verbose) async {
      // First ensure that out/host_debug/compile_commands.json exists by running
      // //flutter/tools/gn.
      final io.File compileCommands = io.File(path.join(
  
negative.code:     return true;
    }
  
    Future<bool> _runFormatter(String flutterRoot, bool verbose) async {
      io.stdout.writeln('Starting formatting checks.');
      final Stopwatch sw = Stopwatch()..start();
      final String ext = io.Platform.isWindows ? '.bat' : '.sh';
      final bool result = await _runCheck(
        flutterRoot,
        path.join(flutterRoot, 'ci', 'format$ext'),
        <String>[],
        'Formatting check',
        verbose: verbose,
      );
      sw.stop();
      io.stdout.writeln('formatting checks finished in ${sw.elapsed}');
      return result;
    }
  
    Future<bool> _runCheck(
  