anchor.diff:    void showReproduce() {
       print("\n-- BEGIN REPRODUCE  --\n");
       print("DART SDK REVISION: $dartSdkRevision\n");
  -    print("dartfuzz.dart --${fp ? "" : "no-"}fp --${ffi ? "" : "no-"}ffi "
  +    print(
  +        "dart runtime/tools/dartfuzz/dartfuzz.dart --${fp ? "" : "no-"}fp --${ffi ? "" : "no-"}ffi "
           "--${flatTp ? "" : "no-"}flat "
           "--seed ${seed} $fileName");
       print("\n-- RUN 1 --\n");
  
positive.code: 
  /// Concrete test runner of Dart JIT.
  class TestRunnerJIT implements TestRunner {
    TestRunnerJIT(String prefix, String tag, String top, String tmp, this.env,
        this.fileName, List<String> extraFlags) {
      description = '$prefix-$tag';
      dart = '$top/out/$tag/dart';
  
negative.code:       "DART_CONFIGURATION='${env['DART_CONFIGURATION']}'",
        "DART_VM_FLAGS='${env['DART_VM_FLAGS']}'",
        ...cmd
      ].join(" ").replaceAll('$top/', '').replaceAll('$tmp/', ''));
      print([dart, snapshot]
          .join(" ")
          .replaceAll('$top/', '')
          .replaceAll('$tmp/', ''));
    }
  
    String description;
  