anchor.diff:    final FinalizedReader _finalizedReader;
     FinalizedReader get finalizedReader => _finalizedReader;
   
  -  final AssetGraph _assetGraph;
  -  AssetGraph get assetGraph => _assetGraph;
  +  final AssetGraph assetGraph;
   
     final BuildScriptUpdates _buildScriptUpdates;
     BuildScriptUpdates get buildScriptUpdates => _buildScriptUpdates;
  
positive.code:             : CachingAssetReader(buildDefinition.reader),
          _resolvers = options.resolvers,
          _writer = buildDefinition.writer,
          _assetGraph = buildDefinition.assetGraph,
          _resourceManager = buildDefinition.resourceManager,
          _verbose = options.verbose,
          _environment = buildDefinition.environment,
  
negative.code:   HungActionsHeartbeat hungActionsHeartbeat;
  
    _SingleBuild(BuildImpl buildImpl, Set<BuildDirectory> buildDirs)
        : _assetGraph = buildImpl.assetGraph,
          _buildPhases = buildImpl._buildPhases,
          _buildPhasePool = List(buildImpl._buildPhases.length),
          _environment = buildImpl._environment,
  