anchor.diff:    cwd = _sanitizeWindowsPath(cwd);
     cwd = _enforceTrailingSlash(cwd);
     _workingDirectoryUri = new Uri(scheme: 'file', path: cwd);
  -  _logResolution('# Working Directory: $cwd');
  +  if (_logBuiltin) {
  +    _print('# Working Directory: $cwd');
  +  }
   }
   
   
  
positive.code: // package uri is resolved.
  Uri _createUri(String userUri) {
    var uri = Uri.parse(userUri);
    _logResolution('# Creating uri for: $uri');
  
    switch (uri.scheme) {
      case '':
  
negative.code: 
  _getPrintClosure() => _print;
  
  const _logBuiltin = false;
  
  // Corelib 'Uri.base' implementation.
  Uri _uriBase() {
  