readLineSync not working in a grinder task

[Empty2k12]

The following code is a minimal example of the problem:

import 'dart:io';

import 'package:grinder/grinder.dart';

main(args) => grind(args);

@DefaultTask()
readsFromIO() {
  final input = stdin.readLineSync();
  log(input);
  log('stdin.readLineSync() never finishes and therefore nothing prints');
}

I suspect it's due to the way readLineSync is handling the termination symbols and grinder wrapping the IO.