{"shas":[["2b4f1a69085fe9b9c41b1342bcbffd6bcafc88eb","abef95f4bd2046ec90dec958a5f64f153e03ec05@racket-lang.org","extend `sync/timeout' to allow a tail-position fail thunk for polling","Matthew Flatt"]],"ref":"refs/heads/master","push_id":21324957,"head":"2b4f1a69085fe9b9c41b1342bcbffd6bcafc88eb","size":1}