We have fancy new formatting:

```rust
format!("{n} bottles of beer on the wall, {n} bottles of beer.\nTake one down and pass it around, {n_sub_one} bottles of beer on the wall.\n", 
        n=n, n_sub_one=n-1)
```

Notably, this avoids the 4 `~str` literals, and the 3 `~str`s from the `.to_str()` call.