Useless whitespace between two Tuple struct without named fields

[erwanvivien]

Minimal reproduce:

struct A(u8);
struct B(A);

fn main() {
    let foo = B(A(0));

    dbg!(foo.0 .0);
}

Doesn't format to

dbg!(foo.0.0);

[ytmimi]

Thanks for reaching out. This is a duplicate of #5532

This is fixed when setting version=Two. See #4355 (comment) for more details.