Nitpick: In section 3.3, for the Vec impl, instead of finalizing a child and then forgetting it, the child should be moved into a ManuallyDrop first. That way i

Nitpick: In section 3.3, for the Vec impl, instead of finalizing a child and then forgetting it, the child should be moved into a ManuallyDrop first. That way if the finalization panics it doesn't try to drop the child again while unwinding.