`needless_range_loop` could suggest using `clone_from_slice` in some cases

[mcarton]

See How do I fix Clippy's needless_range_loop for loops that copy between slices with an offset?.

[marcusklaas]

I'm currently looking into this. If nothing is reported before the end of this weekend, I've probably failed and moved on.

[rail-rain]

I'm certain the PR #2021 fixed this issue; this can be closed now.