fix: Use unaligned read as copy_nonoverlapping requires alignment

[mmastrac]

copy_nonoverlapping is not valid to use here as:

Behavior is undefined if any of the following conditions are violated:

src must be [valid](https://doc.rust-lang.org/stable/std/ptr/index.html#safety) for reads of count * size_of::<T>() bytes.
dst must be [valid](https://doc.rust-lang.org/stable/std/ptr/index.html#safety) for writes of count * size_of::<T>() bytes.
Both src and dst must be properly aligned.

The region of memory beginning at src with a size of count * size_of::<T>() bytes must not overlap with the region of memory beginning at dst with the same size.