The docs for ptr::drop_in_place state:

Unaligned values cannot be dropped in place, they must be copied to an aligned location first:

And include an example which uses ptr::copy to copy the value from an unaligned pointer into an aligned one. However, the docs for ptr::copy state:

Both src and dst must be properly aligned.

Either the docs for ptr::copy are wrong, and src does not need to be aligned, or the example for drop_in_place invokes UB and should be updated to use read_unaligned