828     fn size_of_val_raw(ptr: NonNull<Self>) -> Option<usize> {  in size_of_val_raw()
870     fn size_for_metadata(meta: Self::PointerMetadata) -> Option<usize> {  in size_for_metadata()
954     fn to_elem_count(self) -> usize;  in to_elem_count()
969     fn size_for_metadata(self, layout: DstLayout) -> Option<usize>;  in size_for_metadata()
975     fn from_elem_count(_elems: usize) -> () {}  in from_elem_count()
978     fn to_elem_count(self) -> usize {  in to_elem_count()
983     fn size_for_metadata(self, layout: DstLayout) -> Option<usize> {  in size_for_metadata()
993 impl PointerMetadata for usize {  implementation
995     fn from_elem_count(elems: usize) -> usize {  in from_elem_count()
1000     fn to_elem_count(self) -> usize {  in to_elem_count()
1005     fn size_for_metadata(self, layout: DstLayout) -> Option<usize> {  in size_for_metadata()
1075     fn pointer_to_metadata(ptr: *mut [T]) -> usize {  in pointer_to_metadata()
2521         count: usize,  in try_ref_from_bytes_with_elems()
2642         count: usize,  in try_ref_from_prefix_with_elems()
2750         count: usize,  in try_ref_from_suffix_with_elems()
2846         count: usize,  in try_mut_from_bytes_with_elems()
2957         count: usize,  in try_mut_from_prefix_with_elems()
3057         count: usize,  in try_mut_from_suffix_with_elems()
3799         position: usize,  in insert_vec_zeroed()
3800         additional: usize,  in insert_vec_zeroed()
4711         count: usize,  in ref_from_bytes_with_elems()
4810         count: usize,  in ref_from_prefix_with_elems()
4904         count: usize,  in ref_from_suffix_with_elems()
4985         count: usize,  in mut_from_bytes_with_elems()
5075         count: usize,  in mut_from_prefix_with_elems()
5160         count: usize,  in mut_from_suffix_with_elems()
6438         additional: usize,  in extend_vec_zeroed()
6455         position: usize,  in insert_vec_zeroed()
6456         additional: usize,  in insert_vec_zeroed()
7055             fn read(&mut self, buf: &mut [u8]) -> std::io::Result<usize> {  in test_read_io_with_padding_soundness()