68     debug_assert!(usize::MAX as u64 == u64::MAX, "Only 64-bit arch is supported");  in debug_assert_usize_is_u64()
97         chunk_index: u64,  in read_backing_chunk_unverified()  argument
105         chunk_index: u64,  in read_backing_chunk_verified()  argument
140             self.read_backing_chunk_unverified(output_chunk_index as u64, &mut orig_data)?;  in new_hash_for_incomplete_write()
164         if current_size as u64 == CHUNK_SIZE {  in new_chunk_hash()
180     pub fn size(&self) -> u64 {  in size()  argument
186     fn write_at(&self, buf: &[u8], offset: u64) -> io::Result<usize> {  in write_at()
241             let size_at_least = offset.saturating_add(buf.len() as u64);  in write_at()
247     fn resize(&self, size: u64) -> io::Result<()> {  in resize()
285     fn read_chunk(&self, chunk_index: u64, buf: &mut ChunkBuffer) -> io::Result<usize> {  in read_chunk()  argument
314         fn write_at(&self, buf: &[u8], offset: u64) -> io::Result<usize> {  in write_at()
325         fn resize(&self, size: u64) -> io::Result<()> {  in resize()
334         fn read_chunk(&self, chunk_index: u64, buf: &mut ChunkBuffer) -> io::Result<usize> {  in read_chunk()  argument