atesterlol: https://gist.github.com/Dirbaio/ef6758162579e95410039f00c1eda2d8
```
[dirbaio@mars copybench]$ dd if=/dev/urandom of=src.bin bs=1M count=100
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 0.228219 s, 459 MB/s
[dirbaio@mars copybench]$ cargo run --release
    Finished `release` profile [optimized] target(s) in 0.00s
     Running `target/release/copybench`
direct, io::copy: 80ms
direct, manual_copy: 374ms
wrapper, io::copy: 359ms
wrapper, manual_copy: 337ms
```