[inferiorhuman]

These are all valid Rust:

  0b1111_1111
  0b11111111u8
  0b1111_1111_u8
  0b11_11_11_11_u8

https://doc.rust-lang.org/book/ch03-02-data-types.html

[connicpu]

Their problem with rust is probably more all the single quotes you need for lifetimes