error: boolean expression will never evaluate to 'true'
--> src/formats/pnm.rs:59:8
|
59 | if header[1] < b'1' && header[1] > b'6' {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: since `b'1'` < `b'6'`, the expression evaluates to false for any value of `header[1]`
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#impossible_comparisons
= note: `#[deny(clippy::impossible_comparisons)]` on by default