error: You appear to be counting bytes the naive way --> $DIR/bytecount.rs:5:13 | LL | let _ = x.iter().filter(|&&a| a == 0).count(); // naive byte count | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Consider using the bytecount crate: `bytecount::count(x, 0)` | note: the lint level is defined here --> $DIR/bytecount.rs:1:8 | LL | #[deny(clippy::naive_bytecount)] | ^^^^^^^^^^^^^^^^^^^^^^^ error: You appear to be counting bytes the naive way --> $DIR/bytecount.rs:7:13 | LL | let _ = (&x[..]).iter().filter(|&a| *a == 0).count(); // naive byte count | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Consider using the bytecount crate: `bytecount::count((&x[..]), 0)` error: You appear to be counting bytes the naive way --> $DIR/bytecount.rs:19:13 | LL | let _ = x.iter().filter(|a| b + 1 == **a).count(); // naive byte count | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Consider using the bytecount crate: `bytecount::count(x, b + 1)` error: aborting due to 3 previous errors