error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: N byte) --> $DIR/test.rs:15:11 | LL | fn bad(x: &u16, y: &Foo) {} | ^^^^ help: consider passing by value instead: `u16` | note: the lint level is defined here --> $DIR/test.rs:4:9 | LL | #![deny(clippy::trivially_copy_pass_by_ref)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: this argument (N byte) is passed by reference, but would be more efficient if passed by value (limit: N byte) --> $DIR/test.rs:15:20 | LL | fn bad(x: &u16, y: &Foo) {} | ^^^^ help: consider passing by value instead: `Foo` error: aborting due to 2 previous errors