error: useless use of `vec!` --> $DIR/vec.rs:24:14 | 24 | on_slice(&vec![]); | ^^^^^^^ help: you can use a slice directly: `&[]` | = note: `-D useless-vec` implied by `-D warnings` error: useless use of `vec!` --> $DIR/vec.rs:27:14 | 27 | on_slice(&vec![1, 2]); | ^^^^^^^^^^^ help: you can use a slice directly: `&[1, 2]` error: useless use of `vec!` --> $DIR/vec.rs:30:14 | 30 | on_slice(&vec ![1, 2]); | ^^^^^^^^^^^^ help: you can use a slice directly: `&[1, 2]` error: useless use of `vec!` --> $DIR/vec.rs:33:14 | 33 | on_slice(&vec!(1, 2)); | ^^^^^^^^^^^ help: you can use a slice directly: `&[1, 2]` error: useless use of `vec!` --> $DIR/vec.rs:36:14 | 36 | on_slice(&vec![1; 2]); | ^^^^^^^^^^^ help: you can use a slice directly: `&[1; 2]` error: useless use of `vec!` --> $DIR/vec.rs:49:14 | 49 | for a in vec![1, 2, 3] { | ^^^^^^^^^^^^^ help: you can use a slice directly: `&[1, 2, 3]`