error: You are using an explicit closure for cloning elements --> $DIR/map_clone.rs:9:22 | LL | let _: Vec = vec![5_i8; 6].iter().map(|x| *x).collect(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `vec![5_i8; 6].iter().cloned()` | = note: `-D clippy::map-clone` implied by `-D warnings` error: You are using an explicit closure for cloning elements --> $DIR/map_clone.rs:10:26 | LL | let _: Vec = vec![String::new()].iter().map(|x| x.clone()).collect(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `vec![String::new()].iter().cloned()` error: You are using an explicit closure for cloning elements --> $DIR/map_clone.rs:11:23 | LL | let _: Vec = vec![42, 43].iter().map(|&x| x).collect(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `vec![42, 43].iter().cloned()` error: You are needlessly cloning iterator elements --> $DIR/map_clone.rs:23:29 | LL | let _ = std::env::args().map(|v| v.clone()); | ^^^^^^^^^^^^^^^^^^^ help: Remove the map call error: aborting due to 4 previous errors