error: You are using an explicit closure for cloning elements
  --> $DIR/map_clone.rs:8:22
   |
LL |     let _: Vec<i8> = 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:9:26
   |
LL |     let _: Vec<String> = 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:10:23
   |
LL |     let _: Vec<u32> = 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:22:29
   |
LL |     let _ = std::env::args().map(|v| v.clone());
   |                             ^^^^^^^^^^^^^^^^^^^ help: Remove the map call

error: aborting due to 4 previous errors