error: using `clone` on a `Copy` type --> $DIR/unnecessary_clone.rs:26:5 | 26 | 42.clone(); | ^^^^^^^^^^ help: try removing the `clone` call: `42` | = note: `-D clippy::clone-on-copy` implied by `-D warnings` error: using `clone` on a `Copy` type --> $DIR/unnecessary_clone.rs:30:5 | 30 | (&42).clone(); | ^^^^^^^^^^^^^ help: try dereferencing it: `*(&42)` error: using `clone` on a `Copy` type --> $DIR/unnecessary_clone.rs:33:5 | 33 | rc.borrow().clone(); | ^^^^^^^^^^^^^^^^^^^ help: try dereferencing it: `*rc.borrow()` error: using '.clone()' on a ref-counted pointer --> $DIR/unnecessary_clone.rs:43:5 | 43 | rc.clone(); | ^^^^^^^^^^ help: try this: `Rc::::clone(&rc)` | = note: `-D clippy::clone-on-ref-ptr` implied by `-D warnings` error: using '.clone()' on a ref-counted pointer --> $DIR/unnecessary_clone.rs:46:5 | 46 | arc.clone(); | ^^^^^^^^^^^ help: try this: `Arc::::clone(&arc)` error: using '.clone()' on a ref-counted pointer --> $DIR/unnecessary_clone.rs:49:5 | 49 | rcweak.clone(); | ^^^^^^^^^^^^^^ help: try this: `Weak::::clone(&rcweak)` error: using '.clone()' on a ref-counted pointer --> $DIR/unnecessary_clone.rs:52:5 | 52 | arc_weak.clone(); | ^^^^^^^^^^^^^^^^ help: try this: `Weak::::clone(&arc_weak)` error: using '.clone()' on a ref-counted pointer --> $DIR/unnecessary_clone.rs:56:29 | 56 | let _: Arc = x.clone(); | ^^^^^^^^^ help: try this: `Arc::::clone(&x)` error: using `clone` on a `Copy` type --> $DIR/unnecessary_clone.rs:60:5 | 60 | t.clone(); | ^^^^^^^^^ help: try removing the `clone` call: `t` error: using `clone` on a `Copy` type --> $DIR/unnecessary_clone.rs:62:5 | 62 | Some(t).clone(); | ^^^^^^^^^^^^^^^ help: try removing the `clone` call: `Some(t)` error: using `clone` on a double-reference; this will copy the reference instead of cloning the inner type --> $DIR/unnecessary_clone.rs:68:22 | 68 | let z: &Vec<_> = y.clone(); | ^^^^^^^^^ | = note: #[deny(clippy::clone_double_ref)] on by default help: try dereferencing it | 68 | let z: &Vec<_> = &(*y).clone(); | ^^^^^^^^^^^^^ help: or try being explicit about what type to clone | 68 | let z: &Vec<_> = &std::vec::Vec::clone(y); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: called `cloned().collect()` on a slice to create a `Vec`. Calling `to_vec()` is both faster and more readable --> $DIR/unnecessary_clone.rs:75:26 | 75 | let v2: Vec = v.iter().cloned().collect(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: `-D clippy::iter-cloned-collect` implied by `-D warnings` error: using `clone` on a `Copy` type --> $DIR/unnecessary_clone.rs:111:20 | 111 | let _: E = a.clone(); | ^^^^^^^^^ help: try dereferencing it: `*****a` error: aborting due to 13 previous errors