error: using `clone` on a `Copy` type --> $DIR/unnecessary_clone.rs:17:5 | LL | 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:21:5 | LL | (&42).clone(); | ^^^^^^^^^^^^^ help: try dereferencing it: `*(&42)` error: using `clone` on a `Copy` type --> $DIR/unnecessary_clone.rs:24:5 | LL | rc.borrow().clone(); | ^^^^^^^^^^^^^^^^^^^ help: try dereferencing it: `*rc.borrow()` error: using `.clone()` on a ref-counted pointer --> $DIR/unnecessary_clone.rs:39:5 | LL | 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:42:5 | LL | arc.clone(); | ^^^^^^^^^^^ help: try this: `Arc::::clone(&arc)` error: using `.clone()` on a ref-counted pointer --> $DIR/unnecessary_clone.rs:45:5 | LL | rcweak.clone(); | ^^^^^^^^^^^^^^ help: try this: `Weak::::clone(&rcweak)` error: using `.clone()` on a ref-counted pointer --> $DIR/unnecessary_clone.rs:48:5 | LL | arc_weak.clone(); | ^^^^^^^^^^^^^^^^ help: try this: `Weak::::clone(&arc_weak)` error: using `.clone()` on a ref-counted pointer --> $DIR/unnecessary_clone.rs:52:33 | LL | let _: Arc = x.clone(); | ^^^^^^^^^ help: try this: `Arc::::clone(&x)` error: using `clone` on a `Copy` type --> $DIR/unnecessary_clone.rs:56:5 | LL | t.clone(); | ^^^^^^^^^ help: try removing the `clone` call: `t` error: using `clone` on a `Copy` type --> $DIR/unnecessary_clone.rs:58:5 | LL | 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:64:22 | LL | let z: &Vec<_> = y.clone(); | ^^^^^^^^^ | = note: `#[deny(clippy::clone_double_ref)]` on by default help: try dereferencing it | LL | let z: &Vec<_> = &(*y).clone(); | ^^^^^^^^^^^^^ help: or try being explicit about what type to clone | LL | let z: &Vec<_> = &std::vec::Vec::clone(y); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: using `clone` on a `Copy` type --> $DIR/unnecessary_clone.rs:100:20 | LL | let _: E = a.clone(); | ^^^^^^^^^ help: try dereferencing it: `*****a` error: aborting due to 12 previous errors