error: using `.clone()` on a ref-counted pointer
  --> $DIR/unnecessary_clone.rs:23:5
   |
LL |     rc.clone();
   |     ^^^^^^^^^^ help: try: `Rc::<bool>::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:28:5
   |
LL |     arc.clone();
   |     ^^^^^^^^^^^ help: try: `Arc::<bool>::clone(&arc)`

error: using `.clone()` on a ref-counted pointer
  --> $DIR/unnecessary_clone.rs:32:5
   |
LL |     rcweak.clone();
   |     ^^^^^^^^^^^^^^ help: try: `Weak::<bool>::clone(&rcweak)`

error: using `.clone()` on a ref-counted pointer
  --> $DIR/unnecessary_clone.rs:36:5
   |
LL |     arc_weak.clone();
   |     ^^^^^^^^^^^^^^^^ help: try: `Weak::<bool>::clone(&arc_weak)`

error: using `.clone()` on a ref-counted pointer
  --> $DIR/unnecessary_clone.rs:41:33
   |
LL |     let _: Arc<dyn SomeTrait> = x.clone();
   |                                 ^^^^^^^^^ help: try: `Arc::<SomeImpl>::clone(&x)`

error: using `clone` on type `T` which implements the `Copy` trait
  --> $DIR/unnecessary_clone.rs:46:5
   |
LL |     t.clone();
   |     ^^^^^^^^^ help: try removing the `clone` call: `t`
   |
   = note: `-D clippy::clone-on-copy` implied by `-D warnings`

error: using `clone` on type `Option<T>` which implements the `Copy` trait
  --> $DIR/unnecessary_clone.rs:50:5
   |
LL |     Some(t).clone();
   |     ^^^^^^^^^^^^^^^ help: try removing the `clone` call: `Some(t)`

error: using `clone` on type `E` which implements the `Copy` trait
  --> $DIR/unnecessary_clone.rs:85:20
   |
LL |         let _: E = a.clone();
   |                    ^^^^^^^^^ help: try dereferencing it: `*****a`

error: using `.clone()` on a ref-counted pointer
  --> $DIR/unnecessary_clone.rs:105:14
   |
LL |         Some(try_opt!(Some(rc)).clone())
   |              ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Rc::<u8>::clone(&try_opt!(Some(rc)))`

error: aborting due to 9 previous errors