error: using `clone` on a `Copy` type
--> $DIR/unnecessary_clone.rs:16:5
|
16 | 42.clone();
| ^^^^^^^^^^ help: try removing the `clone` call: `42`
|
= note: `-D clone-on-copy` implied by `-D warnings`
error: using `clone` on a `Copy` type
--> $DIR/unnecessary_clone.rs:20:5
|
20 | (&42).clone();
| ^^^^^^^^^^^^^ help: try dereferencing it: `*(&42)`
error: using '.clone()' on a ref-counted pointer
--> $DIR/unnecessary_clone.rs:30:5
|
30 | rc.clone();
| ^^^^^^^^^^ help: try this: `Rc::<bool>::clone(&rc)`
|
= note: `-D clone-on-ref-ptr` implied by `-D warnings`
error: using '.clone()' on a ref-counted pointer
--> $DIR/unnecessary_clone.rs:33:5
|
33 | arc.clone();
| ^^^^^^^^^^^ help: try this: `Arc::<bool>::clone(&arc)`
error: using '.clone()' on a ref-counted pointer
--> $DIR/unnecessary_clone.rs:36:5
|
36 | rcweak.clone();
| ^^^^^^^^^^^^^^ help: try this: `Weak::<bool>::clone(&rcweak)`
error: using '.clone()' on a ref-counted pointer
--> $DIR/unnecessary_clone.rs:39:5
|
39 | arc_weak.clone();
| ^^^^^^^^^^^^^^^^ help: try this: `Weak::<bool>::clone(&arc_weak)`
error: using '.clone()' on a ref-counted pointer
--> $DIR/unnecessary_clone.rs:43:29
|
43 | let _: Arc<SomeTrait> = x.clone();
| ^^^^^^^^^ help: try this: `Arc::<SomeImpl>::clone(&x)`
error: using `clone` on a `Copy` type
--> $DIR/unnecessary_clone.rs:47:5
|
47 | t.clone();
| ^^^^^^^^^ help: try removing the `clone` call: `t`
error: using `clone` on a `Copy` type
--> $DIR/unnecessary_clone.rs:49:5
|
49 | 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:55:22
|
55 | let z: &Vec<_> = y.clone();
| ^^^^^^^^^
|
= note: #[deny(clone_double_ref)] on by default
help: try dereferencing it
|
55 | let z: &Vec<_> = &(*y).clone();
| ^^^^^^^^^^^^^
help: or try being explicit about what type to clone
|
55 | let z: &Vec<_> = &std::vec::Vec<i32>::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:62:27
|
62 | let v2 : Vec<isize> = v.iter().cloned().collect();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: `-D iter-cloned-collect` implied by `-D warnings`
error: aborting due to 11 previous errors