mirror of
https://github.com/rust-lang/rust-clippy
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112 lines
3.8 KiB
Text
112 lines
3.8 KiB
Text
error: using `clone` on a `Copy` type
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--> $DIR/unnecessary_clone.rs:17:5
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LL | 42.clone();
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| ^^^^^^^^^^ help: try removing the `clone` call: `42`
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= note: `-D clippy::clone-on-copy` implied by `-D warnings`
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error: using `clone` on a `Copy` type
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--> $DIR/unnecessary_clone.rs:21:5
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LL | (&42).clone();
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| ^^^^^^^^^^^^^ help: try dereferencing it: `*(&42)`
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error: using `clone` on a `Copy` type
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--> $DIR/unnecessary_clone.rs:24:5
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LL | rc.borrow().clone();
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| ^^^^^^^^^^^^^^^^^^^ help: try dereferencing it: `*rc.borrow()`
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error: using '.clone()' on a ref-counted pointer
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--> $DIR/unnecessary_clone.rs:34:5
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LL | rc.clone();
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| ^^^^^^^^^^ help: try this: `Rc::<bool>::clone(&rc)`
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= note: `-D clippy::clone-on-ref-ptr` implied by `-D warnings`
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error: using '.clone()' on a ref-counted pointer
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--> $DIR/unnecessary_clone.rs:37:5
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LL | arc.clone();
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| ^^^^^^^^^^^ help: try this: `Arc::<bool>::clone(&arc)`
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error: using '.clone()' on a ref-counted pointer
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--> $DIR/unnecessary_clone.rs:40:5
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LL | rcweak.clone();
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| ^^^^^^^^^^^^^^ help: try this: `Weak::<bool>::clone(&rcweak)`
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error: using '.clone()' on a ref-counted pointer
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--> $DIR/unnecessary_clone.rs:43:5
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LL | arc_weak.clone();
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| ^^^^^^^^^^^^^^^^ help: try this: `Weak::<bool>::clone(&arc_weak)`
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error: using '.clone()' on a ref-counted pointer
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--> $DIR/unnecessary_clone.rs:47:33
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LL | let _: Arc<dyn SomeTrait> = x.clone();
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| ^^^^^^^^^ help: try this: `Arc::<SomeImpl>::clone(&x)`
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error: using `clone` on a `Copy` type
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--> $DIR/unnecessary_clone.rs:51:5
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LL | t.clone();
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| ^^^^^^^^^ help: try removing the `clone` call: `t`
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error: using `clone` on a `Copy` type
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--> $DIR/unnecessary_clone.rs:53:5
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LL | Some(t).clone();
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| ^^^^^^^^^^^^^^^ help: try removing the `clone` call: `Some(t)`
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error: using `clone` on a double-reference; this will copy the reference instead of cloning the inner type
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--> $DIR/unnecessary_clone.rs:59:22
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LL | let z: &Vec<_> = y.clone();
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| ^^^^^^^^^
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= note: `#[deny(clippy::clone_double_ref)]` on by default
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help: try dereferencing it
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LL | let z: &Vec<_> = &(*y).clone();
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| ^^^^^^^^^^^^^
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help: or try being explicit about what type to clone
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LL | let z: &Vec<_> = &std::vec::Vec<i32>::clone(y);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `iter().cloned().collect()` on a slice to create a `Vec`. Calling `to_vec()` is both faster and more readable
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--> $DIR/unnecessary_clone.rs:66:27
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LL | let v2: Vec<isize> = v.iter().cloned().collect();
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `.to_vec()`
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= note: `-D clippy::iter-cloned-collect` implied by `-D warnings`
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error: called `iter().cloned().collect()` on a slice to create a `Vec`. Calling `to_vec()` is both faster and more readable
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--> $DIR/unnecessary_clone.rs:71:38
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LL | let _: Vec<isize> = vec![1, 2, 3].iter().cloned().collect();
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `.to_vec()`
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error: called `iter().cloned().collect()` on a slice to create a `Vec`. Calling `to_vec()` is both faster and more readable
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--> $DIR/unnecessary_clone.rs:76:24
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LL | .to_bytes()
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| ________________________^
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LL | | .iter()
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LL | | .cloned()
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LL | | .collect();
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| |______________________^ help: try: `.to_vec()`
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error: using `clone` on a `Copy` type
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--> $DIR/unnecessary_clone.rs:114:20
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LL | let _: E = a.clone();
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| ^^^^^^^^^ help: try dereferencing it: `*****a`
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error: aborting due to 15 previous errors
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