error: this argument is passed by value, but not consumed in the function body --> $DIR/needless_pass_by_value.rs:15:23 | LL | fn foo(v: Vec, w: Vec, mut x: Vec, y: Vec) -> Vec { | ^^^^^^ help: consider changing the type to: `&[T]` | = note: `-D clippy::needless-pass-by-value` implied by `-D warnings` error: this argument is passed by value, but not consumed in the function body --> $DIR/needless_pass_by_value.rs:29:11 | LL | fn bar(x: String, y: Wrapper) { | ^^^^^^ help: consider changing the type to: `&str` error: this argument is passed by value, but not consumed in the function body --> $DIR/needless_pass_by_value.rs:29:22 | LL | fn bar(x: String, y: Wrapper) { | ^^^^^^^ help: consider taking a reference instead: `&Wrapper` error: this argument is passed by value, but not consumed in the function body --> $DIR/needless_pass_by_value.rs:35:71 | LL | fn test_borrow_trait, U: AsRef, V>(t: T, u: U, v: V) { | ^ help: consider taking a reference instead: `&V` error: this argument is passed by value, but not consumed in the function body --> $DIR/needless_pass_by_value.rs:47:18 | LL | fn test_match(x: Option>, y: Option>) { | ^^^^^^^^^^^^^^^^^^^^^^ help: consider taking a reference instead | LL | fn test_match(x: &Option>, y: Option>) { LL | match *x { | error: this argument is passed by value, but not consumed in the function body --> $DIR/needless_pass_by_value.rs:60:24 | LL | fn test_destructure(x: Wrapper, y: Wrapper, z: Wrapper) { | ^^^^^^^ help: consider taking a reference instead: `&Wrapper` error: this argument is passed by value, but not consumed in the function body --> $DIR/needless_pass_by_value.rs:60:36 | LL | fn test_destructure(x: Wrapper, y: Wrapper, z: Wrapper) { | ^^^^^^^ help: consider taking a reference instead | LL | fn test_destructure(x: Wrapper, y: &Wrapper, z: Wrapper) { LL | let Wrapper(s) = z; // moved LL | let Wrapper(ref t) = *y; // not moved LL | let Wrapper(_) = *y; // still not moved | error: this argument is passed by value, but not consumed in the function body --> $DIR/needless_pass_by_value.rs:76:49 | LL | fn test_blanket_ref(_foo: T, _serializable: S) {} | ^ help: consider taking a reference instead: `&T` error: this argument is passed by value, but not consumed in the function body --> $DIR/needless_pass_by_value.rs:78:18 | LL | fn issue_2114(s: String, t: String, u: Vec, v: Vec) { | ^^^^^^ help: consider taking a reference instead: `&String` error: this argument is passed by value, but not consumed in the function body --> $DIR/needless_pass_by_value.rs:78:29 | LL | fn issue_2114(s: String, t: String, u: Vec, v: Vec) { | ^^^^^^ help: consider changing the type to | LL | fn issue_2114(s: String, t: &str, u: Vec, v: Vec) { | ^^^^ help: change `t.clone()` to | LL | let _ = t.to_string(); | ^^^^^^^^^^^^^ error: this argument is passed by value, but not consumed in the function body --> $DIR/needless_pass_by_value.rs:78:40 | LL | fn issue_2114(s: String, t: String, u: Vec, v: Vec) { | ^^^^^^^^ help: consider taking a reference instead: `&Vec` error: this argument is passed by value, but not consumed in the function body --> $DIR/needless_pass_by_value.rs:78:53 | LL | fn issue_2114(s: String, t: String, u: Vec, v: Vec) { | ^^^^^^^^ help: consider changing the type to | LL | fn issue_2114(s: String, t: String, u: Vec, v: &[i32]) { | ^^^^^^ help: change `v.clone()` to | LL | let _ = v.to_owned(); | ^^^^^^^^^^^^ error: this argument is passed by value, but not consumed in the function body --> $DIR/needless_pass_by_value.rs:91:12 | LL | s: String, | ^^^^^^ help: consider changing the type to: `&str` error: this argument is passed by value, but not consumed in the function body --> $DIR/needless_pass_by_value.rs:92:12 | LL | t: String, | ^^^^^^ help: consider taking a reference instead: `&String` error: this argument is passed by value, but not consumed in the function body --> $DIR/needless_pass_by_value.rs:101:23 | LL | fn baz(&self, _u: U, _s: Self) {} | ^ help: consider taking a reference instead: `&U` error: this argument is passed by value, but not consumed in the function body --> $DIR/needless_pass_by_value.rs:101:30 | LL | fn baz(&self, _u: U, _s: Self) {} | ^^^^ help: consider taking a reference instead: `&Self` error: this argument is passed by value, but not consumed in the function body --> $DIR/needless_pass_by_value.rs:123:24 | LL | fn bar_copy(x: u32, y: CopyWrapper) { | ^^^^^^^^^^^ help: consider taking a reference instead: `&CopyWrapper` | help: consider marking this type as Copy --> $DIR/needless_pass_by_value.rs:121:1 | LL | struct CopyWrapper(u32); | ^^^^^^^^^^^^^^^^^^^^^^^^ error: this argument is passed by value, but not consumed in the function body --> $DIR/needless_pass_by_value.rs:129:29 | LL | fn test_destructure_copy(x: CopyWrapper, y: CopyWrapper, z: CopyWrapper) { | ^^^^^^^^^^^ help: consider taking a reference instead: `&CopyWrapper` | help: consider marking this type as Copy --> $DIR/needless_pass_by_value.rs:121:1 | LL | struct CopyWrapper(u32); | ^^^^^^^^^^^^^^^^^^^^^^^^ error: this argument is passed by value, but not consumed in the function body --> $DIR/needless_pass_by_value.rs:129:45 | LL | fn test_destructure_copy(x: CopyWrapper, y: CopyWrapper, z: CopyWrapper) { | ^^^^^^^^^^^ | help: consider marking this type as Copy --> $DIR/needless_pass_by_value.rs:121:1 | LL | struct CopyWrapper(u32); | ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider taking a reference instead | LL | fn test_destructure_copy(x: CopyWrapper, y: &CopyWrapper, z: CopyWrapper) { LL | let CopyWrapper(s) = z; // moved LL | let CopyWrapper(ref t) = *y; // not moved LL | let CopyWrapper(_) = *y; // still not moved | error: this argument is passed by value, but not consumed in the function body --> $DIR/needless_pass_by_value.rs:129:61 | LL | fn test_destructure_copy(x: CopyWrapper, y: CopyWrapper, z: CopyWrapper) { | ^^^^^^^^^^^ | help: consider marking this type as Copy --> $DIR/needless_pass_by_value.rs:121:1 | LL | struct CopyWrapper(u32); | ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider taking a reference instead | LL | fn test_destructure_copy(x: CopyWrapper, y: CopyWrapper, z: &CopyWrapper) { LL | let CopyWrapper(s) = *z; // moved | error: this argument is passed by value, but not consumed in the function body --> $DIR/needless_pass_by_value.rs:141:40 | LL | fn some_fun<'b, S: Bar<'b, ()>>(_item: S) {} | ^ help: consider taking a reference instead: `&S` error: this argument is passed by value, but not consumed in the function body --> $DIR/needless_pass_by_value.rs:146:20 | LL | fn more_fun(_item: impl Club<'static, i32>) {} | ^^^^^^^^^^^^^^^^^^^^^^^ help: consider taking a reference instead: `&impl Club<'static, i32>` error: aborting due to 22 previous errors