error: this argument is passed by value, but not consumed in the function body
 --> $DIR/needless_pass_by_value.rs:9:23
  |
9 | fn foo<T: Default>(v: Vec<T>, w: Vec<T>, mut x: Vec<T>, y: Vec<T>) -> Vec<T> {
  |                       ^^^^^^ help: consider changing the type to: `&[T]`
  |
  = note: `-D 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:23:11
   |
23 | 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:23:22
   |
23 | 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:29:71
   |
29 | fn test_borrow_trait<T: Borrow<str>, U: AsRef<str>, 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:41:18
   |
41 | fn test_match(x: Option<Option<String>>, y: Option<Option<String>>) {
   |                  ^^^^^^^^^^^^^^^^^^^^^^
help: consider taking a reference instead
   |
41 | fn test_match(x: &Option<Option<String>>, y: Option<Option<String>>) {
42 |     match *x {
   |

error: this argument is passed by value, but not consumed in the function body
  --> $DIR/needless_pass_by_value.rs:54:24
   |
54 | 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:54:36
   |
54 | fn test_destructure(x: Wrapper, y: Wrapper, z: Wrapper) {
   |                                    ^^^^^^^
help: consider taking a reference instead
   |
54 | fn test_destructure(x: Wrapper, y: &Wrapper, z: Wrapper) {
55 |     let Wrapper(s) = z; // moved
56 |     let Wrapper(ref t) = *y; // not moved
57 |     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:70:49
   |
70 | fn test_blanket_ref<T: Foo, S: Serialize>(_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:72:18
   |
72 | fn issue_2114(s: String, t: String, u: Vec<i32>, v: Vec<i32>) {
   |                  ^^^^^^ 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:72:29
   |
72 | fn issue_2114(s: String, t: String, u: Vec<i32>, v: Vec<i32>) {
   |                             ^^^^^^
help: consider changing the type to
   |
72 | fn issue_2114(s: String, t: &str, u: Vec<i32>, v: Vec<i32>) {
   |                             ^^^^
help: change `t.clone()` to
   |
74 |     let _ = t.to_string();
   |             ^^^^^^^^^^^^^

error: this argument is passed by value, but not consumed in the function body
  --> $DIR/needless_pass_by_value.rs:72:40
   |
72 | fn issue_2114(s: String, t: String, u: Vec<i32>, v: Vec<i32>) {
   |                                        ^^^^^^^^ help: consider taking a reference instead: `&Vec<i32>`

error: this argument is passed by value, but not consumed in the function body
  --> $DIR/needless_pass_by_value.rs:72:53
   |
72 | fn issue_2114(s: String, t: String, u: Vec<i32>, v: Vec<i32>) {
   |                                                     ^^^^^^^^
help: consider changing the type to
   |
72 | fn issue_2114(s: String, t: String, u: Vec<i32>, v: &[i32]) {
   |                                                     ^^^^^^
help: change `v.clone()` to
   |
76 |     let _ = v.to_owned();
   |             ^^^^^^^^^^^^

error: this argument is passed by value, but not consumed in the function body
  --> $DIR/needless_pass_by_value.rs:84:12
   |
84 |         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:85:12
   |
85 |         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:97:13
   |
97 |         _u: U,
   |             ^ 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:98:13
   |
98 |         _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:120:24
    |
120 | 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:118:1
    |
118 | struct CopyWrapper(u32);
    | ^^^^^^^^^^^^^^^^^^^^^^^^

error: this argument is passed by value, but not consumed in the function body
   --> $DIR/needless_pass_by_value.rs:126:29
    |
126 | 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:118:1
    |
118 | struct CopyWrapper(u32);
    | ^^^^^^^^^^^^^^^^^^^^^^^^

error: this argument is passed by value, but not consumed in the function body
   --> $DIR/needless_pass_by_value.rs:126:45
    |
126 | fn test_destructure_copy(x: CopyWrapper, y: CopyWrapper, z: CopyWrapper) {
    |                                             ^^^^^^^^^^^
    |
help: consider marking this type as Copy
   --> $DIR/needless_pass_by_value.rs:118:1
    |
118 | struct CopyWrapper(u32);
    | ^^^^^^^^^^^^^^^^^^^^^^^^
help: consider taking a reference instead
    |
126 | fn test_destructure_copy(x: CopyWrapper, y: &CopyWrapper, z: CopyWrapper) {
127 |     let CopyWrapper(s) = z; // moved
128 |     let CopyWrapper(ref t) = *y; // not moved
129 |     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:126:61
    |
126 | fn test_destructure_copy(x: CopyWrapper, y: CopyWrapper, z: CopyWrapper) {
    |                                                             ^^^^^^^^^^^
    |
help: consider marking this type as Copy
   --> $DIR/needless_pass_by_value.rs:118:1
    |
118 | struct CopyWrapper(u32);
    | ^^^^^^^^^^^^^^^^^^^^^^^^
help: consider taking a reference instead
    |
126 | fn test_destructure_copy(x: CopyWrapper, y: CopyWrapper, z: &CopyWrapper) {
127 |     let CopyWrapper(s) = *z; // moved
    |

error: aborting due to 20 previous errors