error: this argument is passed by value, but not consumed in the function body
  --> tests/ui/needless_pass_by_value.rs:18:23
   |
LL | 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 clippy::needless-pass-by-value` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::needless_pass_by_value)]`

error: this argument is passed by value, but not consumed in the function body
  --> tests/ui/needless_pass_by_value.rs:34:11
   |
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
  --> tests/ui/needless_pass_by_value.rs:34:22
   |
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
  --> tests/ui/needless_pass_by_value.rs:42:71
   |
LL | 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
  --> tests/ui/needless_pass_by_value.rs:55:18
   |
LL | fn test_match(x: Option<Option<String>>, y: Option<Option<String>>) {
   |                  ^^^^^^^^^^^^^^^^^^^^^^ help: consider taking a reference instead: `&Option<Option<String>>`

error: this argument is passed by value, but not consumed in the function body
  --> tests/ui/needless_pass_by_value.rs:69:24
   |
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
  --> tests/ui/needless_pass_by_value.rs:69:36
   |
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
  --> tests/ui/needless_pass_by_value.rs:87:49
   |
LL | fn test_blanket_ref<T: Foo, S: Serialize>(vals: T, serializable: S) {}
   |                                                 ^ help: consider taking a reference instead: `&T`

error: this argument is passed by value, but not consumed in the function body
  --> tests/ui/needless_pass_by_value.rs:90:18
   |
LL | 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
  --> tests/ui/needless_pass_by_value.rs:90:29
   |
LL | fn issue_2114(s: String, t: String, u: Vec<i32>, v: Vec<i32>) {
   |                             ^^^^^^
   |
help: consider changing the type to
   |
LL | fn issue_2114(s: String, t: &str, u: Vec<i32>, v: Vec<i32>) {
   |                             ~~~~
help: change `t.clone()` to
   |
LL |     let _ = t.to_string();
   |             ~~~~~~~~~~~~~

error: this argument is passed by value, but not consumed in the function body
  --> tests/ui/needless_pass_by_value.rs:90:40
   |
LL | 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
  --> tests/ui/needless_pass_by_value.rs:90:53
   |
LL | fn issue_2114(s: String, t: String, u: Vec<i32>, v: Vec<i32>) {
   |                                                     ^^^^^^^^
   |
help: consider changing the type to
   |
LL | fn issue_2114(s: String, t: String, u: Vec<i32>, 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
  --> tests/ui/needless_pass_by_value.rs:107:12
   |
LL |         s: String,
   |            ^^^^^^ help: consider changing the type to: `&str`

error: this argument is passed by value, but not consumed in the function body
  --> tests/ui/needless_pass_by_value.rs:109:12
   |
LL |         t: String,
   |            ^^^^^^ help: consider taking a reference instead: `&String`

error: this argument is passed by value, but not consumed in the function body
  --> tests/ui/needless_pass_by_value.rs:119:23
   |
LL |     fn baz(&self, uu: U, ss: Self) {}
   |                       ^ help: consider taking a reference instead: `&U`

error: this argument is passed by value, but not consumed in the function body
  --> tests/ui/needless_pass_by_value.rs:119:30
   |
LL |     fn baz(&self, uu: U, ss: Self) {}
   |                              ^^^^ help: consider taking a reference instead: `&Self`

error: this argument is passed by value, but not consumed in the function body
  --> tests/ui/needless_pass_by_value.rs:143:24
   |
LL | fn bar_copy(x: u32, y: CopyWrapper) {
   |                        ^^^^^^^^^^^ help: consider taking a reference instead: `&CopyWrapper`
   |
help: or consider marking this type as `Copy`
  --> tests/ui/needless_pass_by_value.rs:141:1
   |
LL | struct CopyWrapper(u32);
   | ^^^^^^^^^^^^^^^^^^

error: this argument is passed by value, but not consumed in the function body
  --> tests/ui/needless_pass_by_value.rs:150:29
   |
LL | fn test_destructure_copy(x: CopyWrapper, y: CopyWrapper, z: CopyWrapper) {
   |                             ^^^^^^^^^^^ help: consider taking a reference instead: `&CopyWrapper`
   |
help: or consider marking this type as `Copy`
  --> tests/ui/needless_pass_by_value.rs:141:1
   |
LL | struct CopyWrapper(u32);
   | ^^^^^^^^^^^^^^^^^^

error: this argument is passed by value, but not consumed in the function body
  --> tests/ui/needless_pass_by_value.rs:150:45
   |
LL | fn test_destructure_copy(x: CopyWrapper, y: CopyWrapper, z: CopyWrapper) {
   |                                             ^^^^^^^^^^^ help: consider taking a reference instead: `&CopyWrapper`
   |
help: or consider marking this type as `Copy`
  --> tests/ui/needless_pass_by_value.rs:141:1
   |
LL | struct CopyWrapper(u32);
   | ^^^^^^^^^^^^^^^^^^

error: this argument is passed by value, but not consumed in the function body
  --> tests/ui/needless_pass_by_value.rs:150:61
   |
LL | fn test_destructure_copy(x: CopyWrapper, y: CopyWrapper, z: CopyWrapper) {
   |                                                             ^^^^^^^^^^^ help: consider taking a reference instead: `&CopyWrapper`
   |
help: or consider marking this type as `Copy`
  --> tests/ui/needless_pass_by_value.rs:141:1
   |
LL | struct CopyWrapper(u32);
   | ^^^^^^^^^^^^^^^^^^

error: this argument is passed by value, but not consumed in the function body
  --> tests/ui/needless_pass_by_value.rs:165:40
   |
LL | fn some_fun<'b, S: Bar<'b, ()>>(items: S) {}
   |                                        ^ help: consider taking a reference instead: `&S`

error: this argument is passed by value, but not consumed in the function body
  --> tests/ui/needless_pass_by_value.rs:171:20
   |
LL | fn more_fun(items: impl Club<'static, i32>) {}
   |                    ^^^^^^^^^^^^^^^^^^^^^^^ help: consider taking a reference instead: `&impl Club<'static, i32>`

error: aborting due to 22 previous errors