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> {
  |                       ^^^^^^
  |
note: lint level defined here
 --> $DIR/needless_pass_by_value.rs:4:9
  |
4 | #![deny(needless_pass_by_value)]
  |         ^^^^^^^^^^^^^^^^^^^^^^
help: consider changing the type to `&[T]`
  | fn foo<T: Default>(v: &[T], w: Vec<T>, mut x: Vec<T>, y: Vec<T>) -> Vec<T> {

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`
   | fn bar(x: &str, y: Wrapper) {

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
   | fn bar(x: String, y: &Wrapper) {

error: this argument is passed by value, but not consumed in the function body
  --> $DIR/needless_pass_by_value.rs:29:63
   |
29 | fn test_borrow_trait<T: std::borrow::Borrow<str>, U>(t: T, u: U) {
   |                                                               ^
   |
help: consider taking a reference instead
   | fn test_borrow_trait<T: std::borrow::Borrow<str>, U>(t: T, u: &U) {

error: this argument is passed by value, but not consumed in the function body
  --> $DIR/needless_pass_by_value.rs:40:18
   |
40 | fn test_match(x: Option<Option<String>>, y: Option<Option<String>>) {
   |                  ^^^^^^^^^^^^^^^^^^^^^^
   |
help: consider taking a reference instead
   | fn test_match(x: &Option<Option<String>>, y: Option<Option<String>>) {
   |     match *x {

error: this argument is passed by value, but not consumed in the function body
  --> $DIR/needless_pass_by_value.rs:53:24
   |
53 | fn test_destructure(x: Wrapper, y: Wrapper, z: Wrapper) {
   |                        ^^^^^^^
   |
help: consider taking a reference instead
   | fn test_destructure(x: &Wrapper, y: Wrapper, z: Wrapper) {

error: this argument is passed by value, but not consumed in the function body
  --> $DIR/needless_pass_by_value.rs:53:36
   |
53 | fn test_destructure(x: Wrapper, y: Wrapper, z: Wrapper) {
   |                                    ^^^^^^^
   |
help: consider taking a reference instead
   | fn test_destructure(x: Wrapper, y: &Wrapper, z: Wrapper) {
   |     let Wrapper(s) = z; // moved
   |     let Wrapper(ref t) = *y; // not moved
   |     let Wrapper(_) = *y; // still not moved

error: aborting due to 7 previous errors