src/tools/clippy/tests/ui/needless_pass_by_value.stderr

   1 error: this argument is passed by value, but not consumed in the function body
   2   --> $DIR/needless_pass_by_value.rs:14:23
   3    |
   4 14 | fn foo<T: Default>(v: Vec<T>, w: Vec<T>, mut x: Vec<T>, y: Vec<T>) -> Vec<T> {
   5    |                       ^^^^^^ help: consider changing the type to: `&[T]`
   6    |
   7    = note: `-D needless-pass-by-value` implied by `-D warnings`
   8
   9 error: this argument is passed by value, but not consumed in the function body
  10   --> $DIR/needless_pass_by_value.rs:28:11
  11    |
  12 28 | fn bar(x: String, y: Wrapper) {
  13    |           ^^^^^^ help: consider changing the type to: `&str`
  14
  15 error: this argument is passed by value, but not consumed in the function body
  16   --> $DIR/needless_pass_by_value.rs:28:22
  17    |
  18 28 | fn bar(x: String, y: Wrapper) {
  19    |                      ^^^^^^^ help: consider taking a reference instead: `&Wrapper`
  20
  21 error: this argument is passed by value, but not consumed in the function body
  22   --> $DIR/needless_pass_by_value.rs:34:71
  23    |
  24 34 | fn test_borrow_trait<T: Borrow<str>, U: AsRef<str>, V>(t: T, u: U, v: V) {
  25    |                                                                       ^ help: consider taking a reference instead: `&V`
  26
  27 error: this argument is passed by value, but not consumed in the function body
  28   --> $DIR/needless_pass_by_value.rs:46:18
  29    |
  30 46 | fn test_match(x: Option<Option<String>>, y: Option<Option<String>>) {
  31    |                  ^^^^^^^^^^^^^^^^^^^^^^
  32 help: consider taking a reference instead
  33    |
  34 46 | fn test_match(x: &Option<Option<String>>, y: Option<Option<String>>) {
  35 47 |     match *x {
  36    |
  37
  38 error: this argument is passed by value, but not consumed in the function body
  39   --> $DIR/needless_pass_by_value.rs:59:24
  40    |
  41 59 | fn test_destructure(x: Wrapper, y: Wrapper, z: Wrapper) {
  42    |                        ^^^^^^^ help: consider taking a reference instead: `&Wrapper`
  43
  44 error: this argument is passed by value, but not consumed in the function body
  45   --> $DIR/needless_pass_by_value.rs:59:36
  46    |
  47 59 | fn test_destructure(x: Wrapper, y: Wrapper, z: Wrapper) {
  48    |                                    ^^^^^^^
  49 help: consider taking a reference instead
  50    |
  51 59 | fn test_destructure(x: Wrapper, y: &Wrapper, z: Wrapper) {
  52 60 |     let Wrapper(s) = z; // moved
  53 61 |     let Wrapper(ref t) = *y; // not moved
  54 62 |     let Wrapper(_) = *y; // still not moved
  55    |
  56
  57 error: this argument is passed by value, but not consumed in the function body
  58   --> $DIR/needless_pass_by_value.rs:75:49
  59    |
  60 75 | fn test_blanket_ref<T: Foo, S: Serialize>(_foo: T, _serializable: S) {}
  61    |                                                 ^ help: consider taking a reference instead: `&T`
  62
  63 error: this argument is passed by value, but not consumed in the function body
  64   --> $DIR/needless_pass_by_value.rs:77:18
  65    |
  66 77 | fn issue_2114(s: String, t: String, u: Vec<i32>, v: Vec<i32>) {
  67    |                  ^^^^^^ help: consider taking a reference instead: `&String`
  68
  69 error: this argument is passed by value, but not consumed in the function body
  70   --> $DIR/needless_pass_by_value.rs:77:29
  71    |
  72 77 | fn issue_2114(s: String, t: String, u: Vec<i32>, v: Vec<i32>) {
  73    |                             ^^^^^^
  74 help: consider changing the type to
  75    |
  76 77 | fn issue_2114(s: String, t: &str, u: Vec<i32>, v: Vec<i32>) {
  77    |                             ^^^^
  78 help: change `t.clone()` to
  79    |
  80 79 |     let _ = t.to_string();
  81    |             ^^^^^^^^^^^^^
  82
  83 error: this argument is passed by value, but not consumed in the function body
  84   --> $DIR/needless_pass_by_value.rs:77:40
  85    |
  86 77 | fn issue_2114(s: String, t: String, u: Vec<i32>, v: Vec<i32>) {
  87    |                                        ^^^^^^^^ help: consider taking a reference instead: `&Vec<i32>`
  88
  89 error: this argument is passed by value, but not consumed in the function body
  90   --> $DIR/needless_pass_by_value.rs:77:53
  91    |
  92 77 | fn issue_2114(s: String, t: String, u: Vec<i32>, v: Vec<i32>) {
  93    |                                                     ^^^^^^^^
  94 help: consider changing the type to
  95    |
  96 77 | fn issue_2114(s: String, t: String, u: Vec<i32>, v: &[i32]) {
  97    |                                                     ^^^^^^
  98 help: change `v.clone()` to
  99    |
 100 81 |     let _ = v.to_owned();
 101    |             ^^^^^^^^^^^^
 102
 103 error: this argument is passed by value, but not consumed in the function body
 104   --> $DIR/needless_pass_by_value.rs:89:12
 105    |
 106 89 |         s: String,
 107    |            ^^^^^^ help: consider changing the type to: `&str`
 108
 109 error: this argument is passed by value, but not consumed in the function body
 110   --> $DIR/needless_pass_by_value.rs:90:12
 111    |
 112 90 |         t: String,
 113    |            ^^^^^^ help: consider taking a reference instead: `&String`
 114
 115 error: this argument is passed by value, but not consumed in the function body
 116    --> $DIR/needless_pass_by_value.rs:102:13
 117     |
 118 102 |         _u: U,
 119     |             ^ help: consider taking a reference instead: `&U`
 120
 121 error: this argument is passed by value, but not consumed in the function body
 122    --> $DIR/needless_pass_by_value.rs:103:13
 123     |
 124 103 |         _s: Self,
 125     |             ^^^^ help: consider taking a reference instead: `&Self`
 126
 127 error: this argument is passed by value, but not consumed in the function body
 128    --> $DIR/needless_pass_by_value.rs:125:24
 129     |
 130 125 | fn bar_copy(x: u32, y: CopyWrapper) {
 131     |                        ^^^^^^^^^^^ help: consider taking a reference instead: `&CopyWrapper`
 132     |
 133 help: consider marking this type as Copy
 134    --> $DIR/needless_pass_by_value.rs:123:1
 135     |
 136 123 | struct CopyWrapper(u32);
 137     | ^^^^^^^^^^^^^^^^^^^^^^^^
 138
 139 error: this argument is passed by value, but not consumed in the function body
 140    --> $DIR/needless_pass_by_value.rs:131:29
 141     |
 142 131 | fn test_destructure_copy(x: CopyWrapper, y: CopyWrapper, z: CopyWrapper) {
 143     |                             ^^^^^^^^^^^ help: consider taking a reference instead: `&CopyWrapper`
 144     |
 145 help: consider marking this type as Copy
 146    --> $DIR/needless_pass_by_value.rs:123:1
 147     |
 148 123 | struct CopyWrapper(u32);
 149     | ^^^^^^^^^^^^^^^^^^^^^^^^
 150
 151 error: this argument is passed by value, but not consumed in the function body
 152    --> $DIR/needless_pass_by_value.rs:131:45
 153     |
 154 131 | fn test_destructure_copy(x: CopyWrapper, y: CopyWrapper, z: CopyWrapper) {
 155     |                                             ^^^^^^^^^^^
 156     |
 157 help: consider marking this type as Copy
 158    --> $DIR/needless_pass_by_value.rs:123:1
 159     |
 160 123 | struct CopyWrapper(u32);
 161     | ^^^^^^^^^^^^^^^^^^^^^^^^
 162 help: consider taking a reference instead
 163     |
 164 131 | fn test_destructure_copy(x: CopyWrapper, y: &CopyWrapper, z: CopyWrapper) {
 165 132 |     let CopyWrapper(s) = z; // moved
 166 133 |     let CopyWrapper(ref t) = *y; // not moved
 167 134 |     let CopyWrapper(_) = *y; // still not moved
 168     |
 169
 170 error: this argument is passed by value, but not consumed in the function body
 171    --> $DIR/needless_pass_by_value.rs:131:61
 172     |
 173 131 | fn test_destructure_copy(x: CopyWrapper, y: CopyWrapper, z: CopyWrapper) {
 174     |                                                             ^^^^^^^^^^^
 175     |
 176 help: consider marking this type as Copy
 177    --> $DIR/needless_pass_by_value.rs:123:1
 178     |
 179 123 | struct CopyWrapper(u32);
 180     | ^^^^^^^^^^^^^^^^^^^^^^^^
 181 help: consider taking a reference instead
 182     |
 183 131 | fn test_destructure_copy(x: CopyWrapper, y: CopyWrapper, z: &CopyWrapper) {
 184 132 |     let CopyWrapper(s) = *z; // moved
 185     |
 186
 187 error: aborting due to 20 previous errors
 188