src/test/ui/rfcs/rfc-2396-target_feature-11/fn-traits.stderr

   1 error[E0277]: expected a `Fn<()>` closure, found `fn() {foo}`
   2   --> $DIR/fn-traits.rs:24:10
   3    |
   4 LL | fn call(f: impl Fn()) {
   5    |                 ---- required by this bound in `call`
   6 ...
   7 LL |     call(foo);
   8    |          ^^^ expected an `Fn<()>` closure, found `fn() {foo}`
   9    |
  10    = help: the trait `Fn<()>` is not implemented for `fn() {foo}`
  11    = note: wrap the `fn() {foo}` in a closure with no arguments: `|| { /* code */ }`
  12    = note: `#[target_feature]` functions do not implement the `Fn` traits
  13
  14 error[E0277]: expected a `FnMut<()>` closure, found `fn() {foo}`
  15   --> $DIR/fn-traits.rs:25:14
  16    |
  17 LL | fn call_mut(f: impl FnMut()) {
  18    |                     ------- required by this bound in `call_mut`
  19 ...
  20 LL |     call_mut(foo);
  21    |              ^^^ expected an `FnMut<()>` closure, found `fn() {foo}`
  22    |
  23    = help: the trait `FnMut<()>` is not implemented for `fn() {foo}`
  24    = note: wrap the `fn() {foo}` in a closure with no arguments: `|| { /* code */ }`
  25    = note: `#[target_feature]` functions do not implement the `Fn` traits
  26
  27 error[E0277]: expected a `FnOnce<()>` closure, found `fn() {foo}`
  28   --> $DIR/fn-traits.rs:26:15
  29    |
  30 LL | fn call_once(f: impl FnOnce()) {
  31    |                      -------- required by this bound in `call_once`
  32 ...
  33 LL |     call_once(foo);
  34    |               ^^^ expected an `FnOnce<()>` closure, found `fn() {foo}`
  35    |
  36    = help: the trait `FnOnce<()>` is not implemented for `fn() {foo}`
  37    = note: wrap the `fn() {foo}` in a closure with no arguments: `|| { /* code */ }`
  38    = note: `#[target_feature]` functions do not implement the `Fn` traits
  39
  40 error[E0277]: expected a `Fn<()>` closure, found `unsafe fn() {foo_unsafe}`
  41   --> $DIR/fn-traits.rs:28:10
  42    |
  43 LL | fn call(f: impl Fn()) {
  44    |                 ---- required by this bound in `call`
  45 ...
  46 LL |     call(foo_unsafe);
  47    |          ^^^^^^^^^^ expected an `Fn<()>` closure, found `unsafe fn() {foo_unsafe}`
  48    |
  49    = help: the trait `Fn<()>` is not implemented for `unsafe fn() {foo_unsafe}`
  50    = note: wrap the `unsafe fn() {foo_unsafe}` in a closure with no arguments: `|| { /* code */ }`
  51    = note: `#[target_feature]` functions do not implement the `Fn` traits
  52
  53 error[E0277]: expected a `FnMut<()>` closure, found `unsafe fn() {foo_unsafe}`
  54   --> $DIR/fn-traits.rs:30:14
  55    |
  56 LL | fn call_mut(f: impl FnMut()) {
  57    |                     ------- required by this bound in `call_mut`
  58 ...
  59 LL |     call_mut(foo_unsafe);
  60    |              ^^^^^^^^^^ expected an `FnMut<()>` closure, found `unsafe fn() {foo_unsafe}`
  61    |
  62    = help: the trait `FnMut<()>` is not implemented for `unsafe fn() {foo_unsafe}`
  63    = note: wrap the `unsafe fn() {foo_unsafe}` in a closure with no arguments: `|| { /* code */ }`
  64    = note: `#[target_feature]` functions do not implement the `Fn` traits
  65
  66 error[E0277]: expected a `FnOnce<()>` closure, found `unsafe fn() {foo_unsafe}`
  67   --> $DIR/fn-traits.rs:32:15
  68    |
  69 LL | fn call_once(f: impl FnOnce()) {
  70    |                      -------- required by this bound in `call_once`
  71 ...
  72 LL |     call_once(foo_unsafe);
  73    |               ^^^^^^^^^^ expected an `FnOnce<()>` closure, found `unsafe fn() {foo_unsafe}`
  74    |
  75    = help: the trait `FnOnce<()>` is not implemented for `unsafe fn() {foo_unsafe}`
  76    = note: wrap the `unsafe fn() {foo_unsafe}` in a closure with no arguments: `|| { /* code */ }`
  77    = note: `#[target_feature]` functions do not implement the `Fn` traits
  78
  79 error: aborting due to 6 previous errors
  80
  81 For more information about this error, try `rustc --explain E0277`.