rust/src/test/ui/parser/fn-header-semantic-fail.stderr

error[E0706]: trait fns cannot be declared `async`
  --> $DIR/fn-header-semantic-fail.rs:17:9
   |
LL |         async fn ft1();
   |         -----^^^^^^^^^^
   |         |
   |         `async` because of this
   |
   = note: `async` trait functions are not currently supported
   = note: consider using the `async-trait` crate: https://crates.io/crates/async-trait

error[E0379]: trait fns cannot be declared const
  --> $DIR/fn-header-semantic-fail.rs:19:9
   |
LL |         const fn ft3();
   |         ^^^^^ trait fns cannot be const

error[E0706]: trait fns cannot be declared `async`
  --> $DIR/fn-header-semantic-fail.rs:21:21
   |
LL |         /* const */ async unsafe extern "C" fn ft5();
   |                     -----^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |                     |
   |                     `async` because of this
   |
   = note: `async` trait functions are not currently supported
   = note: consider using the `async-trait` crate: https://crates.io/crates/async-trait

error[E0706]: trait fns cannot be declared `async`
  --> $DIR/fn-header-semantic-fail.rs:28:9
   |
LL |         async fn ft1() {}
   |         -----^^^^^^^^^^^^
   |         |
   |         `async` because of this
   |
   = note: `async` trait functions are not currently supported
   = note: consider using the `async-trait` crate: https://crates.io/crates/async-trait

error[E0379]: trait fns cannot be declared const
  --> $DIR/fn-header-semantic-fail.rs:31:9
   |
LL |         const fn ft3() {}
   |         ^^^^^ trait fns cannot be const

error[E0706]: trait fns cannot be declared `async`
  --> $DIR/fn-header-semantic-fail.rs:33:21
   |
LL |         /* const */ async unsafe extern "C" fn ft5() {}
   |                     -----^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |                     |
   |                     `async` because of this
   |
   = note: `async` trait functions are not currently supported
   = note: consider using the `async-trait` crate: https://crates.io/crates/async-trait

error: functions in `extern` blocks cannot have qualifiers
  --> $DIR/fn-header-semantic-fail.rs:49:18
   |
LL |     extern {
   |     ------ in this `extern` block
LL |         async fn fe1();
   |         ---------^^^
   |         |
   |         help: remove the qualifiers: `fn`

error: functions in `extern` blocks cannot have qualifiers
  --> $DIR/fn-header-semantic-fail.rs:50:19
   |
LL |     extern {
   |     ------ in this `extern` block
LL |         async fn fe1();
LL |         unsafe fn fe2();
   |         ----------^^^
   |         |
   |         help: remove the qualifiers: `fn`

error: functions in `extern` blocks cannot have qualifiers
  --> $DIR/fn-header-semantic-fail.rs:51:18
   |
LL |     extern {
   |     ------ in this `extern` block
...
LL |         const fn fe3();
   |         ---------^^^
   |         |
   |         help: remove the qualifiers: `fn`

error: functions in `extern` blocks cannot have qualifiers
  --> $DIR/fn-header-semantic-fail.rs:52:23
   |
LL |     extern {
   |     ------ in this `extern` block
...
LL |         extern "C" fn fe4();
   |         --------------^^^
   |         |
   |         help: remove the qualifiers: `fn`

error: functions in `extern` blocks cannot have qualifiers
  --> $DIR/fn-header-semantic-fail.rs:53:48
   |
LL |     extern {
   |     ------ in this `extern` block
...
LL |         /* const */ async unsafe extern "C" fn fe5();
   |                     ---------------------------^^^
   |                     |
   |                     help: remove the qualifiers: `fn`

error[E0053]: method `ft1` has an incompatible type for trait
  --> $DIR/fn-header-semantic-fail.rs:28:24
   |
LL |         async fn ft1();
   |                       - type in trait
...
LL |         async fn ft1() {}
   |                        ^
   |                        |
   |                        the `Output` of this `async fn`'s found opaque type
   |                        expected `()`, found opaque type
   |
   = note: expected fn pointer `fn()`
              found fn pointer `fn() -> impl std::future::Future`

error[E0053]: method `ft5` has an incompatible type for trait
  --> $DIR/fn-header-semantic-fail.rs:33:54
   |
LL |         /* const */ async unsafe extern "C" fn ft5();
   |                                                     - type in trait
...
LL |         /* const */ async unsafe extern "C" fn ft5() {}
   |                                                      ^
   |                                                      |
   |                                                      the `Output` of this `async fn`'s found opaque type
   |                                                      expected `()`, found opaque type
   |
   = note: expected fn pointer `unsafe extern "C" fn()`
              found fn pointer `unsafe extern "C" fn() -> impl std::future::Future`

error: aborting due to 13 previous errors

Some errors have detailed explanations: E0053, E0379, E0706.
For more information about an error, try `rustc --explain E0053`.