error: const fns are not supported
 --> $DIR/unsupported.rs:6:1
  |
6 | const fn const_fn() {}
  | ^^^^^

error: async fns are not supported
 --> $DIR/unsupported.rs:9:1
  |
9 | async fn async_fn() {}
  | ^^^^^

error: generic functions are not supported
  --> $DIR/unsupported.rs:12:14
   |
12 | fn generic_fn<T>() {}
   |              ^^^

error: arguments are not supported
  --> $DIR/unsupported.rs:15:14
   |
15 | fn arguments(_x: i32) {}
   |              ^^^^^^^

error: arguments are not supported
  --> $DIR/unsupported.rs:18:31
   |
18 | unsafe extern "C" fn variadic(_arg: i32, _args: ...) {}
   |                               ^^^^^^^^^^^^^^^^^^^^^

warning: attributes may have unexpected behavior
  --> $DIR/unsupported.rs:21:1
   |
21 | #[warn(warnings)]
   | ^^^^^^^^^^^^^^^^^

error: async fns are not supported
  --> $DIR/unsupported.rs:25:1
   |
25 | async fn generic_async_args<T>(_x: T) {}
   | ^^^^^

error: generic functions are not supported
  --> $DIR/unsupported.rs:25:28
   |
25 | async fn generic_async_args<T>(_x: T) {}
   |                            ^^^

error: arguments are not supported
  --> $DIR/unsupported.rs:25:32
   |
25 | async fn generic_async_args<T>(_x: T) {}
   |                                ^^^^^