src/test/ui/closures/coerce-unsafe-to-closure.stderr

   1 error[E0277]: expected a `FnOnce<(&str,)>` closure, found `unsafe extern "rust-intrinsic" fn(_) -> _ {transmute::<_, _>}`
   2   --> $DIR/coerce-unsafe-to-closure.rs:2:44
   3    |
   4 LL |     let x: Option<&[u8]> = Some("foo").map(std::mem::transmute);
   5    |                                        --- ^^^^^^^^^^^^^^^^^^^ expected an `FnOnce<(&str,)>` closure, found `unsafe extern "rust-intrinsic" fn(_) -> _ {transmute::<_, _>}`
   6    |                                        |
   7    |                                        required by a bound introduced by this call
   8    |
   9    = help: the trait `FnOnce<(&str,)>` is not implemented for `unsafe extern "rust-intrinsic" fn(_) -> _ {transmute::<_, _>}`
  10
  11 error: aborting due to previous error
  12
  13 For more information about this error, try `rustc --explain E0277`.