src/test/ui/unboxed-closures/unboxed-closures-infer-fn-once-move-from-projection.stderr

   1 error[E0525]: expected a closure that implements the `Fn` trait, but this closure only implements `FnOnce`
   2   --> $DIR/unboxed-closures-infer-fn-once-move-from-projection.rs:14:13
   3    |
   4 LL |     let c = || drop(y.0);
   5    |             ^^^^^^^^---^
   6    |             |       |
   7    |             |       closure is `FnOnce` because it moves the variable `y` out of its environment
   8    |             this closure implements `FnOnce`, not `Fn`
   9 LL |     foo(c);
  10    |     --- the requirement to implement `Fn` derives from here
  11
  12 error: aborting due to previous error
  13
  14 For more information about this error, try `rustc --explain E0525`.