error[E0401]: can't use type parameters from outer function
  --> $DIR/type-arg-out-of-scope.rs:13:25
   |
LL | fn foo<T>(x: T) {
   |        - type variable from outer function
LL |     fn bar(f: Box<FnMut(T) -> T>) { }
   |        ---              ^ use of type variable from outer function
   |        |
   |        help: try using a local type parameter instead: `bar<T>`

error[E0401]: can't use type parameters from outer function
  --> $DIR/type-arg-out-of-scope.rs:13:31
   |
LL | fn foo<T>(x: T) {
   |        - type variable from outer function
LL |     fn bar(f: Box<FnMut(T) -> T>) { }
   |        ---                    ^ use of type variable from outer function
   |        |
   |        help: try using a local type parameter instead: `bar<T>`

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0401`.