error[E0401]: can't use generic parameters from outer item
  --> $DIR/generic-params-nested-fn-scope-error.rs:5:16
   |
LL | fn foo<U>(v: Vec<U>) -> U {
   |        - type parameter from outer item
LL |     fn bar(w: [U]) -> U {
   |           -    ^ use of generic parameter from outer item
   |           |
   |           help: try introducing a local generic parameter here: `<U>`

error[E0401]: can't use generic parameters from outer item
  --> $DIR/generic-params-nested-fn-scope-error.rs:5:23
   |
LL | fn foo<U>(v: Vec<U>) -> U {
   |        - type parameter from outer item
LL |     fn bar(w: [U]) -> U {
   |           -           ^ use of generic parameter from outer item
   |           |
   |           help: try introducing a local generic parameter here: `<U>`

error: aborting due to 2 previous errors

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