1error[E0581]: return type references lifetime `'a`, which is not constrained by the fn input types 2 --> $DIR/bound-lifetime-in-return-only.rs:12:28 3 | 4LL | fn sig1(_: for<'a> fn() -> &'a i32) { 5 | ^^^^^^^ 6 7error[E0581]: return type references lifetime `'a`, which is not constrained by the fn input types 8 --> $DIR/bound-lifetime-in-return-only.rs:17:39 9 | 10LL | fn sig2(_: for<'a, 'b> fn(&'b i32) -> &'a i32) { 11 | ^^^^^^^ 12 13error: aborting due to 2 previous errors 14 15For more information about this error, try `rustc --explain E0581`. 16