1 error[E0308]: mismatched types
2 --> $DIR/issue-101280.rs:6:5
4 LL | fn f<'r>(f: fn(Cell<(&'r i32, &i32)>)) -> Ty {
5 | -- expected `for<'r> fn(Cell<(&'r i32, &'r i32)>)` because of return type
7 | ^ one type is more general than the other
9 = note: expected fn pointer `for<'r> fn(Cell<(&'r _, &'r _)>)`
10 found fn pointer `for<'a> fn(Cell<(&'r _, &'a _)>)`
12 error: aborting due to 1 previous error
14 For more information about this error, try `rustc --explain E0308`.