error[E0277]: `for<'r> fn(&'r i32) -> &'r i32 {foo}` doesn't implement `Debug`
--> $DIR/issue-77910-1.rs:8:5
|
+LL | fn foo(s: &i32) -> &i32 {
+ | --- consider calling this function
+...
LL | assert_eq!(foo, y);
| ^^^^^^^^^^^^^^^^^^ `for<'r> fn(&'r i32) -> &'r i32 {foo}` cannot be formatted using `{:?}` because it doesn't implement `Debug`
|
= help: the trait `Debug` is not implemented for `for<'r> fn(&'r i32) -> &'r i32 {foo}`
- = help: the following other types implement trait `Debug`:
- extern "C" fn() -> Ret
- extern "C" fn(A) -> Ret
- extern "C" fn(A, ...) -> Ret
- extern "C" fn(A, B) -> Ret
- extern "C" fn(A, B, ...) -> Ret
- extern "C" fn(A, B, C) -> Ret
- extern "C" fn(A, B, C, ...) -> Ret
- extern "C" fn(A, B, C, D) -> Ret
- and 68 others
+ = help: use parentheses to call the function: `foo(s)`
= note: this error originates in the macro `assert_eq` (in Nightly builds, run with -Z macro-backtrace for more info)
error: aborting due to 2 previous errors