1 error[E0308]: mismatched types
2 --> $DIR/hr-subtype.rs:49:26
4 LL | gimme::<$t1>(None::<$t2>);
5 | ^^^^^^^^^^^ expected concrete lifetime, found bound lifetime parameter 'a
7 LL | / check! { bound_contra_a_contra_b_ret_co_a: (for<'a,'b> fn(Contra<'a>, Contra<'b>) -> Co<'a>,
8 LL | | for<'a> fn(Contra<'a>, Contra<'a>) -> Co<'a>) }
9 | |______________________________________________________________________________________________- in this macro invocation
11 = note: expected type `std::option::Option<for<'a, 'b> fn(Contra<'a>, Contra<'b>) -> Co<'a>>`
12 found type `std::option::Option<for<'a> fn(Contra<'a>, Contra<'a>) -> Co<'a>>`
14 error: aborting due to previous error
16 For more information about this error, try `rustc --explain E0308`.