1 error[E0308]: mismatched types
2 --> $DIR/hr-subtype.rs:39:26
4 LL | gimme::<$t1>(None::<$t2>);
5 | ^^^^^^^^^^^ expected concrete lifetime, found bound lifetime parameter 'a
7 LL | / check! { bound_co_a_b_vs_bound_co_a: (for<'a,'b> fn(Co<'a>, Co<'b>),
8 LL | | for<'a> fn(Co<'a>, Co<'a>)) }
9 | |______________________________________________________________________- in this macro invocation
11 = note: expected enum `std::option::Option<for<'a, 'b> fn(Co<'a>, Co<'b>)>`
12 found enum `std::option::Option<for<'a> fn(Co<'a>, Co<'a>)>`
13 = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
15 error: aborting due to previous error
17 For more information about this error, try `rustc --explain E0308`.