warning: not reporting region error due to nll
  --> $DIR/hr-subtype.rs:49:26
   |
LL |               gimme::<$t1>(None::<$t2>);
   |                            ^^^^^^^^^^^
...
LL | / check! { free_x_vs_free_y: (fn(&'x u32),
LL | |                             fn(&'y u32)) }
   | |__________________________________________- in this macro invocation

error: compilation successful
  --> $DIR/hr-subtype.rs:110:1
   |
LL | / fn main() {
LL | | //[bound_a_vs_bound_a]~^ ERROR compilation successful
LL | | //[bound_a_vs_bound_b]~^^ ERROR compilation successful
LL | | //[bound_inv_a_vs_bound_inv_b]~^^^ ERROR compilation successful
LL | | //[bound_co_a_vs_bound_co_b]~^^^^ ERROR compilation successful
LL | | //[free_x_vs_free_x]~^^^^^ ERROR compilation successful
LL | | }
   | |_^

error: aborting due to previous error