src/test/ui/issues/issue-29861.stderr

   1 error[E0207]: the lifetime parameter `'a` is not constrained by the impl trait, self type, or predicates
   2   --> $DIR/issue-29861.rs:11:6
   3    |
   4 LL | impl<'a, T: 'a> MakeRef2 for T {
   5    |      ^^ unconstrained lifetime parameter
   6
   7 error: aborting due to previous error
   8
   9 For more information about this error, try `rustc --explain E0207`.