error[E0308]: match arms have incompatible types
  --> $DIR/old-lub-glb-object.rs:12:14
   |
LL |       let z = match 22 {
   |  _____________-
LL | |         0 => x,
   | |              - this is found to be of type `&dyn for<'a, 'b> Foo<&'a u8, &'b u8>`
LL | |         _ => y,
   | |              ^ expected bound lifetime parameter 'a, found concrete lifetime
LL | |     };
   | |_____- `match` arms have incompatible types
   |
   = note: expected type `&dyn for<'a, 'b> Foo<&'a u8, &'b u8>`
              found type `&dyn for<'a> Foo<&'a u8, &'a u8>`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0308`.