error: to use a constant of type `B` in a pattern, `B` must be annotated with `#[derive(PartialEq)]`
  --> $DIR/issue-62307-match-ref-ref-forbidden-without-eq.rs:29:9
   |
LL |         RR_B1 => { println!("CLAIM RR0: {:?} matches {:?}", RR_B1, RR_B0); }
   |         ^^^^^
   |
   = note: the traits must be derived, manual `impl`s are not sufficient
   = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details

error: to use a constant of type `B` in a pattern, `B` must be annotated with `#[derive(PartialEq)]`
  --> $DIR/issue-62307-match-ref-ref-forbidden-without-eq.rs:35:9
   |
LL |         RR_B1 => { println!("CLAIM RR1: {:?} matches {:?}", RR_B1, RR_B1); }
   |         ^^^^^
   |
   = note: the traits must be derived, manual `impl`s are not sufficient
   = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details

error: aborting due to 2 previous errors