warning: variant `B` is never constructed
  --> $DIR/issue-87097.rs:6:5
   |
LL | enum Variant {
   |      ------- variant in this enum
LL |     A,
LL |     B,
   |     ^
   |
   = note: `#[warn(dead_code)]` on by default

warning: unused closure that must be used
  --> $DIR/issue-87097.rs:17:5
   |
LL | /     || match out_ref {
LL | |         Variant::A => (),
LL | |         Variant::B => (),
LL | |     };
   | |_____^
   |
   = note: closures are lazy and do nothing unless called
   = note: `#[warn(unused_must_use)]` on by default

warning: unused closure that must be used
  --> $DIR/issue-87097.rs:26:5
   |
LL | /     || match here.field {
LL | |         Variant::A => (),
LL | |         Variant::B => (),
LL | |     };
   | |_____^
   |
   = note: closures are lazy and do nothing unless called

warning: 3 warnings emitted