warning: unused generator that must be used
  --> $DIR/match-bindings.rs:12:5
   |
LL | /     || {
LL | |         loop {
LL | |             if let true = true {
LL | |                 match Enum::A(String::new()) {
...  |
LL | |         }
LL | |     };
   | |______^
   |
   = note: `#[warn(unused_must_use)]` on by default
   = note: generators are lazy and do nothing unless resumed

warning: 1 warning emitted