error: irrefutable if-let pattern
  --> $DIR/deny-irrefutable-let-patterns.rs:4:5
   |
LL |     if let _ = 5 {}
   |     ^^^^^^^^^^^^^^^
   |
note: the lint level is defined here
  --> $DIR/deny-irrefutable-let-patterns.rs:1:9
   |
LL | #![deny(irrefutable_let_patterns)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^

error: irrefutable while-let pattern
  --> $DIR/deny-irrefutable-let-patterns.rs:6:5
   |
LL | /     while let _ = 5 {
LL | |         break;
LL | |     }
   | |_____^

error: aborting due to 2 previous errors