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