error[E0005]: refutable pattern in local binding --> $DIR/issue-112269.rs:3:9 | LL | const x: i32 = 4; | ------------ missing patterns are not covered because `x` is interpreted as a constant pattern, not a new variable LL | let x: i32 = 3; | ^ patterns `i32::MIN..=3_i32` and `5_i32..=i32::MAX` not covered | = note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant = note: for more information, visit https://doc.rust-lang.org/book/ch19-02-refutability.html = note: the matched value is of type `i32` help: introduce a variable instead | LL | let x_var: i32 = 3; | ++++ error[E0005]: refutable pattern in local binding --> $DIR/issue-112269.rs:7:9 | LL | const y: i32 = 3; | ------------ missing patterns are not covered because `y` is interpreted as a constant pattern, not a new variable LL | let y = 4; | ^ patterns `i32::MIN..=2_i32` and `4_i32..=i32::MAX` not covered | = note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant = note: for more information, visit https://doc.rust-lang.org/book/ch19-02-refutability.html = note: the matched value is of type `i32` help: introduce a variable instead | LL | let y_var = 4; | ++++ error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0005`.