error[E0005]: refutable pattern in local binding --> $DIR/const-pattern-irrefutable.rs:12:9 | LL | const a: u8 = 2; | ----------- constant defined here ... LL | let a = 4; | ^ | | | patterns `0_u8..=1_u8` and `3_u8..=u8::MAX` not covered | missing patterns are not covered because `a` is interpreted as a constant pattern, not a new variable | help: introduce a variable instead: `a_var` | = note: the matched value is of type `u8` error[E0005]: refutable pattern in local binding --> $DIR/const-pattern-irrefutable.rs:17:9 | LL | pub const b: u8 = 2; | --------------- constant defined here ... LL | let c = 4; | ^ | | | patterns `0_u8..=1_u8` and `3_u8..=u8::MAX` not covered | missing patterns are not covered because `c` is interpreted as a constant pattern, not a new variable | help: introduce a variable instead: `c_var` | = note: the matched value is of type `u8` error[E0005]: refutable pattern in local binding --> $DIR/const-pattern-irrefutable.rs:22:9 | LL | pub const d: u8 = 2; | --------------- constant defined here ... LL | let d = 4; | ^ | | | patterns `0_u8..=1_u8` and `3_u8..=u8::MAX` not covered | missing patterns are not covered because `d` is interpreted as a constant pattern, not a new variable | help: introduce a variable instead: `d_var` | = note: the matched value is of type `u8` error: aborting due to 3 previous errors For more information about this error, try `rustc --explain E0005`.