error[E0435]: attempt to use a non-constant value in a constant --> $DIR/non-const-value-in-const.rs:3:20 | LL | const Y: i32 = x; | ------- ^ non-constant value | | | help: consider using `let` instead of `const`: `let Y` error[E0435]: attempt to use a non-constant value in a constant --> $DIR/non-const-value-in-const.rs:6:17 | LL | let x = 5; | ----- help: consider using `const` instead of `let`: `const x` ... LL | let _ = [0; x]; | ^ non-constant value error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0435`.