error[E0384]: cannot assign twice to immutable variable `v` --> $DIR/liveness-assign-imm-local-with-init.rs:6:5 | LL | let v: isize = 1; | - | | | first assignment to `v` | help: consider making this binding mutable: `mut v` ... LL | v = 2; | ^^^^^ cannot assign twice to immutable variable error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0384`.