1 error[E0384]: cannot assign twice to immutable variable `x`
2 --> $DIR/command-line-diagnostics.rs:6:5
7 | first assignment to `x`
8 | help: consider making this binding mutable: `mut x`
10 | ^^^^^^ cannot assign twice to immutable variable
12 error: aborting due to previous error
14 For more information about this error, try `rustc --explain E0384`.