| error[E0384]: cannot assign twice to immutable variable `x` | |
| --> $DIR/command-line-diagnostics.rs:16:5 | |
| | | |
| 15 | let x = 42; | |
| | - first assignment to `x` | |
| 16 | x = 43; | |
| | ^^^^^^ cannot assign twice to immutable variable | |
| error: aborting due to previous error | |