| error[E0594]: cannot assign to `x`, as it is not declared as mutable | |
| --> $DIR/generator-upvar-mutability.rs:18:9 | |
| | | |
| LL | let x = 0; | |
| | - help: consider changing this to be mutable: `mut x` | |
| LL | move || { | |
| LL | x = 1; | |
| | ^^^^^ cannot assign | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0594`. |