rust/tests/ui/lint/unused/unused-mut-warning-captured-var.rs

//@ run-rustfix

#![forbid(unused_mut)]

fn main() {
    let mut x = 1;
    //~^ ERROR: variable does not need to be mutable
    (move|| { println!("{}", x); })();
}
Audit uses of `span_suggestion_short` 2020-07-02 14:32:12 +09:00			`//@ run-rustfix`

Add tests. 2014-08-04 13:30:38 -07:00			`#![forbid(unused_mut)]`

			`fn main() {`
Kill more `isize`s 2015-01-31 17:23:42 +01:00			`let mut x = 1;`
Add tests. 2014-08-04 13:30:38 -07:00			`//~^ ERROR: variable does not need to be mutable`
Make closures and generators a must use types Warn about unused expressions with closure or generator type. This follows existing precedence of must use annotations present on `FnOnce`, `FnMut`, `Fn` traits, which already indirectly apply to closures in some cases, e.g.,: ```rust fn f() -> impl FnOnce() { \|\| {} } fn main() { // an existing warning: unused implementer of `std::ops::FnOnce` that must be used: f(); // a new warning: unused closure that must be used: \|\| {}; } ``` 2020-07-28 00:00:00 +00:00			`(move\|\| { println!("{}", x); })();`
Add tests. 2014-08-04 13:30:38 -07:00			`}`