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warning: value assigned to `x` is never read
--> $DIR/issue-11958.rs:8:36
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LL | let _thunk = Box::new(move|| { x = 2; });
| ^
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= note: `#[warn(unused_assignments)]` on by default
= help: maybe it is overwritten before being read?
warning: unused variable: `x`
--> $DIR/issue-11958.rs:8:36
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LL | let _thunk = Box::new(move|| { x = 2; });
| ^
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= note: `#[warn(unused_variables)]` on by default
= help: did you mean to capture by reference instead?
warning: 2 warnings emitted
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