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error: variable does not need to be mutable
--> $DIR/capture-mut-ref.rs:9:9
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LL | let mut x = &mut 0;
| ----^
| |
| help: remove this `mut`
|
note: the lint level is defined here
--> $DIR/capture-mut-ref.rs:6:9
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LL | #![deny(unused_mut)]
| ^^^^^^^^^^
error: aborting due to 1 previous error
|
