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error: expected expression, found keyword `mut`
--> $DIR/issue-103529.rs:5:6
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LL | m! { mut x }
| ^^^ expected expression
error: expected a statement
--> $DIR/issue-103529.rs:5:10
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LL | ($s:stmt) => {}
| ------- while parsing argument for this `stmt` macro fragment
...
LL | m! { mut x }
| ^
error: invalid variable declaration
--> $DIR/issue-103529.rs:8:6
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LL | m! { auto x }
| ^^^^
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help: write `let` instead of `auto` to introduce a new variable
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LL | m! { let x }
| ~~~
error: invalid variable declaration
--> $DIR/issue-103529.rs:10:6
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LL | m! { var x }
| ^^^
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help: write `let` instead of `var` to introduce a new variable
|
LL | m! { let x }
| ~~~
error: aborting due to 4 previous errors
|