rust/tests/ui/unboxed-closures/unboxed-closures-infer-fnmut-missing-mut.stderr

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error[E0596]: cannot borrow `tick` as mutable, as it is not declared as mutable
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--> $DIR/unboxed-closures-infer-fnmut-missing-mut.rs:7:5
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|
LL | let tick = || counter += 1;
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| ------- calling `tick` requires mutable binding due to mutable borrow of `counter`
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LL | tick();
| ^^^^ cannot borrow as mutable
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|
help: consider changing this to be mutable
|
LL | let mut tick = || counter += 1;
| +++
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error: aborting due to previous error
For more information about this error, try `rustc --explain E0596`.