rust/tests/ui/writing-to-immutable-vec.st...

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error[E0596]: cannot borrow `v` as mutable, as it is not declared as mutable
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--> $DIR/writing-to-immutable-vec.rs:3:5
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|
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LL | v[1] = 4;
| ^ cannot borrow as mutable
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help: consider changing this to be mutable
|
LL | let mut v: Vec<isize> = vec![1, 2, 3];
| +++
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error: aborting due to 1 previous error
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For more information about this error, try `rustc --explain E0596`.