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30 lines
1.1 KiB
Plaintext
30 lines
1.1 KiB
Plaintext
error[E0507]: cannot move out of `val`, a captured variable in an `FnMut` closure
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--> $DIR/issue-87456-point-to-closure.rs:10:28
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LL | let val = String::new();
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| --- captured outer variable
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LL |
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LL | take_mut(|| {
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| -- captured by this `FnMut` closure
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LL |
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LL | let _foo: String = val;
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| ^^^ move occurs because `val` has type `String`, which does not implement the `Copy` trait
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help: `Fn` and `FnMut` closures require captured values to be able to be consumed multiple times, but `FnOnce` closures may consume them only once
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--> $DIR/issue-87456-point-to-closure.rs:3:24
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LL | fn take_mut(_val: impl FnMut()) {}
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| ^^^^^^^
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help: consider borrowing here
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LL | let _foo: String = &val;
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| +
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help: consider cloning the value if the performance cost is acceptable
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LL | let _foo: String = val.clone();
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| ++++++++
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error: aborting due to 1 previous error
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For more information about this error, try `rustc --explain E0507`.
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