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error[E0507]: cannot move out of `y`, a captured variable in an `Fn` closure
--> $DIR/unboxed-closures-move-upvar-from-non-once-ref-closure.rs:12:9
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LL | let y = vec![format!("World")];
| - captured outer variable
LL | call(|| {
| -- captured by this `Fn` closure
LL | y.into_iter();
| ^ ----------- `y` moved due to this method call
| |
| move occurs because `y` has type `Vec<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
--> $DIR/unboxed-closures-move-upvar-from-non-once-ref-closure.rs:5:28
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LL | fn call<F>(f: F) where F : Fn() {
| ^^^^
note: `into_iter` takes ownership of the receiver `self`, which moves `y`
--> $SRC_DIR/core/src/iter/traits/collect.rs:LL:COL
help: you can `clone` the value and consume it, but this might not be your desired behavior
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LL | <Vec<String> as Clone>::clone(&y).into_iter();
| +++++++++++++++++++++++++++++++ +
help: consider cloning the value if the performance cost is acceptable
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LL | y.clone().into_iter();
| ++++++++
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0507`.
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