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error[E0713]: borrow may still be in use when destructor runs
--> $DIR/issue28498-reject-ex1.rs:34:29
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LL | foo.data[0].1.set(Some(&foo.data[1]));
| ^^^^^^^^
...
LL | }
| -
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| here, drop of `foo` needs exclusive access to `foo.data`, because the type `Foo<Concrete<'_>>` implements the `Drop` trait
| borrow might be used here, when `foo` is dropped and runs the `Drop` code for type `Foo`
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= note: consider using a `let` binding to create a longer lived value
error: aborting due to previous error
For more information about this error, try `rustc --explain E0713`.
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