rust/tests/ui/lifetimes/unnamed-closure-doesnt-life-long-enough-issue-67634.stderr
2023-01-11 09:32:08 +00:00

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error[E0373]: closure may outlive the current function, but it borrows `a`, which is owned by the current function
--> $DIR/unnamed-closure-doesnt-life-long-enough-issue-67634.rs:2:44
|
LL | [0].iter().flat_map(|a| [0].iter().map(|_| &a));
| ^^^ - `a` is borrowed here
| |
| may outlive borrowed value `a`
|
note: closure is returned here
--> $DIR/unnamed-closure-doesnt-life-long-enough-issue-67634.rs:2:29
|
LL | [0].iter().flat_map(|a| [0].iter().map(|_| &a));
| ^^^^^^^^^^^^^^^^^^^^^^
help: to force the closure to take ownership of `a` (and any other referenced variables), use the `move` keyword
|
LL | [0].iter().flat_map(|a| [0].iter().map(move |_| &a));
| ++++
error: aborting due to previous error
For more information about this error, try `rustc --explain E0373`.