1 error[E0373]: closure may outlive the current function, but it borrows `a`, which is owned by the current function
2 --> $DIR/unnamed-closure-doesnt-life-long-enough-issue-67634.rs:2:44
4 LL | [0].iter().flat_map(|a| [0].iter().map(|_| &a));
5 | ^^^ - `a` is borrowed here
7 | may outlive borrowed value `a`
9 note: closure is returned here
10 --> $DIR/unnamed-closure-doesnt-life-long-enough-issue-67634.rs:2:29
12 LL | [0].iter().flat_map(|a| [0].iter().map(|_| &a));
13 | ^^^^^^^^^^^^^^^^^^^^^^
14 help: to force the closure to take ownership of `a` (and any other referenced variables), use the `move` keyword
16 LL | [0].iter().flat_map(|a| [0].iter().map(move |_| &a));
19 error: aborting due to previous error
21 For more information about this error, try `rustc --explain E0373`.