src/test/ui/lifetimes/unnamed-closure-doesnt-life-long-enough-issue-67634.stderr

   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
   3    |
   4 LL |     [0].iter().flat_map(|a| [0].iter().map(|_| &a));
   5    |                                            ^^^  - `a` is borrowed here
   6    |                                            |
   7    |                                            may outlive borrowed value `a`
   8    |
   9 note: closure is returned here
  10   --> $DIR/unnamed-closure-doesnt-life-long-enough-issue-67634.rs:2:29
  11    |
  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
  15    |
  16 LL |     [0].iter().flat_map(|a| [0].iter().map(move |_| &a));
  17    |                                            ++++
  18
  19 error: aborting due to previous error
  20
  21 For more information about this error, try `rustc --explain E0373`.