| error[E0373]: closure may outlive the current function, but it borrows `books`, which is owned by the current function | |
| --> $DIR/borrowck-escaping-closure-error-1.rs:23:11 | |
| | | |
| 23 | spawn(|| books.push(4)); | |
| | ^^ ----- `books` is borrowed here | |
| | | | |
| | may outlive borrowed value `books` | |
| help: to force the closure to take ownership of `books` (and any other referenced variables), use the `move` keyword | |
| | | |
| 23 | spawn(move || books.push(4)); | |
| | ^^^^^^^ | |
| error: aborting due to previous error | |