| error[E0521]: borrowed data escapes outside of closure |
| --> $DIR/issue-7573.rs:17:9 |
| | |
| LL | let mut lines_to_use: Vec<&CrateId> = Vec::new(); |
| | ---------------- `lines_to_use` declared here, outside of the closure body |
| LL | |
| LL | let push_id = |installed_id: &CrateId| { |
| | ------------ `installed_id` is a reference that is only valid in the closure body |
| LL | |
| LL | lines_to_use.push(installed_id); |
| | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `installed_id` escapes the closure body here |
| | |
| = note: requirement occurs because of a mutable reference to `Vec<&CrateId>` |
| = note: mutable references are invariant over their type parameter |
| = help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance |
| |
| error: aborting due to 1 previous error |
| |
| For more information about this error, try `rustc --explain E0521`. |
