warning: unused variable: `old`
--> $DIR/scope_callback_capture.rs:9:29
|
9 | if let Some(old) = inner.take() {
| ^^^ help: if this is intentional, prefix it with an underscore: `_old`
|
= note: `#[warn(unused_variables)]` on by default
error[E0521]: borrowed data escapes outside of closure
--> $DIR/scope_callback_capture.rs:7:17
|
5 | lua.scope(|scope| {
| -----
| |
| `scope` declared here, outside of the closure body
| `scope` is a reference that is only valid in the closure body
6 | let mut inner: Option<Table> = None;
7 | let f = scope
| _________________^
8 | | .create_function_mut(move |_, t: Table| {
9 | | if let Some(old) = inner.take() {
10 | | // Access old callback `Lua`.
... |
13 | | Ok(())
14 | | })?;
| |______________^ `scope` escapes the closure body here