Cannot compile using nightly because of bug

[vlisivka]

Cannot compile using nightly compiler.

error[E0502]: cannot borrow `*app` as mutable because it is also borrowed as immutable
   --> examples/demo.rs:437:63
    |
434 |                     match app
    |                           --- immutable borrow occurs here
...
437 |                         Some((region, _)) => (region.handler)(app, region.element.clone()),
    |                                                               ^^^  -------------- immutable borrow later used here
    |                                                               |
    |                                                               mutable borrow occurs here

error: aborting due to previous error

Please, specify exact version of nightly compiler, which is testes with libremarkable.

[vlisivka]

Quick fix:

diff --git a/examples/demo.rs b/examples/demo.rs
index 60c6c2a..e7d2127 100644
--- a/examples/demo.rs
+++ b/examples/demo.rs
@@ -431,12 +431,18 @@ fn on_wacom_input(app: &mut appctx::ApplicationContext, input: wacom::WacomEvent
             if !CANVAS_REGION.contains_point(&position.cast().unwrap()) {
                 wacom_stack.clear();
                 if UNPRESS_OBSERVED.fetch_and(false, Ordering::Relaxed) {
-                    match app
-                        .find_active_region(position.y.round() as u16, position.x.round() as u16)
+                    let region = app
+                        .find_active_region(position.y.round() as u16, position.x.round() as u16);
+                    let element = match region
                     {
-                        Some((region, _)) => (region.handler)(app, region.element.clone()),
-                        None => {}
+                        Some((region, _)) => Some(region.element.clone()),
+                        None => None,
+                        
                     };
+                    match element {
+                      Some(element) => (region.unwrap().0.handler)(app, element),
+                      None => {}
+                    }
                 }
                 return;
             }

[canselcik]

Hey,

Thanks for taking care of this. If you would like to create a PR, I would be happy to merge it.

[vlisivka]

See #22