use built-in 'assert'

crates/fj-kernel/src/partial/merge.rs

@@ -46,9 +46,10 @@ where
         }
 
         // We know that `self != other`, or we wouldn't have made it here.
-        if self.is_some() && other.is_some() {
+        assert!(
-            panic!("Can't merge two `Option`s that are both `Some`")
+            self.is_none() || other.is_none(),
-        }
+            "Can't merge two `Option`s that are both `Some`"
+        );
 
         self.xor(other)
     }

crates/fj-kernel/src/storage/blocks.rs

@@ -94,9 +94,7 @@ impl<T> Block<T> {
     pub fn insert(&mut self, index: ObjectIndex, object: T) {
         let slot = &mut self.objects[index.0];
 
-        if slot.is_some() {
+        assert!(slot.is_none(), "Attempting to overwrite object in store");
-            panic!("Attempting to overwrite object in store")
-        }
 
         *slot = Some(object);
     }

crates/fj-math/src/line.rs

@@ -21,9 +21,10 @@ impl<const D: usize> Line<D> {
         origin: Point<D>,
         direction: Vector<D>,
     ) -> Self {
-        if direction.magnitude() == Scalar::ZERO {
+        assert!(
-            panic!("Can't construct `Line`. Direction is zero: {direction:?}");
+            direction.magnitude() != Scalar::ZERO,
-        }
+            "Can't construct `Line`. Direction is zero: {direction:?}"
+        );
 
         Self { origin, direction }
     }

crates/fj-window/src/event_loop_handler.rs

@@ -45,9 +45,10 @@ impl EventLoopHandler {
                 let event = events
                     .try_recv()
                     .map_err(|err| {
-                        if err.is_disconnected() {
+                        assert!(
-                            panic!("Expected channel to never disconnect");
+                            !err.is_disconnected(),
-                        }
+                            "Expected channel to never disconnect"
+                        );
                     })
                     .ok();
 

tools/autolib/src/lib.rs

@@ -9,7 +9,7 @@ pub fn find_version_in_str(s: &str) -> anyhow::Result<Option<semver::Version>> {
                 version.as_str(),
             );
         })
-        .filter_map(|m| {
+        .find_map(|m| {
             let version = semver::Version::parse(m.as_str()).ok();
 
             if version.is_some() {
@@ -19,8 +19,7 @@ pub fn find_version_in_str(s: &str) -> anyhow::Result<Option<semver::Version>> {
             }
 
             version
-        })
+        });
-        .next();
 
     Ok(version)
 }