prefer Display formatting

crates/bevy_animation/src/lib.rs

@@ -1078,8 +1078,8 @@ pub fn animate_targets(
                     (player, graph_handle.id())
                 } else {
                     trace!(
-                        "Either an animation player {:?} or a graph was missing for the target \
-                         entity {:?} ({:?}); no animations will play this frame",
+                        "Either an animation player {} or a graph was missing for the target \
+                         entity {} ({:?}); no animations will play this frame",
                         player_id,
                         entity_mut.id(),
                         entity_mut.get::<Name>(),

crates/bevy_asset/src/io/file/file_watcher.rs

@@ -49,9 +49,9 @@ impl AssetWatcher for FileWatcher {}
 pub(crate) fn get_asset_path(root: &Path, absolute_path: &Path) -> (PathBuf, bool) {
     let relative_path = absolute_path.strip_prefix(root).unwrap_or_else(|_| {
         panic!(
-            "FileWatcher::get_asset_path() failed to strip prefix from absolute path: absolute_path={:?}, root={:?}",
-            absolute_path,
-            root
+            "FileWatcher::get_asset_path() failed to strip prefix from absolute path: absolute_path={}, root={}",
+            absolute_path.display(),
+            root.display()
         )
     });
     let is_meta = relative_path

crates/bevy_asset/src/io/file/mod.rs

@@ -78,8 +78,9 @@ impl FileAssetWriter {
         if create_root {
             if let Err(e) = std::fs::create_dir_all(&root_path) {
                 error!(
-                    "Failed to create root directory {:?} for file asset writer: {:?}",
-                    root_path, e
+                    "Failed to create root directory {} for file asset writer: {}",
+                    root_path.display(),
+                    e
                 );
             }
         }

crates/bevy_asset/src/lib.rs

@@ -1672,9 +1672,9 @@ mod tests {
                                 );
                             }
                         }
-                        _ => panic!("Unexpected error type {:?}", read_error),
+                        _ => panic!("Unexpected error type {}", read_error),
                     },
-                    _ => panic!("Unexpected error type {:?}", error.error),
+                    _ => panic!("Unexpected error type {}", error.error),
                 }
             }
         }

crates/bevy_asset/src/processor/mod.rs

@@ -381,15 +381,18 @@ impl AssetProcessor {
         // Therefore, we shouldn't automatically delete the asset ... that is a
         // user-initiated action.
         debug!(
-            "Meta for asset {:?} was removed. Attempting to re-process",
+            "Meta for asset {} was removed. Attempting to re-process",
             AssetPath::from_path(&path).with_source(source.id())
         );
         self.process_asset(source, path).await;
     }
 
     /// Removes all processed assets stored at the given path (respecting transactionality), then removes the folder itself.
     async fn handle_removed_folder(&self, source: &AssetSource, path: &Path) {
-        debug!("Removing folder {:?} because source was removed", path);
+        debug!(
+            "Removing folder {} because source was removed",
+            path.display()
+        );
         let processed_reader = source.processed_reader().unwrap();
         match processed_reader.read_directory(path).await {
             Ok(mut path_stream) => {
@@ -739,7 +742,7 @@ impl AssetProcessor {
     ) -> Result<ProcessResult, ProcessError> {
         // TODO: The extension check was removed now that AssetPath is the input. is that ok?
         // TODO: check if already processing to protect against duplicate hot-reload events
-        debug!("Processing {:?}", asset_path);
+        debug!("Processing {}", asset_path);
         let server = &self.server;
         let path = asset_path.path();
         let reader = source.reader();
@@ -1237,7 +1240,7 @@ impl ProcessorAssetInfos {
     ) {
         match result {
             Ok(ProcessResult::Processed(processed_info)) => {
-                debug!("Finished processing \"{:?}\"", asset_path);
+                debug!("Finished processing \"{}\"", asset_path);
                 // clean up old dependents
                 let old_processed_info = self
                     .infos
@@ -1260,7 +1263,7 @@ impl ProcessorAssetInfos {
                 }
             }
             Ok(ProcessResult::SkippedNotChanged) => {
-                debug!("Skipping processing (unchanged) \"{:?}\"", asset_path);
+                debug!("Skipping processing (unchanged) \"{}\"", asset_path);
                 let info = self.get_mut(&asset_path).expect("info should exist");
                 // NOTE: skipping an asset on a given pass doesn't mean it won't change in the future as a result
                 // of a dependency being re-processed. This means apps might receive an "old" (but valid) asset first.
@@ -1271,7 +1274,7 @@ impl ProcessorAssetInfos {
                 info.update_status(ProcessStatus::Processed).await;
             }
             Ok(ProcessResult::Ignored) => {
-                debug!("Skipping processing (ignored) \"{:?}\"", asset_path);
+                debug!("Skipping processing (ignored) \"{}\"", asset_path);
             }
             Err(ProcessError::ExtensionRequired) => {
                 // Skip assets without extensions

crates/bevy_asset/src/server/info.rs

@@ -443,7 +443,7 @@ impl AssetInfos {
             } else {
                 // the dependency id does not exist, which implies it was manually removed or never existed in the first place
                 warn!(
-                    "Dependency {:?} from asset {:?} is unknown. This asset's dependency load status will not switch to 'Loaded' until the unknown dependency is loaded.",
+                    "Dependency {} from asset {} is unknown. This asset's dependency load status will not switch to 'Loaded' until the unknown dependency is loaded.",
                     dep_id, loaded_asset_id
                 );
                 true

crates/bevy_asset/src/server/mod.rs

@@ -902,7 +902,7 @@ impl AssetServer {
             .spawn(async move {
                 let Ok(source) = server.get_source(path.source()) else {
                     error!(
-                        "Failed to load {path}. AssetSource {:?} does not exist",
+                        "Failed to load {path}. AssetSource {} does not exist",
                         path.source()
                     );
                     return;
@@ -914,7 +914,7 @@ impl AssetServer {
                         Ok(reader) => reader,
                         Err(_) => {
                             error!(
-                                "Failed to load {path}. AssetSource {:?} does not have a processed AssetReader",
+                                "Failed to load {path}. AssetSource {} does not have a processed AssetReader",
                                 path.source()
                             );
                             return;

crates/bevy_audio/src/audio_output.rs

@@ -130,7 +130,7 @@ pub(crate) fn play_queued_audio_system<Source: Asset + Decodable>(
             // the user may have made a mistake.
             if ear_positions.multiple_listeners() {
                 warn!(
-                    "Multiple SpatialListeners found. Using {:?}.",
+                    "Multiple SpatialListeners found. Using {}.",
                     ear_positions.query.iter().next().unwrap().0
                 );
             }

crates/bevy_color/src/testing.rs

@@ -4,7 +4,7 @@ macro_rules! assert_approx_eq {
         if ($x - $y).abs() >= $d {
             panic!(
                 "assertion failed: `(left !== right)` \
-                 (left: `{:?}`, right: `{:?}`, tolerance: `{:?}`)",
+                 (left: `{}`, right: `{}`, tolerance: `{}`)",
                 $x, $y, $d
             );
         }

crates/bevy_dev_tools/src/ui_debug_overlay/mod.rs

@@ -221,7 +221,7 @@ fn outline_roots(
         {
             let Ok(camera) = cam.cameras.get(camera_entity) else {
                 // The camera wasn't found. Either the Camera don't exist or the Camera is the debug Camera, that we want to skip and warn
-                warn_once!("Camera {:?} wasn't found for debug overlay", camera_entity);
+                warn_once!("Camera {} wasn't found for debug overlay", camera_entity);
                 continue;
             };
             match camera.target {

crates/bevy_ecs/README.md

@@ -80,7 +80,7 @@ struct Position { x: f32, y: f32 }
 
 fn print_position(query: Query<(Entity, &Position)>) {
     for (entity, position) in &query {
-        println!("Entity {:?} is at position: x {}, y {}", entity, position.x, position.y);
+        println!("Entity {} is at position: x {}, y {}", entity, position.x, position.y);
     }
 }
 ```
@@ -172,7 +172,7 @@ struct Player;
 struct Alive;
 
 // Gets the Position component of all Entities with Player component and without the Alive
-// component. 
+// component.
 fn system(query: Query<&Position, (With<Player>, Without<Alive>)>) {
     for position in &query {
     }
@@ -340,7 +340,7 @@ let mut world = World::new();
 let entity = world.spawn_empty().id();
 
 world.add_observer(|trigger: Trigger<Explode>, mut commands: Commands| {
-    println!("Entity {:?} goes BOOM!", trigger.entity());
+    println!("Entity {} goes BOOM!", trigger.entity());
     commands.entity(trigger.entity()).despawn();
 });
 

crates/bevy_ecs/examples/events.rs

@@ -57,7 +57,7 @@ fn sending_system(mut event_writer: EventWriter<MyEvent>) {
 fn receiving_system(mut event_reader: EventReader<MyEvent>) {
     for my_event in event_reader.read() {
         println!(
-            "    Received message {:?}, with random value of {}",
+            "    Received message {}, with random value of {}",
             my_event.message, my_event.random_value
         );
     }

crates/bevy_ecs/src/component.rs

@@ -487,7 +487,7 @@ impl ComponentHooks {
     /// Will panic if the component already has an `on_add` hook
     pub fn on_add(&mut self, hook: ComponentHook) -> &mut Self {
         self.try_on_add(hook)
-            .expect("Component id: {:?}, already has an on_add hook")
+            .expect("Component id: {}, already has an on_add hook")
     }
 
     /// Register a [`ComponentHook`] that will be run when this component is added (with `.insert`)
@@ -505,7 +505,7 @@ impl ComponentHooks {
     /// Will panic if the component already has an `on_insert` hook
     pub fn on_insert(&mut self, hook: ComponentHook) -> &mut Self {
         self.try_on_insert(hook)
-            .expect("Component id: {:?}, already has an on_insert hook")
+            .expect("Component id: {}, already has an on_insert hook")
     }
 
     /// Register a [`ComponentHook`] that will be run when this component is about to be dropped,
@@ -527,7 +527,7 @@ impl ComponentHooks {
     /// Will panic if the component already has an `on_replace` hook
     pub fn on_replace(&mut self, hook: ComponentHook) -> &mut Self {
         self.try_on_replace(hook)
-            .expect("Component id: {:?}, already has an on_replace hook")
+            .expect("Component id: {}, already has an on_replace hook")
     }
 
     /// Register a [`ComponentHook`] that will be run when this component is removed from an entity.
@@ -538,7 +538,7 @@ impl ComponentHooks {
     /// Will panic if the component already has an `on_remove` hook
     pub fn on_remove(&mut self, hook: ComponentHook) -> &mut Self {
         self.try_on_remove(hook)
-            .expect("Component id: {:?}, already has an on_remove hook")
+            .expect("Component id: {}, already has an on_remove hook")
     }
 
     /// Attempt to register a [`ComponentHook`] that will be run when this component is added to an entity.

crates/bevy_ecs/src/observer/runner.rs

@@ -196,7 +196,7 @@ pub type ObserverRunner = fn(DeferredWorld, ObserverTrigger, PtrMut, propagate:
 /// struct Explode;
 ///
 /// world.add_observer(|trigger: Trigger<Explode>, mut commands: Commands| {
-///     println!("Entity {:?} goes BOOM!", trigger.entity());
+///     println!("Entity {} goes BOOM!", trigger.entity());
 ///     commands.entity(trigger.entity()).despawn();
 /// });
 ///

crates/bevy_ecs/src/query/filter.rs

@@ -356,7 +356,7 @@ unsafe impl<T: Component> QueryFilter for Without<T> {
 /// #
 /// fn print_cool_entity_system(query: Query<Entity, Or<(Changed<Color>, Changed<Node>)>>) {
 ///     for entity in &query {
-///         println!("Entity {:?} got a new style or color", entity);
+///         println!("Entity {} got a new style or color", entity);
 ///     }
 /// }
 /// # bevy_ecs::system::assert_is_system(print_cool_entity_system);

crates/bevy_ecs/src/removal_detection.rs

@@ -134,7 +134,7 @@ impl RemovedComponentEvents {
 /// # #[derive(Component)]
 /// # struct MyComponent;
 /// fn react_on_removal(mut removed: RemovedComponents<MyComponent>) {
-///     removed.read().for_each(|removed_entity| println!("{:?}", removed_entity));
+///     removed.read().for_each(|removed_entity| println!("{}", removed_entity));
 /// }
 /// # bevy_ecs::system::assert_is_system(react_on_removal);
 /// ```

crates/bevy_ecs/src/system/commands/mod.rs

@@ -1567,7 +1567,7 @@ impl<'a> EntityCommands<'a> {
     ///     .spawn_empty()
     ///     // Closures with this signature implement `EntityCommand`.
     ///     .queue(|entity: EntityWorldMut| {
-    ///         println!("Executed an EntityCommand for {:?}", entity.id());
+    ///         println!("Executed an EntityCommand for {}", entity.id());
     ///     });
     /// # }
     /// # bevy_ecs::system::assert_is_system(my_system);
@@ -1967,7 +1967,7 @@ fn insert<T: Bundle>(bundle: T, mode: InsertMode) -> impl EntityCommand {
                 caller,
             );
         } else {
-            panic!("error[B0003]: {caller}: Could not insert a bundle (of type `{}`) for entity {:?} because it doesn't exist in this World. See: https://bevyengine.org/learn/errors/b0003", core::any::type_name::<T>(), entity);
+            panic!("error[B0003]: {caller}: Could not insert a bundle (of type `{}`) for entity {} because it doesn't exist in this World. See: https://bevyengine.org/learn/errors/b0003", core::any::type_name::<T>(), entity);
         }
     }
 }
@@ -1986,7 +1986,7 @@ fn insert_from_world<T: Component + FromWorld>(mode: InsertMode) -> impl EntityC
                 caller,
             );
         } else {
-            panic!("error[B0003]: {caller}: Could not insert a bundle (of type `{}`) for entity {:?} because it doesn't exist in this World. See: https://bevyengine.org/learn/errors/b0003", core::any::type_name::<T>(), entity);
+            panic!("error[B0003]: {caller}: Could not insert a bundle (of type `{}`) for entity {} because it doesn't exist in this World. See: https://bevyengine.org/learn/errors/b0003", core::any::type_name::<T>(), entity);
         }
     }
 }

crates/bevy_ecs/src/system/mod.rs

@@ -1642,7 +1642,13 @@ mod tests {
         assert_is_system(returning::<Option<()>>.map(drop));
         assert_is_system(returning::<&str>.map(u64::from_str).map(Result::unwrap));
         assert_is_system(static_system_param);
-        assert_is_system(exclusive_in_out::<(), Result<(), std::io::Error>>.map(bevy_utils::error));
+        assert_is_system(
+            exclusive_in_out::<(), Result<(), std::io::Error>>.map(|system| {
+                if let Err(err) = system {
+                    bevy_utils::tracing::error!("{err}");
+                }
+            }),
+        );
         assert_is_system(exclusive_with_state);
         assert_is_system(returning::<bool>.pipe(exclusive_in_out::<bool, ()>));
 

crates/bevy_ecs/src/system/query.rs

@@ -618,7 +618,7 @@ impl<'w, 's, D: QueryData, F: QueryFilter> Query<'w, 's, D, F> {
     /// ) {
     ///     for friends in &friends_query {
     ///         for counter in counter_query.iter_many(&friends.list) {
-    ///             println!("Friend's counter: {:?}", counter.value);
+    ///             println!("Friend's counter: {}", counter.value);
     ///         }
     ///     }
     /// }
@@ -672,7 +672,7 @@ impl<'w, 's, D: QueryData, F: QueryFilter> Query<'w, 's, D, F> {
     ///     for friends in &friends_query {
     ///         let mut iter = counter_query.iter_many_mut(&friends.list);
     ///         while let Some(mut counter) = iter.fetch_next() {
-    ///             println!("Friend's counter: {:?}", counter.value);
+    ///             println!("Friend's counter: {}", counter.value);
     ///             counter.value += 1;
     ///         }
     ///     }

crates/bevy_ecs/src/world/mod.rs

@@ -1529,7 +1529,7 @@ impl World {
             true
         } else {
             if log_warning {
-                warn!("error[B0003]: {caller}: Could not despawn entity {:?} because it doesn't exist in this World. See: https://bevyengine.org/learn/errors/b0003", entity);
+                warn!("error[B0003]: {caller}: Could not despawn entity {} because it doesn't exist in this World. See: https://bevyengine.org/learn/errors/b0003", entity);
             }
             false
         }
@@ -2613,11 +2613,11 @@ impl World {
                             )
                         };
                     } else {
-                        panic!("error[B0003]: Could not insert a bundle (of type `{}`) for entity {:?} because it doesn't exist in this World. See: https://bevyengine.org/learn/errors/b0003", core::any::type_name::<B>(), entity);
+                        panic!("error[B0003]: Could not insert a bundle (of type `{}`) for entity {} because it doesn't exist in this World. See: https://bevyengine.org/learn/errors/b0003", core::any::type_name::<B>(), entity);
                     }
                 }
             } else {
-                panic!("error[B0003]: Could not insert a bundle (of type `{}`) for entity {:?} because it doesn't exist in this World. See: https://bevyengine.org/learn/errors/b0003", core::any::type_name::<B>(), first_entity);
+                panic!("error[B0003]: Could not insert a bundle (of type `{}`) for entity {} because it doesn't exist in this World. See: https://bevyengine.org/learn/errors/b0003", core::any::type_name::<B>(), first_entity);
             }
         }
     }

crates/bevy_gltf/src/loader.rs

@@ -608,13 +608,13 @@ async fn load_gltf<'a, 'b, 'c>(
                 if [Semantic::Joints(0), Semantic::Weights(0)].contains(&semantic) {
                     if !meshes_on_skinned_nodes.contains(&gltf_mesh.index()) {
                         warn!(
-                        "Ignoring attribute {:?} for skinned mesh {:?} used on non skinned nodes (NODE_SKINNED_MESH_WITHOUT_SKIN)",
+                        "Ignoring attribute {:?} for skinned mesh {} used on non skinned nodes (NODE_SKINNED_MESH_WITHOUT_SKIN)",
                         semantic,
                         primitive_label
                     );
                         continue;
                     } else if meshes_on_non_skinned_nodes.contains(&gltf_mesh.index()) {
-                        error!("Skinned mesh {:?} used on both skinned and non skin nodes, this is likely to cause an error (NODE_SKINNED_MESH_WITHOUT_SKIN)", primitive_label);
+                        error!("Skinned mesh {} used on both skinned and non skin nodes, this is likely to cause an error (NODE_SKINNED_MESH_WITHOUT_SKIN)", primitive_label);
                     }
                 }
                 match convert_attribute(
@@ -699,9 +699,9 @@ async fn load_gltf<'a, 'b, 'c>(
                 generate_tangents_span.in_scope(|| {
                     if let Err(err) = mesh.generate_tangents() {
                         warn!(
-                        "Failed to generate vertex tangents using the mikktspace algorithm: {:?}",
-                        err
-                    );
+                            "Failed to generate vertex tangents using the mikktspace algorithm: {}",
+                            err
+                        );
                     }
                 });
             }
@@ -1874,7 +1874,7 @@ impl<'a> GltfTreeIterator<'a> {
                 if skin.joints().len() > MAX_JOINTS && warned_about_max_joints.insert(skin.index())
                 {
                     warn!(
-                        "The glTF skin {:?} has {} joints, but the maximum supported is {}",
+                        "The glTF skin {} has {} joints, but the maximum supported is {}",
                         skin.name()
                             .map(ToString::to_string)
                             .unwrap_or_else(|| skin.index().to_string()),

crates/bevy_hierarchy/src/hierarchy.rs

@@ -47,10 +47,10 @@ fn despawn_with_children_recursive_inner(world: &mut World, entity: Entity, warn
 
     if warn {
         if !world.despawn(entity) {
-            debug!("Failed to despawn entity {:?}", entity);
+            debug!("Failed to despawn entity {}", entity);
         }
     } else if !world.try_despawn(entity) {
-        debug!("Failed to despawn entity {:?}", entity);
+        debug!("Failed to despawn entity {}", entity);
     }
 }