Run clippy

src/io/scheduler.rs

@@ -1,6 +1,6 @@
 use std::collections::{HashMap, HashSet};
 
-use log::{info, warn};
+use log::{info};
 use std::sync::mpsc::{channel, Receiver, SendError, Sender};
 use std::sync::{Arc, Mutex};
 
@@ -75,7 +75,7 @@ impl ThreadLocalTessellatorState {
         request_id: TileRequestID,
         data: Box<[u8]>,
     ) -> Result<(), SendError<TileTessellateResult>> {
-        if let Ok(mut tile_request_state) = self.tile_request_state.lock() {
+        if let Ok(tile_request_state) = self.tile_request_state.lock() {
             if let Some(tile_request) = tile_request_state.get_tile_request(request_id) {
                 self.tessellate_layers_with_request(
                     TileFetchResult::Tile {

src/io/tile_cache.rs

@@ -1,7 +1,7 @@
 use crate::coords::WorldTileCoords;
 use crate::io::LayerResult;
 use std::collections::{btree_map, BTreeMap, HashSet};
-use std::sync::{Arc, Mutex};
+
 
 pub struct TileCache {
     index: BTreeMap<WorldTileCoords, Vec<LayerResult>>,

src/main_loop.rs

@@ -3,7 +3,7 @@
 //! * Platform Events like suspend/resume
 //! * Render a new frame
 
-use log::{error, info, trace};
+use log::{error, trace};
 use style_spec::Style;
 use winit::event::{ElementState, Event, KeyboardInput, VirtualKeyCode, WindowEvent};
 use winit::event_loop::{ControlFlow, EventLoop};

src/render/buffer_pool.rs

@@ -512,7 +512,7 @@ mod tests {
         pool.allocate_tile_geometry(
             &queue,
             (0, 0, 0).into(),
-            style_layer.clone(),
+            style_layer,
             &data24bytes_aligned,
             2,
             &vec![],

src/render/render_state.rs

@@ -364,9 +364,7 @@ impl RenderState {
             let source_layers: HashSet<String> = self
                 .style
                 .layers
-                .iter()
+                .iter().filter_map(|layer| layer.source_layer.as_ref())
-                .map(|layer| layer.source_layer.as_ref())
-                .filter_map(|x| x)
                 .cloned()
                 .collect();
 
@@ -459,7 +457,7 @@ impl RenderState {
                                     &self.queue,
                                     *coords,
                                     style_layer.clone(),
-                                    &buffer,
+                                    buffer,
                                     ShaderTileMetadata::new(transform.into()),
                                     &feature_metadata,
                                 );