Fix warnings (#2076)

* examples: Fix unused `Result` that must be used when initializing console_log

* examples: Fix unused imports

* Fix unread name field warning in linux x11 ime InputMethod struct

* Fix unread name field warning in linux x11 Device struct

* Ignore unread field warning in macos/ios MonitorHandle struct

* ci: Add `--deny warnings` to `RUSTFLAGS`

.github/workflows/ci.yml

@@ -50,7 +50,7 @@ jobs:
     env:
       RUST_BACKTRACE: 1
       CARGO_INCREMENTAL: 0
-      RUSTFLAGS: "-C debuginfo=0"
+      RUSTFLAGS: "-C debuginfo=0 --deny warnings"
       OPTIONS: ${{ matrix.platform.options }}
       FEATURES: ${{ format(',{0}', matrix.platform.features ) }}
       CMD: ${{ matrix.platform.cmd }}

examples/request_redraw_threaded.rs

@@ -1,3 +1,5 @@
+#[cfg(not(target_arch = "wasm32"))]
+fn main() {
     use std::{thread, time};
 
     use simple_logger::SimpleLogger;
@@ -7,8 +9,6 @@ use winit::{
         window::WindowBuilder,
     };
 
-#[cfg(not(target_arch = "wasm32"))]
-fn main() {
     SimpleLogger::new().init().unwrap();
     let event_loop = EventLoop::new();
 

examples/web.rs

@@ -51,7 +51,7 @@ mod wasm {
 
     #[wasm_bindgen(start)]
     pub fn run() {
-        console_log::init_with_level(log::Level::Debug);
+        console_log::init_with_level(log::Level::Debug).expect("error initializing logger");
 
         super::main();
     }

src/platform_impl/ios/monitor.rs

@@ -168,7 +168,9 @@ impl Drop for MonitorHandle {
 
 impl fmt::Debug for MonitorHandle {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        // TODO: Do this using the proper fmt API
         #[derive(Debug)]
+        #[allow(dead_code)]
         struct MonitorHandle {
             name: Option<String>,
             size: PhysicalSize<u32>,

src/platform_impl/linux/x11/ime/input_method.rs

@@ -42,12 +42,12 @@ unsafe fn open_im(xconn: &Arc<XConnection>, locale_modifiers: &CStr) -> Option<f
 #[derive(Debug)]
 pub struct InputMethod {
     pub im: ffi::XIM,
-    name: String,
+    _name: String,
 }
 
 impl InputMethod {
     fn new(im: ffi::XIM, name: String) -> Self {
-        InputMethod { im, name }
+        InputMethod { im, _name: name }
     }
 }
 

src/platform_impl/linux/x11/mod.rs

@@ -592,7 +592,7 @@ fn mkdid(w: c_int) -> crate::event::DeviceId {
 
 #[derive(Debug)]
 struct Device {
-    name: String,
+    _name: String,
     scroll_axes: Vec<(i32, ScrollAxis)>,
     // For master devices, this is the paired device (pointer <-> keyboard).
     // For slave devices, this is the master.
@@ -658,7 +658,7 @@ impl Device {
         }
 
         let mut device = Device {
-            name: name.into_owned(),
+            _name: name.into_owned(),
             scroll_axes,
             attachment: info.attachment,
         };

src/platform_impl/macos/monitor.rs

@@ -162,6 +162,7 @@ impl fmt::Debug for MonitorHandle {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         // TODO: Do this using the proper fmt API
         #[derive(Debug)]
+        #[allow(dead_code)]
         struct MonitorHandle {
             name: Option<String>,
             native_identifier: u32,