Cleaned up all of the warnings

src/main.rs

@@ -5,10 +5,8 @@ pub mod upower;
 use std::cell::Cell;
 use std::sync::RwLock;
 use std::{cell::RefCell, rc::Rc, sync::Arc};
-use std::cmp::min;
-use std::os::linux::raw::stat;
 use palette::convert::FromColorUnclamped;
-use palette::{Blend, FromColor, IntoColor, LinSrgba, Mix, Oklab, Oklaba, Packed, Pixel, Shade, Srgb, Srgba};
+use palette::{FromColor, LinSrgba, Mix, Oklaba, Shade, Srgba};
 use wayland_client::{
     protocol::{wl_output::WlOutput, wl_shm, wl_surface::WlSurface},
     Attached, Main,
@@ -32,6 +30,7 @@ pub struct PowerState {
     /// True if line power is available.
     charging: bool,
     /// Time to full charge/empty, in seconds
+    #[allow(unused)] // TODO: actually use this to display the time remaining
     time_remaining: f32,
 }
 
@@ -227,7 +226,7 @@ impl Drop for Surface {
 
 fn main() -> anyhow::Result<()> {
 
-    let mut app_state = AppState::default();
+    let app_state = AppState::default();
 
     // Spawn upower watcher
     let upower_channel = {
@@ -284,7 +283,6 @@ fn main() -> anyhow::Result<()> {
     let mut event_loop = calloop::EventLoop::<()>::try_new().expect("Failed to start event loop");
 
     let surfaces_handle = Rc::clone(&surfaces);
-    let power_state_handle = Arc::clone(&app_state.display_status);
     event_loop.handle().insert_source(
         upower_channel,
         move |_, _, _| {

src/upower.rs

@@ -2,7 +2,6 @@ use std::collections::HashMap;
 use crate::PowerState;
 use std::sync::mpsc::SyncSender;
 use std::sync::{
-    mpsc::{Receiver, Sender},
     Arc, RwLock,
 };
 use upower_dbus;
@@ -17,17 +16,6 @@ pub struct PowerReporter {
     pub status: Arc<RwLock<Option<PowerState>>>,
 }
 
-pub struct PowerReceiver {
-    receiver: Receiver<()>,
-    status: Arc<RwLock<Option<PowerState>>>,
-}
-
-macro_rules! catch {
-    ($expr:block) => {
-        (|| $expr)()
-    };
-}
-
 pub fn spawn_mock(reporter: PowerReporter) -> anyhow::Result<()> {
     std::thread::spawn(move || {
         *reporter.status.write().unwrap() = Some(PowerState{
@@ -54,7 +42,7 @@ pub fn spawn_upower(reporter: PowerReporter) -> anyhow::Result<()> {
     std::thread::spawn(move || {
         let failure = upower_run(reporter, &start_send);
         if failure.is_err() {
-            start_send.send(failure);
+            start_send.send(failure).unwrap();
         }
     });
 
@@ -101,7 +89,7 @@ fn upower_run(
         .cache_properties(zbus::CacheProperties::No)
         .build()?;
 
-    let mut prop_changed_iterator = display_proxy.receive_properties_changed()?;
+    let prop_changed_iterator = display_proxy.receive_properties_changed()?;
 
     let device_interface_name = zbus::names::InterfaceName::from_static_str("org.freedesktop.UPower.Device").unwrap();