chore: update to Rust 2024 edition

cosmic-applet-status-area/src/components/app.rs

@@ -2,22 +2,19 @@
 // SPDX-License-Identifier: GPL-3.0-only
 
 use cosmic::{
-    app,
+    Element, Task, app,
     applet::cosmic_panel_config::PanelAnchor,
-    applet::token::subscription::{activation_token_subscription, TokenRequest, TokenUpdate},
+    applet::token::subscription::{TokenRequest, TokenUpdate, activation_token_subscription},
     cctk::sctk::reexports::calloop,
     iced::{
-        self,
-        overlay::menu,
+        self, Subscription,
         platform_specific::shell::commands::popup::{destroy_popup, get_popup},
-        window, Limits, Padding, Subscription,
+        window,
     },
     surface,
     widget::{container, mouse_area},
-    Element, Task,
 };
 use std::collections::BTreeMap;
-use zbus::connection::socket::channel;
 
 use crate::{components::status_menu, subscriptions::status_notifier_watcher};
 

cosmic-applet-status-area/src/components/status_menu.rs

@@ -2,14 +2,11 @@
 // SPDX-License-Identifier: GPL-3.0-only
 
 use cosmic::{
-    applet::{
-        menu_button,
-        token::{self, subscription::TokenRequest},
-    },
+    Application,
+    applet::{menu_button, token::subscription::TokenRequest},
     cctk::sctk::reexports::calloop,
     iced,
     widget::icon,
-    Application,
 };
 
 use crate::subscriptions::status_notifier_item::{IconUpdate, Layout, StatusNotifierItem};
@@ -75,7 +72,7 @@ impl State {
                             .map(|mut i| {
                                 if i.width <= 0 || i.height <= 0 || i.bytes.is_empty() {
                                     // App sent invalid icon data during initialization - show placeholder until NewIcon signal
-                                    eprintln!("Skipping invalid icon: {}x{} with {} bytes, app may still be initializing", 
+                                    eprintln!("Skipping invalid icon: {}x{} with {} bytes, app may still be initializing",
                                             i.width, i.height, i.bytes.len());
                                     return icon::from_name("dialog-question").symbolic(true).handle();
                                 }

cosmic-applet-status-area/src/subscriptions/status_notifier_item.rs

@@ -1,10 +1,7 @@
 // Copyright 2023 System76 <info@system76.com>
 // SPDX-License-Identifier: GPL-3.0-only
 
-use cosmic::{
-    iced::{self, Subscription},
-    widget::icon,
-};
+use cosmic::iced::{self, Subscription};
 use futures::{FutureExt, StreamExt};
 use std::collections::HashMap;
 use zbus::zvariant::{self, OwnedValue};
@@ -255,7 +252,7 @@ pub trait DBusMenu {
     ) -> zbus::Result<(u32, Layout)>;
 
     fn event(&self, id: i32, event_id: &str, data: &OwnedValue, timestamp: u32)
-        -> zbus::Result<()>;
+    -> zbus::Result<()>;
 
     fn about_to_show(&self, id: i32) -> zbus::Result<bool>;
 

cosmic-applet-status-area/src/subscriptions/status_notifier_watcher/mod.rs

@@ -4,7 +4,7 @@
 // TODO: Both this and server proxy could emit same events, have way to generate stream from either?
 
 use cosmic::iced::{self, Subscription};
-use futures::{stream, StreamExt};
+use futures::{StreamExt, stream};
 
 use crate::subscriptions::status_notifier_item::StatusNotifierItem;
 

cosmic-applet-status-area/src/subscriptions/status_notifier_watcher/server.rs

@@ -7,11 +7,11 @@
 
 use futures::prelude::*;
 use zbus::{
+    Result,
     fdo::{DBusProxy, RequestNameFlags, RequestNameReply},
     message::Header,
     names::{BusName, UniqueName, WellKnownName},
     object_server::SignalEmitter,
-    Result,
 };
 
 const NAME: WellKnownName =
@@ -65,7 +65,7 @@ impl StatusNotifierWatcher {
 
     #[zbus(signal)]
     async fn status_notifier_item_registered(ctxt: &SignalEmitter<'_>, service: &str)
-        -> Result<()>;
+    -> Result<()>;
 
     #[zbus(signal)]
     async fn status_notifier_item_unregistered(