relax and de-clutter let_underscore_must_use

Signed-off-by: Jason Volk <jason@zemos.net>

Cargo.toml

@@ -777,7 +777,6 @@ fn_to_numeric_cast_any = "warn"
 format_push_string = "warn"
 get_unwrap = "warn"
 impl_trait_in_params = "warn"
-let_underscore_must_use = "warn"
 let_underscore_untyped = "warn"
 lossy_float_literal = "warn"
 mem_forget = "warn"

src/admin/mod.rs

@@ -28,7 +28,6 @@ mod_ctor! {}
 mod_dtor! {}
 
 /// Install the admin command handler
-#[allow(clippy::let_underscore_must_use)]
 pub async fn init() {
 	_ = services()
 		.admin
@@ -45,7 +44,6 @@ pub async fn init() {
 }
 
 /// Uninstall the admin command handler
-#[allow(clippy::let_underscore_must_use)]
 pub async fn fini() {
 	_ = services().admin.handle.write().await.take();
 	_ = services()

src/api/client/sync.rs

@@ -307,10 +307,7 @@ pub(crate) async fn sync_events_route(
 			duration = Duration::from_secs(30);
 		}
 
-		#[allow(clippy::let_underscore_must_use)]
-		{
-			_ = tokio::time::timeout(duration, watcher).await;
-		}
+		_ = tokio::time::timeout(duration, watcher).await;
 	}
 
 	Ok(response)
@@ -1567,10 +1564,8 @@ pub(crate) async fn sync_events_v4_route(
 		if duration.as_secs() > 30 {
 			duration = Duration::from_secs(30);
 		}
-		#[allow(clippy::let_underscore_must_use)]
-		{
-			_ = tokio::time::timeout(duration, watcher).await;
-		}
+
+		_ = tokio::time::timeout(duration, watcher).await;
 	}
 
 	Ok(sync_events::v4::Response {

src/router/request.rs

@@ -71,7 +71,6 @@ fn handle_result(
 	}
 }
 
-#[allow(clippy::unnecessary_wraps)]
 fn handle_result_403(
 	_method: &Method, _uri: &Uri, result: &axum::response::Response,
 ) -> Result<axum::response::Response, StatusCode> {

src/router/run.rs

@@ -17,7 +17,6 @@ use crate::{layers, serve};
 
 /// Main loop base
 #[tracing::instrument(skip_all)]
-#[allow(clippy::let_underscore_must_use)] // various of these are intended
 pub(crate) async fn run(server: Arc<Server>) -> Result<(), Error> {
 	let app = layers::build(&server)?;
 

src/router/serve/unix.rs

@@ -54,7 +54,6 @@ pub(super) async fn serve(server: &Arc<Server>, app: Router, mut shutdown: broad
 	Ok(())
 }
 
-#[allow(clippy::let_underscore_must_use)]
 async fn accept(
 	server: &Arc<Server>, listener: &UnixListener, tasks: &mut JoinSet<()>, mut app: MakeService,
 	builder: server::conn::auto::Builder<TokioExecutor>, conn: (UnixStream, SocketAddr),

src/service/admin/console.rs

@@ -45,7 +45,6 @@ impl Console {
 		}
 	}
 
-	#[allow(clippy::let_underscore_must_use)]
 	pub async fn start(self: &Arc<Self>) {
 		let mut worker_join = self.worker_join.lock().expect("locked");
 		if worker_join.is_none() {
@@ -54,7 +53,6 @@ impl Console {
 		}
 	}
 
-	#[allow(clippy::let_underscore_must_use)]
 	pub async fn close(self: &Arc<Self>) {
 		self.interrupt();
 		let Some(worker_join) = self.worker_join.lock().expect("locked").take() else {
@@ -113,7 +111,6 @@ impl Console {
 		self.worker_join.lock().expect("locked").take();
 	}
 
-	#[allow(clippy::let_underscore_must_use)]
 	async fn readline(self: &Arc<Self>) -> Result<ReadlineEvent, ReadlineError> {
 		let _suppression = log::Suppress::new(&services().server);
 
@@ -138,7 +135,6 @@ impl Console {
 		result
 	}
 
-	#[allow(clippy::let_underscore_must_use)]
 	async fn handle(self: Arc<Self>, line: String) {
 		if line.trim().is_empty() {
 			return;

src/service/mod.rs

@@ -37,7 +37,6 @@ conduit::mod_dtor! {}
 
 static SERVICES: RwLock<Option<&Services>> = RwLock::new(None);
 
-#[allow(clippy::let_underscore_must_use)]
 pub async fn init(server: &Arc<Server>) -> Result<()> {
 	let d = Arc::new(Database::open(server).await?);
 	let s = Box::new(Services::build(server.clone(), d)?);

src/service/services.rs

@@ -132,11 +132,7 @@ impl Services {
 
 		if self.globals.allow_check_for_updates() {
 			let handle = globals::updates::start_check_for_updates_task();
-
-			#[allow(clippy::let_underscore_must_use)] // needed for shutdown
-			{
-				_ = self.globals.updates_handle.lock().await.insert(handle);
-			}
+			_ = self.globals.updates_handle.lock().await.insert(handle);
 		}
 
 		debug_info!("Services startup complete.");
@@ -159,11 +155,7 @@ impl Services {
 		debug!("Waiting for update worker...");
 		if let Some(updates_handle) = self.globals.updates_handle.lock().await.take() {
 			updates_handle.abort();
-
-			#[allow(clippy::let_underscore_must_use)]
-			{
-				_ = updates_handle.await;
-			}
+			_ = updates_handle.await;
 		}
 
 		for (name, service) in &self.service {