fix: let_underscore_drop

Author: mkroening

Cargo.toml

@@ -394,6 +394,7 @@ exclude = [
 
 [workspace.lints.rust]
 # Lint groups
+let_underscore = "warn"
 rust_2018_idioms = "warn"
 
 # Lints

src/executor/vsock.rs

@@ -207,7 +207,7 @@ impl VsockMap {
 	}
 
 	pub fn remove_socket(&mut self, port: u32) {
-		let _ = self.port_map.remove(&port);
+		self.port_map.remove(&port);
 	}
 }
 

src/fs/mod.rs

@@ -612,6 +612,8 @@ impl Write for File {
 
 impl Drop for File {
 	fn drop(&mut self) {
-		let _ = remove_object(self.fd);
+		if let Err(err) = remove_object(self.fd) {
+			error!("File::drop failed: {err}");
+		}
 	}
 }

src/scheduler/mod.rs

@@ -512,7 +512,7 @@ impl PerCoreScheduler {
 			};
 
 			let fd = new_fd()?;
-			let _ = object_map.insert(fd, obj.clone());
+			object_map.insert(fd, obj.clone());
 			Ok(fd)
 		})
 	}