Fix clippy errors

libk/src/lib.rs

@@ -1,7 +1,16 @@
 #![no_std]
 #![allow(async_fn_in_trait)]
 #![warn(tail_expr_drop_order)]
-#![warn(clippy::correctness, clippy::perf, clippy::nursery)]
+#![warn(
+    clippy::correctness,
+    clippy::nursery,
+    clippy::unnecessary_cast,
+    clippy::all,
+    clippy::suspicious,
+    clippy::perf,
+    rustdoc::missing_errors_doc,
+    rustdoc::missing_panics_doc
+)]
 // alloc
 // io : serial, framebuffer, ascii(?), keyboard
 // ?????
@@ -11,6 +20,8 @@ extern crate alloc;
 
 pub mod drivers;
 pub mod resources;
+
+#[allow(unused)] // We aren't using much of this right now.
 pub mod std;
 
 /// Re-exports most of the IO macros as well as standard allocation stuff