Update boot prints to be a little less noisy.

TODO:

* Debugging, tracing support.
* Logging infra so we can may pass a loglevel like on Linux.

kernel/src/lib.rs

@@ -1,6 +1,5 @@
 #![no_std]
 #![feature(abi_x86_interrupt)]
-#![feature(impl_trait_in_bindings)]
 #![warn(
     clippy::correctness,
     clippy::nursery,
@@ -20,6 +19,7 @@ use crate::{
         drivers::{
             ascii::screensize_chars, framebuffer::display::screensize_px,
         },
+        gdt, interrupts,
         memory::{
             FRAME_ALLOCATOR,
             allocation::{
@@ -35,7 +35,7 @@ use crate::{
 use alloc::{boxed::Box, format};
 use core::arch::asm;
 use limine::BaseRevision;
-use std::unwind::UNWINDER;
+use std::{debug, unwind::UNWINDER};
 use x86_64::VirtAddr;
 
 pub mod arch;
@@ -88,8 +88,6 @@ pub fn boot() -> Result<(), Box<dyn core::error::Error>> {
         return Err("Base revision not supported.".into());
     }
 
-    use arch::x86_64::{gdt, interrupts};
-
     let memory_map = mapping::get_memory_map();
 
     print_log!("    Initialising Serial... ");
@@ -101,12 +99,11 @@ pub fn boot() -> Result<(), Box<dyn core::error::Error>> {
         debugln!("[Success]");
     }
 
-    debugln!("    Display...");
-    let dimensions = screensize_chars();
-    let dimensions2 = screensize_px();
-    debugln!("      => (px)    : {}x{} ", dimensions2.0, dimensions2.1);
-    debugln!("      => (chars) : {}x{} ", dimensions.0, dimensions.1);
-    debugln!("    [Success]");
+    debugln!(
+        "Display is {:?} chars, {:?} px.",
+        screensize_chars(),
+        screensize_px()
+    );
 
     debug!("    Setting Up Global Descriptor Table... ");
     gdt::init();
@@ -152,9 +149,11 @@ pub fn boot() -> Result<(), Box<dyn core::error::Error>> {
     x86_64::instructions::interrupts::enable();
     debugln!("[Success]");
 
-    // Initialises the Unwinder once and only once because this makes a heap
-    // allocation.
+    // Initialises the stack unwinder once and only once because this makes a
+    // heap allocation.
+    debug!("    Initializing Stack Unwinder... ");
     UNWINDER.lock();
+    debugln!("[Success]");
 
     Ok(())
 }