Force the compiler and clippy to return a warning when a function isn't documented

src/main.rs

@@ -1,5 +1,16 @@
+
+#![warn(missing_docs)]
+#![warn(clippy::missing_docs_in_private_items)]
+
+//! Crate burritos ((BurritOS Using Rust Really Improves The Operating System)
+//! 
+//! Burritos is an educational operating system written in Rust
+//! running on RISC-V emulator.
+
+/// Contain hardware simulated part of the machine
 mod simulator;
 mod kernel;
+/// module containing useful tools which can be use in most part of the OS to ease the development of the OS
 pub mod utility;
 
 use kernel::system::System;
@@ -7,5 +18,6 @@ use simulator::machine::Machine;
 
 fn main() {
     let machine = Machine::init_machine();
-    let _system = System::new(machine);
+    let mut system = System::new(machine);
+    system.freeze();
 }