totally didn't import an allocator...

kernel/src/main.rs

@@ -1,6 +1,10 @@
 #![no_std]
 #![no_main]
 
+extern crate alloc;
+
+use alloc::vec::Vec;
+
 use foundry_os::{println, println_log};
 
 #[no_mangle]
@@ -40,5 +44,11 @@ unsafe extern "C" fn kmain() -> ! {
     "
     );
 
+    let mut vec = Vec::new();
+    for i in 0..100 {
+        vec.push(i);
+    }
+    println!("{:?}", vec);
+
     loop {}
 }