code.rs

pub fn init_idt(
) {
    // IDT.load();
}

extern "x86-interrupt" fn breakpoint_handler(
    stack_frame: &mut x86_64::structures::idt::ExceptionStackFrame
) {
    // println!("EXCEPTION: BREAKPOINT\n{:#?}", stack_frame);
}

use x86_64::structures::idt::ExceptionStackFrame;

err.txt

C:\Users\August\code\halt>cargo xbuild --target .\x86_64-os.json
   Compiling halt v0.1.0 (C:\Users\August\code\halt)
error[E0433]: failed to resolve: did you mean `compiler_builtins::x86_64`?
  --> src\interrupts.rs:12:5
   |
12 | use x86_64::structures::idt::ExceptionStackFrame;
   |     ^^^^^^ did you mean `compiler_builtins::x86_64`?

warning: unused import: `x86_64::structures::idt::ExceptionStackFrame`
  --> src\interrupts.rs:12:5
   |
12 | use x86_64::structures::idt::ExceptionStackFrame;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: #[warn(unused_imports)] on by default

error: aborting due to previous error

For more information about this error, try `rustc --explain E0433`.
error: Could not compile `halt`.