#![no_main]#![no_std]extern crate lm3s6965;extern crate panic_halt;extern crate rtfm;use rtfm::app;#[app(device = lm3s6965)]const APP: () = {#[init]fninit(_: init::Context) {}#[exception]fnSysTick(_: SysTick::Context) {//~^ ERROR the `SysTick` exception can't be used because it's used by the runtime}};