#![no_main]#![no_std]externcratelm3s6965;externcratepanic_halt;externcratertfm;usertfm::app;#[app(device = lm3s6965)]constAPP: ()={#[init]fninit(_: init::Context){}#[idle]fnidle(_: idle::Context){//~^ ERROR `idle` must have type signature `fn(idle::Context) -> !`}};