safer interruptability of fake-idle -- reusing the same skip_next_idle pattern as with idle

src/job_thread.rs

@@ -70,6 +70,7 @@ impl JobThread {
 
         state.idle = true;
         cvar.notify_one();
+        info!(context, "Interrupting {}-IDLE... finished", self.name);
     }
 
     pub fn fetch(&mut self, context: &Context, use_network: bool) {