feat: use rust_util 0.6.17

src/main.rs

@@ -1,5 +1,6 @@
 #[macro_use] extern crate lazy_static;
 #[macro_use] extern crate log;
+#[macro_use] extern crate rust_util;
 
 use std::collections::HashMap;
 use std::{fs, panic, thread};
@@ -43,15 +44,6 @@ lazy_static!{
     static ref CHECK_FAIL_MAP: Mutex<HashMap<String, u64>> = Mutex::new(HashMap::new());
 }
 
-macro_rules! opt_value {
-    ($e: expr) => {
-        match $e {
-            Some(o) => o,
-            None => return,
-        }
-    }
-}
-
 fn main() {
     panic::set_hook(Box::new(|panic_info| {
         error!("Panic in running keeprunningd: {:?}", panic_info);