add log

Author: loongs-zhang

core/src/common/ci.rs

@@ -1,8 +1,11 @@
+use crate::error;
+
 /// just for CI
 pub fn init() {
     let _ = std::thread::spawn(|| {
         // exit after 600 seconds, just for CI
         std::thread::sleep(std::time::Duration::from_secs(600));
+        error!("Did you mistakenly enable the 'ci' feature of open-coroutine in your project? open-coroutine CI timeout!");
         std::process::exit(-1);
     });
 }