* utils: handle race condition gracefully
* utils: add a test
* update Cargo.lock
* utils: remove a warning
* utils: init logger in tests
* utils: update the outdated comment
* util: wait for both subsystem and test_future to finish
* Revert "util: wait for both subsystem and test_future to finish"
This reverts commit 075b39242cd7200e3f4c24ea42f702c3124ce41c.