Android Build 경고 해결 (fix watchman Recrawled warning)

원인

watchman에서 filesystem sync가 끊어진 것에 대한 경고이다.

에러 메시지

watchman warning:  Recrawled this watch 1 times, most recently because:
MustScanSubDirs UserDroppedTo resolve, please review the information on
https://facebook.github.io/watchman/docs/troubleshooting.html#recrawl
To clear this warning, run:
`watchman watch-del '/Users/username/Documents/workspace/MyApp' ; watchman watch-project '/Users/username/Documents/workspace/MyApp'`

해결방법

watchman watch-del '/Users/username/Documents/workspace/MyApp'
watchman watch-project '/Users/username/Documents/workspace/MyApp'