我在mac os high sierra，打字安装守望者
Kishores-MacBook-Pro:~ kishore$ brew install watchman
Error: Could not create /usr/local/Cellar
Check you have permission to write to /usr/local
Kishores-MacBook-Pro:~ kishore$ sudo chown -R $USER /usr/local
chown: /usr/local: Operation not permitted
Kishores-MacBook-Pro:~ kishore$