Speed is addictive.
After speeding up PHP Code Sniffer runs, the slowest job for Etsy was running php -l on all the files.
So, in short, the latest release of CSRunner, version 0.2.1, will execute lint on the recently changed files.
You can also run the lint command separately, but why would you want to do this instead of your precious find piped to a php -l script?
Because this command outputs to checkstyle format!
Which means if you are Jenkins and using the Jenkins Checkstyle Pluginjenk, you can add the resulting checkstyle xml to your list of Checkstyle results. Voila!
Enjoy!