rongcui@Rongs-MacBook-Pro 2 % gradle build
> Task :checkstyleMain FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':checkstyleMain'.
> Unable to create Root Module: config {/Users/rongcui/Documents/GitHub/cmu-17514/rongcui/homework/2/config/checkstyle/checkstyle.xml}, classpath {/Users/rongcui/Documents/GitHub/cmu-17514/rongcui/homework/2/build/classes/java/main:/Users/rongcui/Documents/GitHub/cmu-17514/rongcui/homework/2/build/resources/main:/Users/rongcui/.gradle/caches/modules-2/files-2.1/junit/junit/4.12/2973d150c0dc1fefe998f834810d68f278ea58ec/junit-4.12.jar:/Users/rongcui/.gradle/caches/modules-2/files-2.1/org.hamcrest/hamcrest-core/1.3/42a25dc3219429f0e5d060061f71acb49bf010a0/hamcrest-core-1.3.jar}.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 878ms
4 actionable tasks: 2 executed, 2 up-to-date