Execution failed for task ':app:packageDebug'.
> Duplicate files copied in APK META-INF/services/javax.annotation.processing.Processor
File 1: /Users/usr_name/Documents/android_eclipse_workspace/xxx/yyy/zzz
File 2: /Users/usr_name/Documents/android_eclipse_workspace/xxx/yyy/zzz
みたいなエラーの対処法を見つけた
build.gradleに
packagingOptions {
exclude 'META-INF/services/javax.annotation.processing.Processor'
}
を追加したらビルドできる