Failed to compile resources with the following parameters

Failed to compile resources with the following parameters:
-bootclasspath "/Users/ELING/Library/Android/sdk/platforms/android-25/android.jar" -d "/Users/ELING/Desktop/a/IceRunning-Unlimted/Temp/StagingArea/bin/classes" -source 1.6 -target 1.6 -encoding UTF-8 "android/support/v4/R.java" "com/gamesky/pol/R.java" "com/google/android/gms/R.java" "com/google/android/gms/auth/R.java" "com/google/android/gms/auth/api/R.java" "com/google/android/gms/base/R.java" "com/google/android/gms/drive/R.java" "com/google/android/gms/games/R.java" "com/google/android/gms/nearby/R.java" "com/google/android/gms/tasks/R.java" "com/google/example/games/mainlibproj/R.java"
警告: /Users/ELING/Library/Android/sdk/platforms/android-25/android.jar(java/lang/Object.class): 主版本 52 比 51 新, 此编译器支持最新的主版本。
建议升级此编译器。
警告: /Users/ELING/Library/Android/sdk/platforms/android-25/android.jar(java/lang/AutoCloseable.class): 主版本 52 比 51 新, 此编译器支持最新的主版本。
建议升级此编译器。
2 个警告

UnityEditor.HostView:OnGUI()

/Library/Java/JavaVirtualMachines/jdk1.8.0_101.jdk/Contents/Home