Renderscript support mode is currently not supported for the purpose of Renderscript 21+

Question

Now I work with GCM, and when I add classpath 'com.google.gms:google-services:2.0.0-alpha3'to projects build.gradlefor apply plugin: 'com.google.gms.google-services'in applications build.gradle, the compiler generates a warning due to the fact that it cannot build the project

Warning:Renderscript support mode is not currently supported with renderscript target 21+

and when I delete classpath 'com.google.gms:google-services:2.0.0-alpha3'it works fine. I follow the official quick launch of the GCM sample Google application and I create it as a separate project and it works too well. This happens when I try to add this feature to my application. Does anyone know what is going wrong?