Application Install Fail

Im getting Application Install Fail error i have tried device and emulator. i got this couple of waring in messages. (GithubBrowserSample)

Information:Gradle tasks [clean, :app:generateDebugSources, :app:generateDebugAndroidTestSources, :app:mockableAndroidJar, :app:prepareDebugUnitTestDependencies, :app:compileDebugSources, :app:compileDebugAndroidTestSources, :app:compileDebugUnitTestSources]
Warning:Supported source version 'RELEASE_7' from annotation processor 'android.arch.persistence.room.RoomProcessor' less than -source '1.8'
/Users/shanuka/android-architecture-components/GithubBrowserSample/app/src/main/java/com/android/example/github/db/GithubDb.java
Warning:(33, 17) Schema export directory is not provided to the annotation processor so we cannot export the schema. You can either provide `room.schemaLocation` annotation processor argument OR set exportSchema to false.
Warning:Supported source version 'RELEASE_7' from annotation processor 'android.arch.lifecycle.LifecycleProcessor' less than -source '1.8'

[mladenrakonjac]

I still have this problem. I am using:
classpath ‘com.android.tools.build:gradle:3.0.0-alpha5’ and Kotlin

My error is: Warning⚠️ Supported source version ‘RELEASE_7’ from annotation processor ‘android.arch.lifecycle.LifecycleProcessor’ less than -source ‘1.8’ Warning⚠️ Supported source version ‘RELEASE_7’ from annotation processor ‘android.arch.persistence.room.RoomProcessor’ less than -source ‘1.8’ Error:Execution failed for task ‘:app:kaptDebugKotlin’.

Internal compiler error. See log for more details

[jimandreas]

Thanks for the suggestion. I tried updating to rc2 - and it DID fix my junit failures - the

dao = mock(RepoDao.class);

was failing deep inside byte-buddy mysteriously in my derivative project. Dunno if rc2 fixed it or masked the problem. BUT I am still seeing the RELEASE_7 error.

Compiling with source level 1.8 and target level 1.8.

warning: Supported source version 'RELEASE_7' from annotation processor 
'android.arch.persistence.room.RoomProcessor' less than -source '1.8'
C:\Users\Jim\Desktop\AS22-active\PopM\app\src\main\java\com\jimandreas\aarch\popm\db\GithubDb.java:44: warning: Schema export directory is not provided to the annotation processor so we cannot export the schema. You can either provide `room.schemaLocation` annotation processor argument OR set exportSchema to false.
public abstract class GithubDb extends RoomDatabase {
            ^
warning: Supported source version 'RELEASE_7' from annotation processor 
'android.arch.lifecycle.LifecycleProcessor' less than -source '1.8'