-x :app:mockableAndroidJar解决办法

1.Go to File -> Settings -> Build, Execution, Deployment -> Compiler
2.Add to "Command-line Options":
-x :app:mockableAndroidJar
3.Press "OK" and try to Rebuild Project again.

或者
（经鉴定有效：）
allprojects {
repositories {
jcenter()
}
/防止调用过时的mockableAndroidJar报错/
gradle.taskGraph.whenReady {
tasks.each { task ->
if (task.name.equals('mockableAndroidJar')) {
task.enabled = false
}
}
}
}