memory leaks: Empty Android project + Dagger2 + LeakCanary - dagger-2

Question

Faced such a problem.
I create a new project with Empty Activity, and add the dependencies of the project, dagger2 and leakcanary.
Run the application, then close and the leakcanary displays a memory leak.
Add dependencies
android {
compileSdkVersion 26
buildToolsVersion '26.0.3'
defaultConfig {
applicationId "xxxxx"
minSdkVersion 16
targetSdkVersion 26
versionCode 1
versionName "1.0"
}
}
//Dagger
implementation "com.google.dagger:dagger:2.14.1"
kapt "com.google.dagger:dagger-compiler:2.14.1"
//Debug
debugImplementation "com.squareup.leakcanary:leakcanary-android:1.5.4"
Create appkication class and init leakcanary
class AppDelegate: Application() {
override fun onCreate() {
super.onCreate()
onApplicationCreate()
initDagger(this)
}
private fun initDagger(app: Application): AppComponent =
DaggerAppComponent.builder()
.appModule(AppModule(app))
.dataModule(DataModule())
.build()
private fun onApplicationCreate() {
if (BuildConfig.DEBUG) {
if (LeakCanary.isInAnalyzerProcess(this)) {
return
}
LeakCanary.install(this)
}
}
}
MainActivity class
class MainActivity : Activity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
}
}
Create dagger component
#Singleton
#Component(modules = arrayOf(AppModule::class, DataModule::class))
interface AppComponent {
}
#Module
class AppModule(private val appContext: Application) {
#Provides
fun provideContext() = appContext
}
#Module
class DataModule {
}
Here is what leakcanary shows screen
If the dependence of the dagger2 is removed, then there is no leakage.
What am I doing wrong?