Почему не завершается приложение (console+kotlin coroutines+retrofit)?

Question

[alashkov83]

Почему не завершается приложение (console+kotlin coroutines+retrofit)?

import com.google.gson.annotations.SerializedName
import kotlinx.coroutines.Deferred
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.async
import kotlinx.coroutines.runBlocking
import retrofit2.Response
import retrofit2.Retrofit
import retrofit2.converter.gson.GsonConverterFactory
import retrofit2.http.GET
import retrofit2.http.Path

data class Place (
    @SerializedName("place name")
    val place_name: String,
    val longitude: String,
    val state: String,
    @SerializedName("state abbreviation")
    val state_abbreviation: String,
    val latitude: String
)
data class ZipCode(
    @SerializedName("post code")
    val post_code: String,
    val country: String,
    @SerializedName("country abbreviation")
    val country_abbreviation: String,
    val places: Array<Place>
)
interface GameApiService {
    @GET("{country}/{code}")
    suspend fun getGames(@Path("country") country: String, @Path("code") code: Int): Response<ZipCode>
}

suspend fun main(): Unit = runBlocking {
    val retrofit = Retrofit.Builder()
        .baseUrl("https://api.zippopotam.us/")
        .addConverterFactory(GsonConverterFactory.create())
        .build()

    val jokeApiService = retrofit.create(GameApiService::class.java)
    val job: Deferred<Response<ZipCode>> = async(Dispatchers.IO) {
            jokeApiService.getGames("ru", 140100)
    }
    val zipcode = job.await()
    if (zipcode.isSuccessful)
        println(zipcode.body())
    //exitProcess(0)
}