async в корне и потерянная ошибка

import kotlinx.coroutines.*

fun main() = runBlocking {
    val scope = CoroutineScope(SupervisorJob())
    val d = scope.async {
        delay(50)
        error("boom")
    }
    delay(200)
    println("still alive")
    try {
        d.await()
    } catch (e: IllegalStateException) {
        println("await: ${e.message}")
    }
    println("active=${scope.isActive}")
}