Exception.kt

import kotlinx.coroutines.*


fun main(args: Array<String>) {
    val job = SupervisorJob()
    val scope = CoroutineScope(job + Dispatchers.Default)

    val deferred = GlobalScope.async(Dispatchers.Default, start = CoroutineStart.LAZY) {
        delay(5000)
        throw Exception("boom")
    }

    scope.launch {
        try {
            deferred.await()
        } catch (e: Exception) {
            println("error awaiting: $e")
        }
    }

    runBlocking { job.cancelAndJoin() }

    Thread.sleep(10000)
}