Kotlin GlobalScope协同程序未将错误记录到控制台

为什么下面的代码没有登录到控制台是TimeoutCancellationException

@Test fun noExceptionLogged(){
    GlobalScope.launch{
        withTimeout(4000) {
            repeat(1000) { i ->
                println("I'm sleeping $i ...")
                delay(500L)
            }
        }
    }
    Thread.sleep(20_000)
}

---

由于

GlobalScope

nature，它似乎是这样工作的。无法取消它，因此它会吞噬

取消异常

GlobalScope.launch { // won't print anything
    throw CancellationException()
}

GlobalScope.launch { // will print stacktrace
    throw RuntimeException()
}

runBlocking { // will print stackrace
    throw RuntimeException()
}

GlobalScope.launch { // will print "Hello!"
    try {
        throw CancellationException()
    } catch (e: Exception) {
        println("Hello!")
    }
}