Experiment to confirm that multiple Coroutines will all suspend when calling `Deferred.await` (and all get the resulting failure)

async-await.kt

import kotlinx.coroutines.Deferred
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.async
import kotlinx.coroutines.delay
import kotlinx.coroutines.launch
import kotlinx.coroutines.supervisorScope

suspend fun <T> Deferred<T>.awaitCatching(launchNumber: Int, startTime: Long) = try {
    await()
} catch (t: Throwable) {
    val elapsed = System.currentTimeMillis() - startTime
    println("launch@$launchNumber caught ${t.message} at ${elapsed / 1_000f} seconds")
}

suspend fun main() = supervisorScope<Unit> {
    val start = System.currentTimeMillis()
    val job = async {
        delay(5_000L)
        error("ouch")
    }

    launch(Dispatchers.IO) {
        delay(500L)
        job.awaitCatching(1, start)
    }

    launch(Dispatchers.IO) {
        delay(2_500L)
        job.awaitCatching(2, start)
    }

    launch(Dispatchers.IO) {
        delay(7_000L)
        job.awaitCatching(3, start)
    }
}

output.txt

launch@2 caught ouch at 5.059 seconds
launch@1 caught ouch at 5.059 seconds
launch@3 caught ouch at 7.056 seconds