A modern programming language that makes developers happier.

kotlinlang

is this <https://youtrack.jetbrains.com/issue/KT-15714>?
```
java.lang.AbstractMethodError
	at <http://com.XXX|com.XXX>$yyy$result$1.doResume(XXX.kt:28)
	at kotlin.jvm.internal.CoroutineImpl.resume(CoroutineImpl.kt:50)
	at kotlinx.coroutines.experimental.DispatchedContinuation.resume(CoroutineDispatcher.kt:57)
	at kotlin.coroutines.CoroutinesKt.startCoroutine(CoroutinesLibrary.kt:58)
	at kotlinx.coroutines.experimental.BuildersKt.runBlocking(Builders.kt:56)
	...
```