K
Kord•2y ago
tmpod

Weird internal coroutines machinery exception

I have some code that looks like this: 
kord.rest.channel.createMessage(id) { ... }  // runs
someOtherChannelBehavior.delete()  // doesn't run and apparently yields this machinery error
kmongoCollection.doStuff()  // runs
kord.rest.channel.createMessage(id) { ... }  // runs
someOtherChannelBehavior.delete()  // doesn't run and apparently yields this machinery error
kmongoCollection.doStuff()  // runs
6 Replies
tmpod
tmpodOP•2y ago
the exception: 
Exception in thread "DefaultDispatcher-worker-15" kotlinx.coroutines.CoroutinesInternalError: Fatal exception in coroutines machinery for DispatchedContinuation[Dispatchers.Default, Continuation at io.ktor.client.HttpClient.execute$ktor_client_core(HttpClient.kt:191)@6c2d5395]. Please read KDoc to 'handleFatalException' method and report this incident to maintainers
    at kotlinx.coroutines.DispatchedTask.handleFatalException(DispatchedTask.kt:144)
    at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:115)
    at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:584)
    at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:793)
    at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:697)
    at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:684)
    Suppressed: kotlinx.coroutines.internal.DiagnosticCoroutineContextException: [StandaloneCoroutine{Completed}@31de9548, Dispatchers.Default]
Caused by: java.lang.ClassCastException: class kotlin.coroutines.jvm.internal.CompletedContinuation cannot be cast to class kotlinx.coroutines.internal.DispatchedContinuation (kotlin.coroutines.jvm.internal.CompletedContinuation and kotlinx.coroutines.internal.DispatchedContinuation are in unnamed module of loader 'app')
    at kotlinx.coroutines.CoroutineDispatcher.releaseInterceptedContinuation(CoroutineDispatcher.kt:166)
    at kotlin.coroutines.jvm.internal.ContinuationImpl.releaseIntercepted(ContinuationImpl.kt:118)
    at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:39)
    at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:104)
    ... 4 more
Exception in thread "DefaultDispatcher-worker-15" kotlinx.coroutines.CoroutinesInternalError: Fatal exception in coroutines machinery for DispatchedContinuation[Dispatchers.Default, Continuation at io.ktor.client.HttpClient.execute$ktor_client_core(HttpClient.kt:191)@6c2d5395]. Please read KDoc to 'handleFatalException' method and report this incident to maintainers
    at kotlinx.coroutines.DispatchedTask.handleFatalException(DispatchedTask.kt:144)
    at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:115)
    at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:584)
    at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:793)
    at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:697)
    at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:684)
    Suppressed: kotlinx.coroutines.internal.DiagnosticCoroutineContextException: [StandaloneCoroutine{Completed}@31de9548, Dispatchers.Default]
Caused by: java.lang.ClassCastException: class kotlin.coroutines.jvm.internal.CompletedContinuation cannot be cast to class kotlinx.coroutines.internal.DispatchedContinuation (kotlin.coroutines.jvm.internal.CompletedContinuation and kotlinx.coroutines.internal.DispatchedContinuation are in unnamed module of loader 'app')
    at kotlinx.coroutines.CoroutineDispatcher.releaseInterceptedContinuation(CoroutineDispatcher.kt:166)
    at kotlin.coroutines.jvm.internal.ContinuationImpl.releaseIntercepted(ContinuationImpl.kt:118)
    at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:39)
    at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:104)
    ... 4 more
has anyone seen anything like this? or has a guess on what the culprit is? there's a YouTrack bug report for the same exception, although I don't see how my code could fit in their scenario... anyways, it's supposedly fixed in 1.7.20, yet I'm using 1.8.20 https://youtrack.jetbrains.com/issue/KT-50832/Method-references-to-suspend-inline-functions-are-processed-incorrectly
tmpod
tmpodOP•2y ago
https://github.com/ktorio/ktor/blob/39be9e5594e823710ad1603478294ac75c3cb5ac/ktor-client/ktor-client-core/common/src/io/ktor/client/HttpClient.kt#L191 mentioned Ktor line --^
GitHub
ktor/HttpClient.kt at 39be9e5594e823710ad1603478294ac75c3cb5ac · kt...
Framework for quickly creating connected applications in Kotlin with minimal effort - ktor/HttpClient.kt at 39be9e5594e823710ad1603478294ac75c3cb5ac · ktorio/ktor
SchlaubiBus
SchlaubiBus•2y ago
When did this start happening?
tmpod
tmpodOP•2y ago
I've seen manifestations of this error for quite a while, but it has always been so darn unpredictable I never managed to debug it. But now, I'm consistently getting it in this piece of code. or so it seems, at least
SchlaubiBus
SchlaubiBus•2y ago
I've never seen it
tmpod
tmpodOP•2y ago
:(

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