System.InvalidOperationException errors possibly caused by Sentry.

[rodolfoBee]

Environment

Unity: 6000.0.45f1
Sentry: Unity package 3.2.3

Steps to Reproduce

NA

Expected Result

No errors to be raised.

Actual Result

The app runs into System.InvalidOperationException: An attempt was made to transition a task to a final state when it had already completed. errors

Any logs or screenshots

The following errors are reported to Sentry with little context. Each show an action taken by Sentry when creating and sending events.

System.InvalidOperationException: An attempt was made to transition a task to a final state when it had already completed.
  at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.SetException() in Generics__24.cpp:line 7307
  at Sentry.Protocol.Envelopes.EnvelopeItem.SerializeAsync() in Sentry__3.cpp:line 20735
  at System.Threading.ExecutionContext.RunInternal() in mscorlib__9.cpp:line 30488
  at System.Threading.ExecutionContext.RunInternal() in mscorlib__9.cpp:line 28945
  at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.Run() in mscorlib__19.cpp:line 23443

System.InvalidOperationException: An attempt was made to transition a task to a final state when it had already completed.
  at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.SetResult() in Generics__24.cpp:line 7169
  at System.Text.Json.Utf8JsonWriter.DisposeAsync() in Sentry.System.Text.Json__3.cpp:line 19595
  at System.Threading.ExecutionContext.RunInternal() in mscorlib__9.cpp:line 30488
  at System.Threading.ExecutionContext.RunInternal() in mscorlib__9.cpp:line 28945
  at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.Run() in mscorlib__19.cpp:line 23443

System.InvalidOperationException: An attempt was made to transition a task to a final state when it had already completed.
  at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.SetException() in Generics__24.cpp:line 7307
  at System.Text.Json.Utf8JsonWriter.FlushAsync() in Sentry.System.Text.Json__3.cpp:line 19926
  at System.Threading.ExecutionContext.RunInternal() in mscorlib__9.cpp:line 30488
  at System.Threading.ExecutionContext.RunInternal() in mscorlib__9.cpp:line 28945
  at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.Run() in mscorlib__19.cpp:line 23443

Original report: Discord

[linear]

UNITY-169

[bruno-garcia]

Looks like a runtime or Unity error. We need more details. Are there some logs?

It's probably something to run through Unity's support

[bruno-garcia]

Oh wait I see this happens when we set the exception to the task. Gotta check if do we that by hand if so, and we do it on a completed task, that'd explain

[bitsandfoxes]

Tiny update: We've been trying to reproduce this but no luck so far:

• Is this an issue from the underlying .NET code of the async-statemachine, it the IL2CPP implementation?
• Is this an issue where we fail to serialize something in general?

cc @Flash0ver