RC21-1 The fiber's scope has ended before the fiber itself has ended

[Fristi]

Since upgrading to RC21-1 we'll get:

java.lang.IllegalStateException: Defect: The fiber's scope has ended before the fiber itself has ended

Anyone else? We are using interop-cats, http4s, doobie.

Working on a reproduction case

[sebver]

This is a reproduction with http4s: https://github.com/sebver/zio-http4s-scope-issue

There are some instructions in the readme, you should see the error appear after a wile.

The requests don't actually fail - so I'm not sure what the consequences are.

[adamgfraser]

Thanks for reporting! Will take a look.

[adamgfraser]

Looks like this issue also replicates on RC21. Can you confirm?

[sebver]

I just checked and I can confirm. We hadn't noticed since we upgraded straight to RC21-1 from RC20.

[adamgfraser]

Makes sense, it just helps narrow down the cause since it eliminates one potential change that was made in RC21-1 as a candidate.

[adamgfraser]

@Fristi @sebver We just merged #3910 which should fix this. If you have a chance and are able to test with snapshots could you let me know if this resolves your issue?

[sebver]

@adamgfraser I just let it run locally for a while and it appears to be fixed! 🙏

Just checking if there are any plans for an RC21-2 at some point? Don't mind verifying it in our test/production environments, but a snapshot is a bit of a hard sell there. 😄

[adamgfraser]

@sebver Totally makes sense! 😃

Yes, I think so, maybe after #3883 and #3919 get merged.

[Fristi]

Thank you so much!