Crash in cancelDeadLineTimer

[cstavitsky]

Opening this on behalf of a customer.

Platform

iOS

Environment

Production

Installed

Swift Package Manager

Version

8.39.0

Xcode Version

xcode 16.0

Did it work on previous versions?

The crash didn't appear on 8.36.0

Steps to Reproduce

"We are currently at 1% rollout and have seen 10 crashes, so certainly not an emergency, but something I'm going to keep an eye on."

Expected Result

No crash occurs

Actual Result

The crash occurs.

Are you willing to submit a PR?

No response

[philipphofmann]

This could be related to #3977. This crash cancelDeadlineTimer has nothing to do with v 8.39.0. We see rare occurrences across multiple SDK versions across almost all 8.x.x versions in our internal SDK crash detection.