[Bug]: Android crash — NoSuchElementException

[bequbed]

No report was uploaded automatically. This is the locally reviewed, redacted copy.

Affected area

Android app

What happened?

NoSuchElementException

Recovery

The app restarted. Work already running on Hermes may still be active.

Environment

• Hermes-Relay version/tag: 1.15.1 (code 54)
• Install surface: Google Play
• Android device and OS: samsung SM-S928B — Android 16 (SDK 36)
• Connection mode: unknown
• Report ID: rpt-8c4c9a9e3b5e4869
• App session ID: app-2b4b0131d8b440f7

Redacted technical detail

Thread: DefaultDispatcher-worker-5
java.util.NoSuchElementException
	at java.util.concurrent.ConcurrentHashMap$ValueIterator.next(ConcurrentHashMap.java:3502)
	at a11.p0(dex-id-3e33d68aff7c30ec66348375a7bc3f8c3522fa00:41)
	at im2.a(SourceFile:26)
	at cb1.invokeSuspend(SourceFile:138)
	at g40.resumeWith(SourceFile:7)
	at uc2.run(SourceFile:113)
	at w4.run(SourceFile:547)
	at mh7.run(SourceFile:2)
	at kp1.run(SourceFile:87)
	Suppressed: gb2: [p57{Cancelling}@3ab9b89, Dispatchers.IO]

_{Captured locally by Hermes-Relay · 2026-09-04T22:19:34.245529Z}

[hermes-relay-triage]

🤖 Hermes-Relay automated triage

Thanks for reporting this crash and including the redacted trace! The retained mapping for the 1.15.1 Google Play build retraces it to endpoint-cache invalidation during Android's sustained network-loss callback. Specifically, an active route probe can finish and remove itself while EndpointResolver.clearCache() is copying the concurrent in-flight probe collection, which matches the reported ConcurrentHashMap.ValueIterator.next() failure. The older #289 report has a different retraced cause and does not appear to be a duplicate.

If this happens again, please note whether the phone was switching between Wi-Fi, mobile data, or a VPN/Tailscale connection near the crash; a sanitized Diagnostics support bundle from that time would also help confirm the trigger. A maintainer will follow up to confirm the fix and regression coverage for this invalidation race.