[ci.yaml] Validation check fails on reruns #100081
Description
https://github.com/flutter/engine/pull/32006/checks?check_run_id=5542883000
HTTP 500: flutter/engine does not have any targets
The ci.yaml check triggered all the builds, but failed somewhere at the end (possibly on a retry of the check).
Bad state: No element
#0 List.single (dart:core-patch/growable_array.dart:370:22)
#1 Scheduler.processCheckRun (package:cocoon_service/src/service/scheduler.dart:409:88)
#2 GithubWebhook.post (package:cocoon_service/src/request_handlers/github_webhook.dart:76:31)
<asynchronous suspension>
#3 RequestHandler.service.<anonymous closure> (package:cocoon_service/src/request_handling/request_handler.dart:52:22)
<asynchronous suspension>
#4 main.<anonymous closure>.<anonymous closure> (file:///app/bin/server.dart:267:9)
<asynchronous suspension>
This may have been because the PR failed a Cocoon check (adding a new dimension), which required an updated to Cocoon. Then the retry was run on the check. The issue being that the retry might not work.