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CI flake - Windows self-hosted runner loses communication with GitHub #5799
Description
Detected by CI Gremlin after a failed GitHub Actions attempt succeeded on rerun.
Tests:
Upload build artifacts (Windows)
Error:
Could not fetch job logs: Command '['gh', 'api', '-X', 'GET', 'repos/clockworklabs/SpacetimeDB/actions/jobs/97516734534/logs']' returned non-zero exit status 1.
Failed job runs:
- https://github.com/clockworklabs/SpacetimeDB/actions/runs/32752874810/job/97516734534 (Upload build artifacts (Windows), attempt 2 -> 3)
Timeout detection:
- none
Context:
- none
Activity
5 remaining items
bfops commentedon Oct 20, 2026
Consolidated manifestations:
[-]CI flake: Upload build artifacts (Windows)[/-][+]CI flake - Windows job logs cannot be retrieved[/+]clockwork-labs-bot commentedon Oct 26, 2026
Symptoms and root cause
Exact linked job: run
32752874810, job97516734534, attempt2.Exact-job logs return HTTP
404; the failure is not diagnosable from the detector's log-fetch error alone. The exact check annotation instead says the self-hosted runner lost communication with the server. Runnerghr-ea9685f3ran 16:57:40–17:08:41 UTC on 2026-08-24. This establishes runner loss, not an artifact-upload assertion. Host termination, CPU/memory starvation, and network interruption are possibilities named by GitHub, not proven causes.Duplicate selection
Keep this ticket as the human-consolidated Windows runner-loss/unavailable-log root. Open #5821 has the same explicit runner-loss annotation and already identifies this tracker; do not reverse the established root or reorganize it.
Proposed operations
Dry run — proposals only. Keep this ticket open. Proposed title:
CI flake - Windows self-hosted runner loses communication with GitHub. Proposed team: DevOps, for runner lifecycle/connectivity. Preserve the human consolidation. No title, team, state, label, project, or duplicate changes applied.bfops commentedon Oct 28, 2026
@clockwork-labs-bot go ahead with the proposed changes
[-]CI flake - Windows job logs cannot be retrieved[/-][+]CI flake - Windows self-hosted runner loses communication with GitHub[/+]clockwork-labs-bot commentedon Oct 28, 2026
Applied your approval: renamed this issue to CI flake - Windows self-hosted runner loses communication with GitHub. Verified it remains open with Team: DevOps in the Test flakes project. No other triage metadata changed.