# GitLab: Major incident: CI pipelines not starting on merge requests.

**Summary:** _summary pending_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2026-06-30 08:52 UTC · Detected: 2026-10-18 05:08 UTC
- [Source: https://status.gitlab.com/pages/incident/5b36dc6502d06804c08349f7/6a4383b4d2133f5159beffe4](https://status.gitlab.com/pages/incident/5b36dc6502d06804c08349f7/6a4383b4d2133f5159beffe4)
- [Company: GitLab](https://rewindex.com/company/gitlab.md)
- Versions: before (none: first archived) → after incident\_version:188/6a4383b4d2133f5159beffe4@1121d0924225
- Change 1 of 1 for this incident

Incident page (full timeline): [CI pipelines not starting on merge requests.](https://rewindex.com/company/gitlab/incidents/6a4383b4d2133f5159beffe4.md)
## What changed

**1. Added: Title**

```diff
+ CI pipelines not starting on merge requests.
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-06-30 08:52 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-06-30 12:07 UTC
```

**6. Added: Affected components**

```diff
+ CI/CD, Website
```

**7. Added: Update** (investigating) · 2026-06-30 08:52 UTC

```diff
+ We are currently investigating an issue affecting CI pipelines not starting on merge requests. Our team is actively investigating the root cause.
```

**8. Added: Update** (identified) · 2026-06-30 09:37 UTC

```diff
+ We have identified that the sidekiq workers processing the jobs are getting deferred. The team is working on identifying the remediation steps.
```

**9. Added: Update** (identified) · 2026-06-30 10:51 UTC

```diff
+ No material updates to report. We are continuing to investigate the current issue and engineers are working to determine remediation steps.
```

**10. Added: Update** (identified) · 2026-06-30 11:19 UTC

```diff
+ Our engineers are still investigating the issue but jobs are starting to be processed with a delay. More details can be found here: https://gitlab.com/gitlab-com/gl-infra/production/-/work_items/22412
```

**11. Added: Update** (monitoring) · 2026-06-30 11:39 UTC

```diff
+ Queues and runner backlog are trending back towards normal, while systems continue to work through the remaining backlog. Engineers are continuing to monitor this.
```

**12. Added: Update** (resolved) · 2026-06-30 12:07 UTC

```diff
+ Incident has now been mitigated and runner backlogs are now back to normal. CI pipelines are now resuming. Engineers will continue to monitor this recovery.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-06-30 08:52 UTC | Major incident: CI pipelines not starting on merge requests. (this change) | outage |

All GitLab changes: [timeline](https://rewindex.com/company/gitlab/changes.md)
_Diff excerpts are shown on normalized text: dates, counters and tokens appear as ‹date›, ‹count›, ‹tok›; noise-only edits are hidden. Rewindex shows the changed passages, not a copy of the page._


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Canonical: https://rewindex.com/change/i7d1ece03f3911c · Markdown: https://rewindex.com/change/i7d1ece03f3911c.md · JSON: https://rewindex.com/api/v1/changes/i7d1ece03f3911c · Generated 2026-10-18T11:25:23.013Z