# Travis CI: Major incident: Internal Mac build errors

**Summary:** Travis CI reported a major Mac Builds outage from 2020-03-22 16:23 UTC to 2020-03-22 17:12 UTC, lasting 49 min. A portion of Mac infrastructure prevented builds from running correctly, with affected jobs logging "An error occurred while generating the build script." Travis CI removed affected hardware from the executor pool and restored normal Mac build capacity. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2020-03-22 16:23 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: http://stspg.io/wwq8w5llfbf1](http://stspg.io/wwq8w5llfbf1)
- [Company: Travis CI](https://rewindex.com/company/travis-ci.md)
- Versions: before (none: first archived) → after incident\_version:213/7mbxh26jk3sl@5253b6000419
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Internal Mac build errors
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2020-03-22 16:23 UTC
```

**5. Added: Resolved time**

```diff
+ 2020-03-22 17:12 UTC
```

**6. Added: Affected components**

```diff
+ Builds Processing - Mac Builds
```

**7. Added: Update** (identified) · 2020-03-22 16:23 UTC

```diff
+ We have identified an issue with a portion of Mac infrastructure which prevents builds from running correctly. We are working on mitigating the impact of this problem. Affected jobs would indicate "An error occurred while generating the build script." in the logs.
```

**8. Added: Update** (monitoring) · 2020-03-22 16:42 UTC

```diff
+ We have removed the affected hardware out of the executor pool. Requests should work as expected at this time.
```

**9. Added: Update** (resolved) · 2020-03-22 17:12 UTC

```diff
+ The Mac build capacity has been brought back to normal.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2020-03-22 16:23 UTC | Major incident: Internal Mac build errors (this change) | outage |

All Travis CI changes: [timeline](https://rewindex.com/company/travis-ci/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/if5460bc52d700c · Markdown: https://rewindex.com/change/if5460bc52d700c.md · JSON: https://rewindex.com/api/v1/changes/if5460bc52d700c · Generated 2026-10-18T02:31:31.439Z