GitHub: macos-15-arm64 hosted runner queue delays
Timeline of updates
- resolved
On March 18, between 13:04 and 16:55 UTC, Actions workflows relying on hosted runners using the beta MacOS 15 image experienced increased queue time waiting for available runners. An image update was pushed the previous day that included a performance reduction. The slower performance caused longer average runtimes, exhausting our available Mac capacity for this image. This was mitigated by rolling back the image update. We have updated our capacity allocation to the beta and other Mac images and are improving monitoring in our canary environments to catch this potential issue before it impacts customers.
From GitHub’s published incident history: for incidents before Rewindex began polling this status page, only the final update text is available.
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This incident predates live tracking (October 17, 2026). It came from the vendor’s own published history, which is not covered by checkpoints.
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Cite this
Status incident (vendor impact label: minor) posted by GitHub, started 2025-03-18 15:05 UTC, resolved after 2.2 h, 1 update(s).
- Title
- macos-15-arm64 hosted runner queue delays
- Vendor
- GitHub
- Date
- URL
- https://rewindex.com/company/github/incidents/yz50lpc8d4xq
GitHub profileRecent GitHub incidentsAll outages on March 18, 2025GitHub in March 2025MarkdownJSON