Outage in CircleCI
Duplicate Notifications
Resolved MinorIncident Report
Between Dec 2, 2025 16:20 UTC and Dec 3, 2025 14:27 UTC, a change deployed to our workflow execution system caused duplicate notifications to be sent to some customers and triggered unexpected auto-reruns for a small number of projects.
Impact:
- Some customers received multiple failure notification emails for the same workflow.
- The number of duplicate notifications varied based on how many jobs in the workflow were affected (e.g., marked skipped or cancelled).
- A subset of customers may have received duplicate Slack notifications.
- A small number of projects experienced duplicated auto-reruns.
The issue has been fully mitigated, and notification behavior has returned to normal. We appreciate your patience while our team resolved this issue.
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RESOLVED
5 months ago - at 12/03/2025 04:01PM
Between Dec 2, 2025 16:20 UTC and Dec 3, 2025 14:27 UTC, a change deployed to our workflow execution system caused duplicate notifications to be sent to some customers and triggered unexpected auto-reruns for a small number of projects.
Impact:
- Some customers received multiple failure notification emails for the same workflow.
- The number of duplicate notifications varied based on how many jobs in the workflow were affected (e.g., marked skipped or cancelled).
- A subset of customers may have received duplicate Slack notifications.
- A small number of projects experienced duplicated auto-reruns.
The issue has been fully mitigated, and notification behavior has returned to normal. We appreciate your patience while our team resolved this issue.
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