Build failures Xcode 26.4.0
Apr 24, 17:25 UTCApr 24, 18:36 UTC
Duration
1h 11m
Impact
Minor
Root cause
Not disclosed
CircleCI, 90 days
24 incidents
Affected
macOS Jobs
Final update
Customers running macOS jobs on m4pro.medium and m4pro.large with the xcode:26.4.0 image experienced job rejections with the error: "Job was rejected because resource class , image xcode:26.4.0 is not a valid resource class". The issue has been resolved and affected jobs should now run normally. Customers whose jobs failed may rerun affected jobs. We thank you for your patience while our team worked on implementing a fix.
Timeline
- Resolved · Apr 24, 18:36 UTC
Customers running macOS jobs on m4pro.medium and m4pro.large with the xcode:26.4.0 image experienced job rejections with the error: "Job was rejected because resource class , image xcode:26.4.0 is not a valid resource class". The issue has been resolved and affected jobs should now run normally. Customers whose jobs failed may rerun affected jobs. We thank you for your patience while our team worked on implementing a fix.
- Monitoring · Apr 24, 18:01 UTC
A fix has been implemented and we are monitoring the results.
- Identified · Apr 24, 17:25 UTC
There are build failures for Xcode 26.4.0; we have identified the issue and are currently implementing a fix.
More from CircleCI
Full historyIncreased wait time for Machine and Remote Docker jobsFrom 13:55 to 15:07 UTC on November 3, customers running Linux machine jobs and Remote Docker saw increased wait times for their jobs to start, and the delays were longest from 14:16 to 14:41.lasted 54mPostmortemDelays for gen2 dedicated IP range jobslasted 1h 3mIncreased Docker gen2 wait timeslasted 1h 24mIncreased wait times for macOS jobs on m4pro.largelasted 2h 16mDelays starting macOS jobs that use Xcode 26.6.0lasted 1h 13mDelay in data appearing in UI and APIlasted 14h 36m