Delays starting macOS jobs that use Xcode 26.6.0

Timeline

1. 14:47 UTC CircleCI status page · Reported Delays starting macOS jobs that use Xcode 26.6.0
2. 14:47 UTC CircleCI status page · Investigating Since approximately 14:00 UTC, customers running macOS jobs that use Xcode 26.6.0 on the M4 Pro large resource class are experiencing delays starting jobs. Wait times have reached 30 minutes or more. Thank you for your patience while our engineers investigate. We will provide another update by 15:30 UTC.
3. 15:17 UTC CircleCI status page · Identified Delays starting macOS jobs that use Xcode 26.6.0 have recovered. Since approximately 15:11 UTC, macOS jobs that use Xcode 26.4 are experiencing delays starting, with wait times of about 30 minutes. Thank you for your patience while our engineers work to resolve this. We will provide another update by 15:45 UTC.
4. 16:01 UTC CircleCI status page · Resolved Between approximately 14:00 UTC and 15:51 UTC on October 14, customers running macOS jobs that use Xcode 26.6.0 or Xcode 26.4 experienced delays starting jobs. From approximately 14:00 UTC, jobs that use Xcode 26.6.0 on the M4 Pro large resource class waited 30 minutes or more to start, and these delays recovered at approximately 15:12 UTC. From approximately 15:11 UTC, jobs that use Xcode 26.4 waited about 30 minutes to start. The issue has been resolved and all affected functionality has returned to normal. We thank you for your patience while our team worked on implementing a fix.