Same issue here - When its successful it takes less than 20 minutes to build but that only seems to happen once every 5 attempts or so. The rest are just timing out without any errors showing up in logs. Have confirmed Cocoapods is setup correctly so no issues there. Will also file in feedback assistant fwiw

Also seeing this crash occur frequently on devices running iOS 15.1 (doesn't seem to appear in 15.0). @eskimo you mentioned it might be a known bug that a radar exists for but I'm unable to find anything using the radar id you provided. I know these reports are intentionally kept private but is there somewhere we can track progress/possible workarounds on this known bug? Thanks in advance.