# Problem While building our iOS via fastlane on the SaaS runner we are seeing periodic application signing failures like the below job: https://gitlab.com/serveautomation/platform/customer-ios/-/jobs/2540117696 Specifically: ``` 2022-06-02 17:14:25.712 xcodebuild[7598:24563] [MT] IDEDistribution: -[IDEDistributionLogging _createLoggingBundleAtPath:]: Created bundle at path "/var/folders/2y/l5f_vyq13l7cx2jqljytypgh0000gn/T/Stellar - Staging_2022-06-02_17-14-25.710.xcdistributionlogs". error: exportArchive: Code signing "libswift_Concurrency.dylib" failed. Error Domain=IDEDistributionPipelineErrorDomain Code=0 "Code signing "libswift_Concurrency.dylib" failed." UserInfo={NSLocalizedDescription=Code signing "libswift_Concurrency.dylib" failed., NSLocalizedRecoverySuggestion=View distribution logs for more information.} ``` Re-trying the job is sometimes successful and the application will build as expected. Locally we can build with XCode 13.4 and 13.2 without any issues. Any ideas? @DarrenEastman / @ajwalker