After upgrading to Xcode 12.4, the build jobs have stopped working for me. My only clue is that the new version uses parallel builds and the main process is probably replaced by other child processes and therefore the job always fails unexpectedly shortly after it’s started without any error messages whatsoever! Here’s as far as it gets:
$ xcodebuild -scheme MyLibrary -destination generic/platform=tvOS -allowProvisioningUpdates clean analyze Command line invocation: /Applications/Xcode.app/Contents/Developer/usr/bin/xcodebuild -scheme MyLibrary -destination generic/platform=tvOS -allowProvisioningUpdates clean analyze 2021-03-12 01:18:29.252 xcodebuild[5978:97561] CFURLRequestSetHTTPCookieStorageAcceptPolicy_block_invoke: no longer implemented and should not be called Resolve Package Graph Resolved source packages: MyLibrary: /usr/local/bin/builds/17a6bd1d/0/my-library Alamofire: https://github.com/Alamofire/Alamofire @ 5.4.1 DataCompression: https://github.com/mw99/DataCompression @ 3.6.0 SwiftyJSON: https://github.com/SwiftyJSON/SwiftyJSON @ 5.0.0 Siesta: https://github.com/bustoutsolutions/siesta @ 1.5.2 note: Using new build system note: Building targets in parallel
This works perfectly on my local machine as well as on the same machine GitLab Runner executes it.