I'm seeing this problem after upgrading to Xcode12, but it is intermittent. Duplicating all my bots as suggested in this related post did not work.
https://developer.apple.com/forums/thread/125500?login=true&page=1#639161022
Looking in the logs, it seems to be a timeout (30 seconds) in the command to copy the integration assets. I'm not sure where to override this timeout.
I tried suppressing the error in the build report, but the overall bot status still shows 'failed'. How can this be fixed? I'm pulling my hair out with frustration. I have post-build/test scripts that only run on 'bot success' and won't ever be called even though there are no build errors and all the tests pass.