[Fastlane.Swift] When FastlaneRunner fails, the exit code is 0 instead of 1 #21849
Description
New Issue Checklist
- Updated fastlane to the latest version
- I read the Contribution Guidelines
- I read docs.fastlane.tools
- I searched for existing GitHub issues
Issue Description
When swift run fastlaneRunner lane [lane] fails with some error, the exit code is 0. This presents a serious issue when running on CI, as the job fails, but a pipeline doesn't stop. The solution would be to handle this in onError, but that's not possible when using Fastlane.swift via SPM. 😥 It is already resolved in this PR - #20563 - can we please merge it? 🙏 It's the only major issue preventing us from using Fastlane.swift in production.