Same issue for me. But I have Xcode project with package.

me too

On a real device that will work fine. This is probably a bug of a simulator.

OK, finally I was able to fix it. The problem was that my mock server CLI tool is installing in ci_post_clone.sh. But tests are run afterwards on different machines, so it doesn't have this tool. Also, I didn't see any errors in logs, so I had to move it around a little bit. Long story short: I moved install step from ci_post_clone.sh to ci_pre_xcodebuild.sh to run installation step on every machine that run my UI tests.