The test was failing because TarOptions was using a non-pointer for ChownOpts, which meant the check for nil was never true, and createTarFile was never using the hdr.UID/GID Signed-off-by: Daniel Nephin <dnephin@docker.com> Upstream-commit: acdbc285e29ddd92e7a1cc99daf8b16502204d2e Component: engine