Merge "Give a warning to use --copy-out" am: ca84c4bb2f am: f1970ff373 am: 3f0e12a85f

Original change: https://android-review.googlesource.com/c/platform/development/+/1486487

Change-Id: I8c91836bb0617c88fc8a24ad2bf58f9b4cd5fcf2