Hi,
While running your changed tests, I think I found new failures. Being a bot and all I'm not very good at pattern recognition, so I might be wrong, but could you please double-check?
Full results can be found at: https://testbot.winehq.org/JobDetails.pl?Key=97470
Your paranoid android.
=== w864 (64 bit report) ===
robocopy.exe: robocopy.c:140: Test failed: mixed flags test 3: file "robocopy_destination\folderA\fileC.c" does not exist, but should exist