CONTEXT: [env_single_windows] valid environment with single windows mounted
RETCODE=0
STDOUT:
=======
> BACKUP /mnt/win/Windows/System32/config/SYSTEM to /var/backup/bt-dualboot/SYSTEM-2020-12-24--20-30-00

Syncing...
==========
 [B8:94:A5:FD:F1:0A] DEV-2-02-Name
 [C2:9E:1D:E2:3D:A5] DEV-1-03-Name
...done

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STDERR:
=======

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