anchor.diff:  
       sub ensureNoPartition {
         $machine->succeed("test ! -e /dev/$_[0]");
  +    }
  +
  +    sub ensureMountPoint {
  +      $machine->succeed("mountpoint $_[0]");
       }
   
       sub remount_and_check {
  
positive.code:         }
          # Try to remount with nixpart
          $machine->succeed("nixpart -vm /kickstart");
          # Check if our beloved canaries are dead
          chomp $canaries;
          $machine->nest("Checking canaries:", sub {
  
negative.code:       ensureNoPartition("vdc4");
        ensureNoPartition("md2");
        remount_and_check;
        ensureMountPoint("/mnt/boot");
      };
  
      parttest "RAID1 with LUKS and LVM", sub {
  