these 6 derivations will be built:
  /nix/store/31nmri580nks4jdjak2w46a8wmw6gp1c-libguestfs-1.56.2.drv
  /nix/store/hc128s5gdfl0ik7xi8drjsmmk8w3vn79-guestfs-tools-1.52.3.drv
  /nix/store/838mag7i9r2djdcky9i23cn1ybxgbmgb-ubuntu-22.04-server-cloudimg-amd64.img-nix-vm-test.qcow2.drv
  /nix/store/322657dvh1xjipjqvwk8m5csz49h6kj6-run-vm-vm.drv
  /nix/store/ch7ci7a1qswdcwba2grzlkzamiivpmrs-driver-configuration.json.drv
  /nix/store/rq3nv8jid7iggylvlhljkpxprghxs4d1-test-driver.drv
building '/nix/store/838mag7i9r2djdcky9i23cn1ybxgbmgb-ubuntu-22.04-server-cloudimg-amd64.img-nix-vm-test.qcow2.drv'
ubuntu-22.04-server-cloudimg-amd64.img-nix-vm-test.qcow2> [   0.0] Examining the guest ...
ubuntu-22.04-server-cloudimg-amd64.img-nix-vm-test.qcow2> [   7.1] Setting a random seed
ubuntu-22.04-server-cloudimg-amd64.img-nix-vm-test.qcow2> virt-customize: warning: random seed could not be set for this type of 
ubuntu-22.04-server-cloudimg-amd64.img-nix-vm-test.qcow2> guest
ubuntu-22.04-server-cloudimg-amd64.img-nix-vm-test.qcow2> [   7.2] Setting the machine ID in /etc/machine-id
ubuntu-22.04-server-cloudimg-amd64.img-nix-vm-test.qcow2> [   7.2] Copying: backdoor.service to /etc/systemd/system
ubuntu-22.04-server-cloudimg-amd64.img-nix-vm-test.qcow2> [   7.2] Copying: mount-store.service to /etc/systemd/system
ubuntu-22.04-server-cloudimg-amd64.img-nix-vm-test.qcow2> [   7.2] Copying: resizeguest.service to /etc/systemd/system
ubuntu-22.04-server-cloudimg-amd64.img-nix-vm-test.qcow2> [   7.3] Running: /nix/store/gwc0ksfgmqhdr0xhwmyrs4sl5902vjpx-run-script
ubuntu-22.04-server-cloudimg-amd64.img-nix-vm-test.qcow2> [   7.5] SELinux relabelling
ubuntu-22.04-server-cloudimg-amd64.img-nix-vm-test.qcow2> [   7.6] Finishing off
building '/nix/store/322657dvh1xjipjqvwk8m5csz49h6kj6-run-vm-vm.drv'
run-vm-vm> structuredAttrs is enabled
building '/nix/store/ch7ci7a1qswdcwba2grzlkzamiivpmrs-driver-configuration.json.drv'
driver-configuration.json> structuredAttrs is enabled
building '/nix/store/rq3nv8jid7iggylvlhljkpxprghxs4d1-test-driver.drv'
test-driver> structuredAttrs is enabled

upload niks3: ok