these 4 derivations will be built:
  /nix/store/g26hjkdqvlm6ca41ck0q6p3ph4vgmlkl-ubuntu-26.04-server-cloudimg-amd64v3.img-nix-vm-test.qcow2.drv
  /nix/store/4hfv0knv97djf9z0xzn9briwq9h2vcs8-run-vm-vm.drv
  /nix/store/1hnpr2h8x6fwhjivrvsgh5pc5aqj0qdp-driver-configuration.json.drv
  /nix/store/ir4w0xs1xbal44amaihn04y3iqmnbhk9-test-driver.drv
building '/nix/store/g26hjkdqvlm6ca41ck0q6p3ph4vgmlkl-ubuntu-26.04-server-cloudimg-amd64v3.img-nix-vm-test.qcow2.drv'
ubuntu-26.04-server-cloudimg-amd64v3.img-nix-vm-test.qcow2> [   0.0] Examining the guest ...
ubuntu-26.04-server-cloudimg-amd64v3.img-nix-vm-test.qcow2> [  51.9] Setting a random seed
ubuntu-26.04-server-cloudimg-amd64v3.img-nix-vm-test.qcow2> virt-customize: warning: random seed could not be set for this type of 
ubuntu-26.04-server-cloudimg-amd64v3.img-nix-vm-test.qcow2> guest
ubuntu-26.04-server-cloudimg-amd64v3.img-nix-vm-test.qcow2> [  52.1] Setting the machine ID in /etc/machine-id
ubuntu-26.04-server-cloudimg-amd64v3.img-nix-vm-test.qcow2> [  52.1] Copying: backdoor.service to /etc/systemd/system
ubuntu-26.04-server-cloudimg-amd64v3.img-nix-vm-test.qcow2> [  52.1] Copying: mount-store.service to /etc/systemd/system
ubuntu-26.04-server-cloudimg-amd64v3.img-nix-vm-test.qcow2> [  52.2] Copying: resizeguest.service to /etc/systemd/system
ubuntu-26.04-server-cloudimg-amd64v3.img-nix-vm-test.qcow2> [  52.2] Running: /nix/store/ak16ynrwy8ri9gk46j5vpdyq319c6vi4-run-script
ubuntu-26.04-server-cloudimg-amd64v3.img-nix-vm-test.qcow2> [  55.5] SELinux relabelling
ubuntu-26.04-server-cloudimg-amd64v3.img-nix-vm-test.qcow2> [  56.2] Finishing off
building '/nix/store/4hfv0knv97djf9z0xzn9briwq9h2vcs8-run-vm-vm.drv'
building '/nix/store/1hnpr2h8x6fwhjivrvsgh5pc5aqj0qdp-driver-configuration.json.drv'
driver-configuration.json> structuredAttrs is enabled
building '/nix/store/ir4w0xs1xbal44amaihn04y3iqmnbhk9-test-driver.drv'

upload niks3: ok