these 4 derivations will be built:
  /nix/store/ij5wqvc81h73plq1j26ax6zm48dazz94-ubuntu-26.04-server-cloudimg-amd64v3.img-nix-vm-test.qcow2.drv
  /nix/store/cwfdmj2i2h65dfaqap7vd970ry42pnmx-run-vm-vm.drv
  /nix/store/yi0plhwns9h6ff7x59k0lbff17m4l6hc-driver-configuration.json.drv
  /nix/store/zpa0fqsiazg659w4pzafcl0zvxp8l7g0-test-driver.drv
building '/nix/store/ij5wqvc81h73plq1j26ax6zm48dazz94-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> [  25.7] 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> [  25.8] Setting the machine ID in /etc/machine-id
ubuntu-26.04-server-cloudimg-amd64v3.img-nix-vm-test.qcow2> [  25.8] Copying: backdoor.service to /etc/systemd/system
ubuntu-26.04-server-cloudimg-amd64v3.img-nix-vm-test.qcow2> [  26.0] Copying: mount-store.service to /etc/systemd/system
ubuntu-26.04-server-cloudimg-amd64v3.img-nix-vm-test.qcow2> [  26.0] Copying: resizeguest.service to /etc/systemd/system
ubuntu-26.04-server-cloudimg-amd64v3.img-nix-vm-test.qcow2> [  26.2] Running: /nix/store/79sj99idfnjraik226s1k4ixd2693qsd-run-script
ubuntu-26.04-server-cloudimg-amd64v3.img-nix-vm-test.qcow2> [  29.5] SELinux relabelling
ubuntu-26.04-server-cloudimg-amd64v3.img-nix-vm-test.qcow2> [  30.0] Finishing off
building '/nix/store/yi0plhwns9h6ff7x59k0lbff17m4l6hc-driver-configuration.json.drv'
driver-configuration.json> structuredAttrs is enabled
building '/nix/store/zpa0fqsiazg659w4pzafcl0zvxp8l7g0-test-driver.drv'
test-driver> structuredAttrs is enabled

upload niks3: ok