these 4 derivations will be built:
  /nix/store/6ayclcdcn68j16x0dgfamlax2d4pyini-ubuntu-23.04-server-cloudimg-amd64.img-nix-vm-test.qcow2.drv
  /nix/store/60z772al5hxqdkgxjlq9v0m57gf6is5x-run-vm-vm.drv
  /nix/store/s5saxlfi8y5y398xhi57v0fzp9rgasq5-driver-configuration.json.drv
  /nix/store/m7cwgzff2qfrrph6xd0pcyasd7jhih7k-test-driver.drv
building '/nix/store/s5saxlfi8y5y398xhi57v0fzp9rgasq5-driver-configuration.json.drv'
driver-configuration.json> structuredAttrs is enabled
building '/nix/store/m7cwgzff2qfrrph6xd0pcyasd7jhih7k-test-driver.drv'

upload niks3: ok