these 4 derivations will be built:
  /nix/store/ny46k5ylmzh8hdhhirss8wkhyz085zq3-ubuntu-22.04-server-cloudimg-amd64.img-nix-vm-test.qcow2.drv
  /nix/store/j2f7i7ibpyw70klbkh8fr2b9d262kwa0-run-vm-vm.drv
  /nix/store/253i0x1z3ny6350djmkabd9ngpqhvm79-driver-configuration.json.drv
  /nix/store/x5f22xjanrwhgg7qmqidavbslgjrbkvr-test-driver.drv
building '/nix/store/253i0x1z3ny6350djmkabd9ngpqhvm79-driver-configuration.json.drv'
driver-configuration.json> structuredAttrs is enabled
building '/nix/store/x5f22xjanrwhgg7qmqidavbslgjrbkvr-test-driver.drv'
test-driver> structuredAttrs is enabled

upload niks3: ok