these 2 derivations will be built:
  /nix/store/q2xg0h1yqqv7rr00qhi5qi5a80xz38j1-driver-configuration.json.drv
  /nix/store/821xkx39ndpr5njsahri6vbklqg4n18r-test-driver.drv
building '/nix/store/q2xg0h1yqqv7rr00qhi5qi5a80xz38j1-driver-configuration.json.drv'
driver-configuration.json> structuredAttrs is enabled
building '/nix/store/821xkx39ndpr5njsahri6vbklqg4n18r-test-driver.drv'
test-driver> structuredAttrs is enabled

upload niks3: ok