these 2 derivations will be built:
  /nix/store/sdzzhybzgjd61x5n18j2hbq96fk3cxlj-driver-configuration.json.drv
  /nix/store/qa1b20sdnymhifiialc7ypz3swwbw6xi-test-driver.drv
building '/nix/store/sdzzhybzgjd61x5n18j2hbq96fk3cxlj-driver-configuration.json.drv'
driver-configuration.json> structuredAttrs is enabled
building '/nix/store/qa1b20sdnymhifiialc7ypz3swwbw6xi-test-driver.drv'
test-driver> structuredAttrs is enabled

upload niks3: ok