these 2 derivations will be built:
  /nix/store/bwbax9q9iqfja8djw5ay608xxqi9a95h-driver-configuration.json.drv
  /nix/store/1k33a4ydnrmrm2kqs940z0sg10va67jg-test-driver.drv
building '/nix/store/bwbax9q9iqfja8djw5ay608xxqi9a95h-driver-configuration.json.drv'
driver-configuration.json> structuredAttrs is enabled
building '/nix/store/1k33a4ydnrmrm2kqs940z0sg10va67jg-test-driver.drv'
test-driver> structuredAttrs is enabled

upload niks3: ok