these 2 derivations will be built:
  /nix/store/j4h39rbfr70261257dij8kki8mldnlgh-driver-configuration.json.drv
  /nix/store/l8malh4va4b0ajkn9lbgx4hqfj1lg7v1-test-driver.drv
building '/nix/store/j4h39rbfr70261257dij8kki8mldnlgh-driver-configuration.json.drv'
driver-configuration.json> structuredAttrs is enabled
building '/nix/store/l8malh4va4b0ajkn9lbgx4hqfj1lg7v1-test-driver.drv'
test-driver> structuredAttrs is enabled

upload niks3: ok