these 2 derivations will be built:
  /nix/store/dys1ccqpp01br25n6ffq2a1d8v3l93lh-driver-configuration.json.drv
  /nix/store/8qnvk1yirirvdn0r5ghih3bac7ly6m1j-test-driver.drv
building '/nix/store/dys1ccqpp01br25n6ffq2a1d8v3l93lh-driver-configuration.json.drv'
driver-configuration.json> structuredAttrs is enabled
building '/nix/store/8qnvk1yirirvdn0r5ghih3bac7ly6m1j-test-driver.drv'
test-driver> structuredAttrs is enabled

upload niks3: ok