these 2 derivations will be built:
  /nix/store/9g7vv3wpkix222z7379r6i9bz3mkizac-test-drv-canary-actual.drv
  /nix/store/r76h519256rvlffkimkgrwhrbg5vr0ig-test-drv-canary.drv
building '/nix/store/9g7vv3wpkix222z7379r6i9bz3mkizac-test-drv-canary-actual.drv'
building '/nix/store/r76h519256rvlffkimkgrwhrbg5vr0ig-test-drv-canary.drv'

upload niks3: ok