these 2 derivations will be built:
  /nix/store/pcssnsn4dr15bvrm800rjv5gscxgjcm7-test-drv-canary-actual.drv
  /nix/store/mpb26cgqafl0xhfqx6hxfjg84bg57vck-test-drv-canary.drv
building '/nix/store/pcssnsn4dr15bvrm800rjv5gscxgjcm7-test-drv-canary-actual.drv'
building '/nix/store/mpb26cgqafl0xhfqx6hxfjg84bg57vck-test-drv-canary.drv'

upload niks3: ok