these 2 derivations will be built:
  /nix/store/h6g68k7vivnh4pahwm81ay9mwcb8ra7h-test-drv-canary-actual.drv
  /nix/store/ik8hgrzmyw9r2m7mwcx8nldkvgds9qvx-test-drv-canary.drv
building '/nix/store/h6g68k7vivnh4pahwm81ay9mwcb8ra7h-test-drv-canary-actual.drv'
building '/nix/store/ik8hgrzmyw9r2m7mwcx8nldkvgds9qvx-test-drv-canary.drv'

upload niks3: ok