these 2 derivations will be built:
  /nix/store/1vd0g71n4bq2k5sky9gy3hvak28n6fp1-test-drv-canary-actual.drv
  /nix/store/9f51d7ak1rrns57rcaysz28mggmbb64k-test-drv-canary.drv
building '/nix/store/1vd0g71n4bq2k5sky9gy3hvak28n6fp1-test-drv-canary-actual.drv'
building '/nix/store/9f51d7ak1rrns57rcaysz28mggmbb64k-test-drv-canary.drv'

upload niks3: ok