these 4 derivations will be built:
  /nix/store/64gx13s8zgrq5yjxvilig9h4094jj1qi-test-script.drv
  /nix/store/rapy0zlnypn670x10vmx27zppv172mbi-driverConfiguration.json.drv
  /nix/store/nsfnd1ksz6pq25m0vdprvgj2h0f5x3kg-nixos-test-driver-disko-bcache-systemd-initrd.drv
  /nix/store/mzrx53csfja8w33lhgd7fr1x7gyqf67l-vm-test-run-disko-bcache-systemd-initrd.drv