> installer: Guest root shell did not produce any data yet...
       > installer:   To debug, enter the VM and run 'systemctl status backdoor.service'.
       > installer: Guest root shell did not produce any data yet...
       > installer:   To debug, enter the VM and run 'systemctl status backdoor.service'.
       > timeout reached; test terminating...
       > kill machine (pid 9)
       > qemu-system-x86_64: terminating on signal 15 from pid 6 (/nix/store/f8xmcwbyw8am8ybkdvzsj0ln6mlr559i-python3-3.13.11/bin/python3.13)
       > Terminated                 /nix/store/zmmp65xasqcz81x9rs5a17y070lk36ng-nixos-test-driver-installer-simpleUefiGrub/bin/nixos-test-driver -o $out
       For full logs, run:
         nix log /nix/store/kss02vdiapjh83czilwvg2m2x78smks2-vm-test-run-installer-simpleUefiGrub.drv