this derivation will be built:
  /nix/store/42772m3xf7xhaic5f07bxhccdmj9d9kx-vm-test-run-systemd-shutdown.drv
error: Cannot build '/nix/store/42772m3xf7xhaic5f07bxhccdmj9d9kx-vm-test-run-systemd-shutdown.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/g7swpk35r5dqxsjxz2pgvgisrh4h85kc-vm-test-run-systemd-shutdown
       Last 25 log lines:
       > machine # [   13.946401] shutdown[1]: Detaching DM devices.
       > machine # [   13.947208] shutdown[1]: All DM devices detached.
       > machine # [   13.948059] shutdown[1]: All filesystems, swaps, loop devices, MD devices and DM devices detached.
       > machine # [   13.951556] shutdown[1]: Syncing filesystems and block devices.
       > machine # [   13.952931] shutdown[1]: Powering off.
       > machine # [   13.963949] ACPI: PM: Preparing to enter system sleep state S5
       > machine # [   13.964914] kvm: exiting hardware virtualization
       > machine # [   13.965553] reboot: Power down
       > machine # [2026-10-20T03:18:07Z INFO  virtiofsd] Client disconnected, shutting down
       > machine # [2026-10-20T03:18:07Z INFO  virtiofsd] Client disconnected, shutting down
       > machine # [2026-10-20T03:18:07Z INFO  virtiofsd] Client disconnected, shutting down
       > machine: (finished: waiting for Unmounting '/oldroot' to appear on console, in 1.02 seconds)
       > machine: waiting for Shutting down NixOS to appear on console
       > !!! Traceback (most recent call last):
       > !!!   File "<string>", line 10, in <module>
       > !!!     machine.wait_for_console_text("Shutting down NixOS", timeout=dt.timedelta(seconds=5))
       > !!! 
       > !!! RequestedAssertionFailed: action timed out after 5.00 seconds (timeout=5.0)
       > cleanup
       > kill QemuMachine (pid 45)
       > (finished: cleanup, in 0.00 seconds)
       > additionally exposed symbols:
       >     machine,
       >     vlan1,
       >     start_all, test_script, machines, machines_qemu, machines_nspawn, vlans, driver, log, os, create_machine, subtest, run_tests, join_all, retry, serial_stdout_off, serial_stdout_on, polling_condition, BaseMachine, QemuMachine, NspawnMachine, t, debug, dump_machine_ssh
       For full logs, run:
         nix log /nix/store/42772m3xf7xhaic5f07bxhccdmj9d9kx-vm-test-run-systemd-shutdown.drv