these 16 derivations will be built:
  /nix/store/l3g4j8q5yvlnpq8x7jv89ik2qcnrzq40-system-path.drv
  /nix/store/fwsazpbdszr70rplikqlqfsaw70bhbp1-dbus-1.drv
  /nix/store/p41181ll0vi3nkyy08rf0np5a1rgmi0n-X-Restart-Triggers-dbus-broker.drv
  /nix/store/01xkh8x721yz7mc8w0aby5hzdfhlrdn7-unit-dbus-broker.service.drv
  /nix/store/8wh1h6prb1gszfj91323argqd86l5yy9-unit-dbus-broker.service.drv
  /nix/store/8hf6lnvv48hfanwy5drdasrda48fk464-system-units.drv
  /nix/store/lphgl9ghhlc2ykwbxfgdj9qx5lpx4hxq-user-units.drv
  /nix/store/iqlrdan38nz478539p5j9pyjzaqf917a-etc.drv
  /nix/store/cyx8ga3ahaxgq66jxplxj4nq4yfa7rfl-activate.drv
  /nix/store/d7fgx2d3cnn8hzmqyk06p2jbwhhx29b0-nixos-system-server-test.drv
  /nix/store/krzqnfd3600nwq2yxi3yi3bsw29jv01v-closure-info.drv
  /nix/store/vbq9ymc86b42frzgg1mj4wv885jfhcyd-run-nixos-vm.drv
  /nix/store/68rssrhpvm8dxj084n700xwhbfh9dgzb-nixos-vm.drv
  /nix/store/mqb0zqsnm0jzn376m067llwciqbm4dmd-driverConfiguration.json.drv
  /nix/store/f7cly17hzlayvsbrilgparvgrphssyxp-nixos-test-driver-docker.drv
  /nix/store/qhg04yciqbjlyyldm1jd8n193smsjmja-vm-test-run-docker.drv
error: Cannot build '/nix/store/qhg04yciqbjlyyldm1jd8n193smsjmja-vm-test-run-docker.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/yd6lp1qvhds6fh2h2m2pa28rkbsci15z-vm-test-run-docker
       Last 25 log lines:
       > server # [   23.914628] systemd[1]: Startup finished in 944ms (kernel) + 4.453s (initrd) + 18.513s (userspace) = 23.911s.
       > server: (finished: waiting for unit docker-busybox.service, in 24.89 seconds)
       > server: must succeed: cntr attach busybox true
       > server # [   24.102817] systemd[1]: tmp-containerd\x2dmount2384708849.mount: Deactivated successfully.
       > server # [   24.191368] systemd[1]: Created slice Virtual Machine and Container Slice.
       > server # [   24.197273] systemd[1]: Starting Virtual Machine and Container Registration Service...
       > server # [   24.275150] systemd[1]: Started Virtual Machine and Container Registration Service.
       > server # failed to attach to container 'busybox': failed to lookup container 'busybox': failed to find container 'busybox' - tried the following runtimes:
       > server #   - ProcessId: 'busybox' is not a valid PID (process ID): invalid digit found in string
       > server #   - Docker: docker inspect --format {{.State.Running}};{{.State.Pid}} busybox failed (exit status exit status: 1): error: no such object: busybox
       > server #   - Nspawn: machinectl show failed (exit status exit status: 1): Could not get path to machine: No machine 'busybox' known
       > server: output:
       > !!! Traceback (most recent call last):
       > !!!   File "<string>", line 3, in <module>
       > !!!     server.succeed("cntr attach busybox true")
       > !!! 
       > !!! RequestedAssertionFailed: command `cntr attach busybox true` failed (exit code 1)
       > cleanup
       > kill QemuMachine (pid 13)
       > server # qemu-system-x86_64: terminating on signal 15 from pid 6 (/nix/store/0r6k8xa2kgqyp3r4v2w7yrb80ma2iawm-python3-3.13.12/bin/python3.13)
       > (finished: cleanup, in 0.19 seconds)
       > additionally exposed symbols:
       >     server,
       >     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/qhg04yciqbjlyyldm1jd8n193smsjmja-vm-test-run-docker.drv