these 40 derivations will be built:
  /nix/store/x0828qadwm4gska118bsihwzsddzqzqb-nix.conf.drv
  /nix/store/8pzax24bph9gpcsqx676kf44h08yg09w-X-Restart-Triggers-nix-daemon.drv
  /nix/store/0n5l50pa5pqqhrm8hy4h9z6ra5js7smh-unit-nix-daemon.service.drv
  /nix/store/hy14cair0syy1gbcmasymwz4a73snbai-nix.conf.drv
  /nix/store/9m7wqm5nn8d3vfalfjphr0w5fik2lsdq-unit-nix-grpc-daemon.service.drv
  /nix/store/dsnkdj7jghpi2yrxlfns6747y9f5pfmd-X-Restart-Triggers-nix-daemon.drv
  /nix/store/vwwwzfrpjfpd5bpswkrp82bvi8m1jr9c-unit-nix-daemon.service.drv
  /nix/store/xsj72f9n904jbxhfwgjhdxmhxb48zmdg-system-units.drv
  /nix/store/qy596f4wpjfvzbi8m76p0dh36i54r2mg-etc.drv
  /nix/store/kmsn4506ky51fbjh3pnsazzi6kv7fgvv-activate.drv
  /nix/store/6kbcc21jzr7971hhmhhnscb64dvjig28-nixos-system-worker1-test.drv
  /nix/store/sgx2c89p9sijydx571ylg73rq4d57z0r-closure-info.drv
  /nix/store/0s7qz1drlsmvqfa5c6mi2s4frqf3fyzm-run-nixos-vm.drv
  /nix/store/nyc6yh5zbjm8xp90d04jl4y9sh6ar7b4-nixos-vm.drv
  /nix/store/fr412wc7xk6s5pryjx1fd9vxiyn205p0-nix.conf.drv
  /nix/store/1v05ml311h88p03l0v7vmwzdryxhwmgb-X-Restart-Triggers-nix-daemon.drv
  /nix/store/brhs0nyg71slyr03ijv849fzqgfdan74-unit-nix-daemon.service.drv
  /nix/store/kir7jnk5zli1wk9sy7la27klbz1i03b9-unit-nix-grpc-daemon.service.drv
  /nix/store/686c0g7kvgy1rbb2jjhz6i4c9zcswsqc-system-units.drv
  /nix/store/l3y8s3gflwg92v15s6bx0k6jzymwrbsl-etc.drv
  /nix/store/2h9mkhgrq9qqdsb4fvl91xpgf9ab0ca5-activate.drv
  /nix/store/drw7nw24kn44a6f2339q1l2fqrwb8sx5-unit-nix-grpc-daemon.service.drv
  /nix/store/x10zbq3gdrqs80l9aafgl0lp92kgn2h6-system-units.drv
  /nix/store/1ybvis57nl33n2h5wh3z2z6r3b6rrhr4-etc.drv
  /nix/store/yn88aksp9n8xv3v95bqw7yji13hdvkgy-activate.drv
  /nix/store/x7m9zvn0df4slamns0drw03vw8q288mp-nixos-system-worker2-test.drv
  /nix/store/d8p4q2y4bay5p0c8vg6rzpi1fdk265im-nixos-system-worker2-test.drv
  /nix/store/4gbfhiml8d1qm87k7xnniqw31mja742x-closure-info.drv
  /nix/store/37skjg6qlbq2az5xhdqzyphajzrv79i2-run-nixos-vm.drv
  /nix/store/s1c7szg7xf6xim3hxn7lm2rkwmci1va0-nixos-vm.drv
  /nix/store/mxd4mpdi9mrmsmlgchsmihklpd960nzm-system-units.drv
  /nix/store/7hac9x458r80wi6x74q2id96shcz7ml0-etc.drv
  /nix/store/pv088klbb33qx4cfss1pp68ziwxrn86l-activate.drv
  /nix/store/kk9bmxbyy6s7xym8vjm3cc586gzshqgv-nixos-system-client-test.drv
  /nix/store/n577bnzxw1fwvnff2x5ynlz97zhvz314-closure-info.drv
  /nix/store/pz4gf4r569fznkhbkkqz4sd2l8jzab1i-run-nixos-vm.drv
  /nix/store/s78fvr6d00fasvawnr43lrqmrxy041pp-nixos-vm.drv
  /nix/store/41xd16y1y8fw4kpj7whlzhs9pfrwa1gh-driverConfiguration.json.drv
  /nix/store/1absk6f6af6wxjh12j3np35g0aqy1ffc-nixos-test-driver-nix-grpc-farm.drv
  /nix/store/3gh7xnk18k6y28q7jv8f6p5gf40kv5bc-vm-test-run-nix-grpc-farm.drv
error: Cannot build '/nix/store/3gh7xnk18k6y28q7jv8f6p5gf40kv5bc-vm-test-run-nix-grpc-farm.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/mbvanp8bm3z6c2770v9wwhfg908a01l9-vm-test-run-nix-grpc-farm
       Last 25 log lines:
       >     worker1:  ssh -o User=root vsock-mux//build/tmpadyj3b87/worker1_host.socket
       >     worker2:  ssh -o User=root vsock-mux//build/tmpadyj3b87/worker2_host.socket
       > additionally exposed symbols:
       >     client, lb, worker1, worker2,
       >     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
       > Traceback (most recent call last):
       >   File "/nix/store/81dgbf2d9k9llajgi9597ahypdjn5iam-nixos-test-driver-1.1/bin/.nixos-test-driver-wrapped", line 9, in <module>
       >     sys.exit(main())
       >              ~~~~^^
       >   File "/nix/store/81dgbf2d9k9llajgi9597ahypdjn5iam-nixos-test-driver-1.1/lib/python3.14/site-packages/test_driver/__init__.py", line 195, in main
       >     driver.run_tests()
       >     ~~~~~~~~~~~~~~~~^^
       >   File "/nix/store/81dgbf2d9k9llajgi9597ahypdjn5iam-nixos-test-driver-1.1/lib/python3.14/site-packages/test_driver/driver.py", line 442, in run_tests
       >     self.test_script()
       >     ~~~~~~~~~~~~~~~~^^
       >   File "/nix/store/81dgbf2d9k9llajgi9597ahypdjn5iam-nixos-test-driver-1.1/lib/python3.14/site-packages/test_driver/driver.py", line 400, in test_script
       >     exec(self.tests, symbols, None)
       >     ~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^
       >   File "<string>", line 51, in <module>
       >   File "<string>", line 10, in run_e2e
       >   File "/nix/store/lq2fsnmg0q3y0vlxn91w8s8wvj1m6fld-python3-3.14.8/lib/python3.14/subprocess.py", line 578, in run
       >     raise CalledProcessError(retcode, process.args,
       >                              output=stdout, stderr=stderr)
       > subprocess.CalledProcessError: Command '['/nix/store/ccsm91v1vv736ii4fxjwscq7zq9yxmd7-nix-grpc-e2e/bin/nix-grpc-e2e', 'farm::serial::', '--test-threads=1', '--nocapture']' returned non-zero exit status 101.
       For full logs, run:
         nix log /nix/store/3gh7xnk18k6y28q7jv8f6p5gf40kv5bc-vm-test-run-nix-grpc-farm.drv