these 41 derivations will be built:
  /nix/store/4lzjhzzs7mgq0dffx1sziwv80hib8bab-nix.conf.drv
  /nix/store/7mpr557nhiva0ydf9nixq37aa4mry6rq-unit-nix-grpc-daemon.service.drv
  /nix/store/czm3lvw5varq9clz17awhs2l0y6xwxdf-X-Restart-Triggers-nix-daemon.drv
  /nix/store/bx1zy044c3wsjvsk5zha1fpwdkz10jbk-unit-nix-daemon.service.drv
  /nix/store/zfidbkx15iy2aysb60xkkh6s6a22m0i1-system-units.drv
  /nix/store/0gqwbr3h7p1vyhgikirgmr3zld5vdglb-etc.drv
  /nix/store/zw2fqahh7dggh8a3qbv37ca8n6vfy8sg-activate.drv
  /nix/store/4vkhnjk39sm0wnyd0cf4ljdcpydcmm0d-nixos-system-worker2-test.drv
  /nix/store/1xk80jlqb78q1ksizpq8kd9la62kl9s3-unit-nix-grpc-daemon.service.drv
  /nix/store/0ph9204pxlbv00qad5m6qazpcrd73b6i-system-units.drv
  /nix/store/d4p7w3ld5qh769pcg54z7mr21jnsanl1-etc.drv
  /nix/store/d0kqpbz8zn7hsc7318v4j9xayyvml7xx-activate.drv
  /nix/store/ipyxj7p7pm0pv0sxmcc96q0ms7s3kail-nixos-system-worker2-test.drv
  /nix/store/cknsfbh6cnxc7bzblyf22f5rh8887fbw-closure-info.drv
  /nix/store/ajhflr9jkmsr13rdhzg2x14jlqnr72wd-run-nixos-vm.drv
  /nix/store/6z7a948605df0va8h9dxczpfsi93618f-nixos-vm.drv
  /nix/store/pv8hdl9qw58rv5mqv3wnp2ycxqmi79c7-nix.conf.drv
  /nix/store/qhmvc376kdfavcrvrrlj7ig64af1sppl-X-Restart-Triggers-nix-daemon.drv
  /nix/store/ww1ypaqwdanvpiicw2836srbh7701ig6-unit-nix-daemon.service.drv
  /nix/store/5ck51ziw9w1qqzdqwfa6j19qw176c3cy-system-units.drv
  /nix/store/w49v7dn1sad9a3hwxh1q228bm1xibhwi-etc.drv
  /nix/store/ap5hwivsyb92hbp8llnfiam83nwyxiq6-activate.drv
  /nix/store/b5cl8qhcza6xk51vdq9qzq2vqcbm496h-nixos-system-client-test.drv
  /nix/store/4ybbsxxhd1g7xbkfmyz276rxs3cfkvik-closure-info.drv
  /nix/store/mrc8xbxskl0kxvn4sxz16ykn3hgnycah-run-nixos-vm.drv
  /nix/store/9h407f28zyw1bkghj88jpg75vylqwas3-nixos-vm.drv
  /nix/store/nd7yjiillz5my70lvcny5c2ki74g9ifh-nix.conf.drv
  /nix/store/wfank6bfxa6kqffgww534bqhpzlg37vq-X-Restart-Triggers-nix-daemon.drv
  /nix/store/1q2f6jm1d7pln0qbdr7k1rirjg5ilxcr-unit-nix-daemon.service.drv
  /nix/store/sbbqkk0mfp8l4zpdjd82awj0llrslrvw-unit-nix-grpc-daemon.service.drv
  /nix/store/5mwcif13nvyfydsradlj19fz9q29i0x0-system-units.drv
  /nix/store/yz130f05irh12glpa3sbx2fbilcq9l2z-etc.drv
  /nix/store/268lhp6akmm55lrm8d8q290254djazdj-activate.drv
  /nix/store/1ysv7q2b8cgf023kkwn9xp4s17qvc82g-nixos-system-worker1-test.drv
  /nix/store/p639pdd425pad6ckq6wbc6spjanh9a93-closure-info.drv
  /nix/store/rzg5nayhf365x9c3ripdhmzfgzazv162-run-nixos-vm.drv
  /nix/store/bhbq8csmjwkjmnmqnfdmsbr1rcviph7p-nixos-vm.drv
  /nix/store/y9iyqrqbmwm0fd05b2krvlf4b8m23pbb-test-script.drv
  /nix/store/nc7sgq1196mi00ih7kpdimsl6ssvq1l1-driverConfiguration.json.drv
  /nix/store/0agjr1xhjv913cv33ird381lp0km75k2-nixos-test-driver-nix-grpc-farm.drv
  /nix/store/xcgjkhgb5kqmdcwkyzfcymncq2rgpk61-vm-test-run-nix-grpc-farm.drv
error: Cannot build '/nix/store/xcgjkhgb5kqmdcwkyzfcymncq2rgpk61-vm-test-run-nix-grpc-farm.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/2h9443whp1h4xkm783shxzaswdmww2fj-vm-test-run-nix-grpc-farm
       Last 25 log lines:
       > subtest: build hook: nix-daemon with builders = grpc://lb
       > client: must succeed: NIX_REMOTE=daemon nix build --log-format internal-json --max-jobs 0 --builders 'grpc://lb:50051?restart-grace=30&ca-cert=/nix/store/hh35p8dmc1g9fk16aw3d6myi3l612ls9-farm-certs/ca.pem&client-cert=/nix/store/hh35p8dmc1g9fk16aw3d6myi3l612ls9-farm-certs/ci.pem&client-key=/nix/store/hh35p8dmc1g9fk16aw3d6myi3l612ls9-farm-certs/ci.key&system=x86_64-linux x86_64-linux - 4' --print-out-paths --no-link -f /nix/store/kh0qcgyv9dmrj3hks77rdgj728ar81vy-job.nix --argstr tag hook 2>/tmp/hook.log
       > client # [   53.432069] systemd[1]: Started Nix Daemon.
       > client # [   53.601480] nix-daemon[960]: accepted connection from pid 957, user root (trusted)
       > client: output:
       > !!! Test "build hook: nix-daemon with builders = grpc://lb" failed with error: "command `NIX_REMOTE=daemon nix build --log-format internal-json --max-jobs 0 --builders 'grpc://lb:50051?restart-grace=30&ca-cert=/nix/store/hh35p8dmc1g9fk16aw3d6myi3l612ls9-farm-certs/ca.pem&client-cert=/nix/store/hh35p8dmc1g9fk16aw3d6myi3l612ls9-farm-certs/ci.pem&client-key=/nix/store/hh35p8dmc1g9fk16aw3d6myi3l612ls9-farm-certs/ci.key&system=x86_64-linux x86_64-linux - 4' --print-out-paths --no-link -f /nix/store/kh0qcgyv9dmrj3hks77rdgj728ar81vy-job.nix --argstr tag hook 2>/tmp/hook.log` failed (exit code 1)"
       > !!! Traceback (most recent call last):
       > !!!   File "<string>", line 129, in <module>
       > !!!     out = client.succeed(f"NIX_REMOTE=daemon nix build --log-format internal-json {hook} --print-out-paths --no-link -f /nix/store/kh0qcgyv9dmrj3hks77rdgj728ar81vy-job.nix --argstr tag hook 2>/tmp/hook.log").strip()
       > !!! 
       > !!! RequestedAssertionFailed: command `NIX_REMOTE=daemon nix build --log-format internal-json --max-jobs 0 --builders 'grpc://lb:50051?restart-grace=30&ca-cert=/nix/store/hh35p8dmc1g9fk16aw3d6myi3l612ls9-farm-certs/ca.pem&client-cert=/nix/store/hh35p8dmc1g9fk16aw3d6myi3l612ls9-farm-certs/ci.pem&client-key=/nix/store/hh35p8dmc1g9fk16aw3d6myi3l612ls9-farm-certs/ci.key&system=x86_64-linux x86_64-linux - 4' --print-out-paths --no-link -f /nix/store/kh0qcgyv9dmrj3hks77rdgj728ar81vy-job.nix --argstr tag hook 2>/tmp/hook.log` failed (exit code 1)
       > cleanup
       > kill QemuMachine (pid 49)
       > client # qemu-system-x86_64: terminating on signal 15 from pid 39 (/nix/store/b5bpi6zfajzzrwwpgba2q6li3nnya4bs-python3-3.14.7/bin/python3.14)
       > kill QemuMachine (pid 50)
       > lb # qemu-system-x86_64: terminating on signal 15 from pid 39 (/nix/store/b5bpi6zfajzzrwwpgba2q6li3nnya4bs-python3-3.14.7/bin/python3.14)
       > kill QemuMachine (pid 51)
       > worker1 # qemu-system-x86_64: terminating on signal 15 from pid 39 (/nix/store/b5bpi6zfajzzrwwpgba2q6li3nnya4bs-python3-3.14.7/bin/python3.14)
       > kill QemuMachine (pid 52)
       > worker2 # qemu-system-x86_64: terminating on signal 15 from pid 39 (/nix/store/b5bpi6zfajzzrwwpgba2q6li3nnya4bs-python3-3.14.7/bin/python3.14)
       > (finished: cleanup, in 0.93 seconds)
       > 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
       For full logs, run:
         nix log /nix/store/xcgjkhgb5kqmdcwkyzfcymncq2rgpk61-vm-test-run-nix-grpc-farm.drv