these 13 derivations will be built:
  /nix/store/j9c9w44xf49b0ssimlbzfmbgycx2vbrc-envoy.json.drv
  /nix/store/x8qbwrh3dpdja3306pkv3snxq45yz2sv-validate-envoy-conf.drv
  /nix/store/glyi6xj54g9m6v9zchp8l4xhmy70pflz-unit-envoy.service.drv
  /nix/store/y4fsqgzj5igarzvd38p9ws8bnxkbkdcv-system-units.drv
  /nix/store/4haa7didfp6y7csq4y5qmp0vgsafs9z4-etc.drv
  /nix/store/a6gcpv8l6amc2wmzkamkp7x4snpjj45j-activate.drv
  /nix/store/vrz0ylg4ba3nfhsk0n14pinahr6sl6s2-nixos-system-lb-test.drv
  /nix/store/llm2p4nfrwwch4dy498divkz7faayy3d-closure-info.drv
  /nix/store/ikszimlcyzi926rilbdgh20iqj6gfwfr-run-nixos-vm.drv
  /nix/store/42cm5zjywmgm5qcbjngyl7w6lvapspzm-nixos-vm.drv
  /nix/store/fkrmng60dhxz6i557qkmifykbsgbhzgi-driverConfiguration.json.drv
  /nix/store/1wr787n3j5wh0fbjgjd86ppcsvzlz8fl-nixos-test-driver-nix-grpc-farm.drv
  /nix/store/0h3kmbs4x5symny1b95zhk7a0wpm50w1-vm-test-run-nix-grpc-farm.drv
Failed to find a machine for remote build!
derivation: x8qbwrh3dpdja3306pkv3snxq45yz2sv-validate-envoy-conf.drv
required (system, features): (aarch64-linux, [])
1 available machines:
(systems, maxjobs, supportedFeatures, mandatoryFeatures)
([aarch64-darwin, x86_64-darwin], 8, [big-parallel, recursive-nix], [])
Failed to find a machine for remote build!
derivation: 0h3kmbs4x5symny1b95zhk7a0wpm50w1-vm-test-run-nix-grpc-farm.drv
required (system, features): (aarch64-linux, [kvm, nixos-test])
1 available machines:
(systems, maxjobs, supportedFeatures, mandatoryFeatures)
([aarch64-darwin, x86_64-darwin], 8, [big-parallel, recursive-nix], [])
error: Cannot build '/nix/store/0h3kmbs4x5symny1b95zhk7a0wpm50w1-vm-test-run-nix-grpc-farm.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/w33v35bjwvxax1dsppaylxhgqygb0zxf-vm-test-run-nix-grpc-farm
       Last 25 log lines:
       >
       > !!! Test "build hook: nix-daemon with builders = grpc://lb" failed with error: "command `nix build -L --max-jobs 0 --builders 'grpc://lb:50051?ca-cert=/nix/store/nxjidxgil6j96kna91adfd01y2hhlm82-farm-certs/ca.pem&client-cert=/nix/store/nxjidxgil6j96kna91adfd01y2hhlm82-farm-certs/ci.pem&client-key=/nix/store/nxjidxgil6j96kna91adfd01y2hhlm82-farm-certs/ci.key - - 4' --print-out-paths --no-link -f /nix/store/m74lzh91imw61a3ikc44dryv0fl01505-job.nix --argstr tag hook 2>&1 | tee /dev/stderr | tail -1` failed (exit code 1)"
       > !!! Traceback (most recent call last):
       > !!!   File "<string>", line 59, in <module>
       > !!!     out = client.succeed(f"nix build -L --max-jobs 0 --builders '{envoy} - - 4' --print-out-paths --no-link -f /nix/store/m74lzh91imw61a3ikc44dryv0fl01505-job.nix --argstr tag hook 2>&1 | tee /dev/stderr | tail -1").strip()
       > !!! 
       > !!! RequestedAssertionFailed: command `nix build -L --max-jobs 0 --builders 'grpc://lb:50051?ca-cert=/nix/store/nxjidxgil6j96kna91adfd01y2hhlm82-farm-certs/ca.pem&client-cert=/nix/store/nxjidxgil6j96kna91adfd01y2hhlm82-farm-certs/ci.pem&client-key=/nix/store/nxjidxgil6j96kna91adfd01y2hhlm82-farm-certs/ci.key - - 4' --print-out-paths --no-link -f /nix/store/m74lzh91imw61a3ikc44dryv0fl01505-job.nix --argstr tag hook 2>&1 | tee /dev/stderr | tail -1` failed (exit code 1)
       > cleanup
       > kill QemuMachine (pid 51)
       > cache # qemu-system-aarch64: terminating on signal 15 from pid 39 (/nix/store/lfh101cfjj8p8npcari9hk0lbqi33yvh-python3-3.14.7/bin/python3.14)
       > kill QemuMachine (pid 50)
       > client # qemu-system-aarch64: terminating on signal 15 from pid 39 (/nix/store/lfh101cfjj8p8npcari9hk0lbqi33yvh-python3-3.14.7/bin/python3.14)
       > worker2 # [   52.989138] nix-daemon[785]: accepted connection from pid 847, user nix-grpc-daemon
       > worker2 # [   53.005517] nix-daemon[785]: reaped child process 850, status = succeeded
       > kill QemuMachine (pid 52)
       > lb # qemu-system-aarch64: terminating on signal 15 from pid 39 (/nix/store/lfh101cfjj8p8npcari9hk0lbqi33yvh-python3-3.14.7/bin/python3.14)
       > kill QemuMachine (pid 53)
       > worker1 # qemu-system-aarch64: terminating on signal 15 from pid 39 (/nix/store/lfh101cfjj8p8npcari9hk0lbqi33yvh-python3-3.14.7/bin/python3.14)
       > kill QemuMachine (pid 54)
       > worker2 # qemu-system-aarch64: terminating on signal 15 from pid 39 (/nix/store/lfh101cfjj8p8npcari9hk0lbqi33yvh-python3-3.14.7/bin/python3.14)
       > (finished: cleanup, in 1.03 seconds)
       > additionally exposed symbols:
       >     cache, 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/0h3kmbs4x5symny1b95zhk7a0wpm50w1-vm-test-run-nix-grpc-farm.drv