these 26 derivations will be built:
  /nix/store/j6liz99jpvl7lzzml2q9bjnka03fszwb-tribuchet-attach.drv
  /nix/store/7y2sh31hg4m8wb2g6q3x908972fyqzqr-nix.conf.drv
  /nix/store/qsab443579qa0cbbz40rfj36z9chvlkg-X-Restart-Triggers-nix-daemon.drv
  /nix/store/8s52rds3i67apx3c7js6vk49zcd9wjby-unit-nix-daemon.service.drv
  /nix/store/z5r5qc2178pi17di2n7j8k1kp70iiyjd-unit-tribuchet-hub.service.drv
  /nix/store/vgdaxpxh4byqqchaa7w2f6nrmakr4hsy-system-units.drv
  /nix/store/zv4i7mvwmfg5h9xf49gf3d8hxwrccr3n-etc.drv
  /nix/store/8s0xpm4yczaxjnhllvdfwc1r4hyq72qz-activate.drv
  /nix/store/9qx13yws2zzplvlss3a8fcnczdf0842h-nixos-system-hub-test.drv
  /nix/store/ygvckrydqz76gnrycjq7g3a9fxz3h0pv-closure-info.drv
  /nix/store/02gl4qvdwzgb5nh7w32q959y5p8jay8q-run-nixos-vm.drv
  /nix/store/gxfcclqfii3bzmc7pcpgz7ivg4r7zl4l-tribuchet-agent.drv
  /nix/store/34qz4c5ps3jcsv7va0vn0izfd7k2x7wz-unit-tribuchet-agent-.service.drv
  /nix/store/likds6ivg3njkh36rqcwamd46ky2nyyl-unit-tribuchet-worker.service.drv
  /nix/store/lp833knz16cnz4drlhawgjp3q1dd14r3-system-units.drv
  /nix/store/4vs7pj2gpd95zbbqikps1xp0a7jh262n-etc.drv
  /nix/store/if3jfq0aivzql9asd18g6lnn6l9yi9pf-activate.drv
  /nix/store/ar323rbj4h2ry2xiv2z9vq9yyfpv4w1h-nixos-system-worker-test.drv
  /nix/store/plyrij9dir56i02z4m99f8hc784c11wx-closure-info.drv
  /nix/store/wfkj9ad2nwrw39ydadkxsh2a4pp871xg-closure-info.drv
  /nix/store/902mkv2211xqa97xfyy0l8xaw9gqb1lr-run-nixos-vm.drv
  /nix/store/a8058skwj2dbd577pnbnjhkk7lich1nz-nixos-vm.drv
  /nix/store/bva1rkg3ia17klsb3l6af9bsfqlbdqpa-nixos-vm.drv
  /nix/store/y5l87l1jqp5pkpgcnmqs45cpvxyp4my6-driverConfiguration.json.drv
  /nix/store/bp4wgd7d538ghcj8jrscfmkalkgg9i14-nixos-test-driver-tribuchet-tailscale.drv
  /nix/store/nifb1hizva5gy7wp7f76vb5z91y7fxaa-vm-test-run-tribuchet-tailscale.drv
error: Cannot build '/nix/store/nifb1hizva5gy7wp7f76vb5z91y7fxaa-vm-test-run-tribuchet-tailscale.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/nmvi778ihhdf8py2wncpmd217rhp1df9-vm-test-run-tribuchet-tailscale
       Last 25 log lines:
       > worker # [   23.977313] tribuchet[988]: 2026-08-14T11:34:37.847700Z  INFO tribuchet::worker::resume: build result sent, awaiting ack id="325dcfb6b1989c8c8e161b78e4b14e4b"
       > hub # tribuchet worker error: binding /nix/store/1zpz45w7k0i1j6b4m2z1cc12kbnv1m6y-libidn2-2.3.8: No such file or directory (os error 2)
       > worker # [   23.996175] tribuchet[988]: 2026-08-14T11:34:37.866915Z  INFO tribuchet::worker::resume: build result acknowledged id="325dcfb6b1989c8c8e161b78e4b14e4b"
       > hub # error: Cannot build '/nix/store/ram7vwkcrvkgfhwdk4y68xb79mzd1xmq-tt-tailscale.drv'.
       > hub #        Reason: builder failed with exit code 121.
       > hub #        Output paths:
       > hub #          /nix/store/9qvl9jmir81qmjij0p48h26vmh4cnwws-tt-tailscale
       > worker # [   24.028399] tailscaled[606]: magicsock: disco: node [1mA9d] d:73f7596eb4d5e273 now using 192.168.1.1:41641 mtu=1360 tx=b1b960eac2f7
       > hub: output:
       > !!! Test "a build dispatches over the tailnet" failed with error: "command `nix-build /root/test.nix --no-out-link` failed (exit code 100)"
       > !!! Traceback (most recent call last):
       > !!!   File "<string>", line 50, in <module>
       > !!!     out = hub.succeed("nix-build /root/test.nix --no-out-link").strip()
       > !!! 
       > !!! RequestedAssertionFailed: command `nix-build /root/test.nix --no-out-link` failed (exit code 100)
       > cleanup
       > kill QemuMachine (pid 47)
       > hub # qemu-system-x86_64: terminating on signal 15 from pid 39 (/nix/store/rgnappqqc5vbq60gza5fflyk84sylwl6-python3-3.14.6/bin/python3.14)
       > kill QemuMachine (pid 48)
       > worker # qemu-system-x86_64: terminating on signal 15 from pid 39 (/nix/store/rgnappqqc5vbq60gza5fflyk84sylwl6-python3-3.14.6/bin/python3.14)
       > (finished: cleanup, in 0.37 seconds)
       > additionally exposed symbols:
       >     hub, worker,
       >     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/nifb1hizva5gy7wp7f76vb5z91y7fxaa-vm-test-run-tribuchet-tailscale.drv