these 13 derivations will be built:
  /nix/store/ngl5j08dkbf4vllxkkf3pgihfkvdfcih-unit-fast-nix-optimise.service.drv
  /nix/store/p1af2rjpd77kizdb5sxj00bx34k23kq4-unit-fast-nix-gc.service.drv
  /nix/store/1jfj7jpky4cl461a9f456vfgdrqcvrcp-system-units.drv
  /nix/store/5qps9har515jqcjiqv0kfzv3ydsnv4sh-etc.drv
  /nix/store/0aw2mmn8m353wkq9ccb4ya0n30samahn-activate.drv
  /nix/store/gnj40f89ymsn2vp8fvvk0xfgj2y7lpf0-nixos-system-machine-test.drv
  /nix/store/bhkvvr4lm4g9hx6mi20mmn0rph7pdjb3-closure-info.drv
  /nix/store/hiifinj1fapdnd5w3npll49hivyjxb40-closure-info.drv
  /nix/store/zbzmrv7jq1r6zxnk1lm102zpwnwwqa97-run-nixos-vm.drv
  /nix/store/rkg5fx5mqg3g81fw89rwx4xb413gvgd5-nixos-vm.drv
  /nix/store/ax80ln641pwyasg3b39q5kr21h23hpp6-driverConfiguration.json.drv
  /nix/store/83912wz6k7c4qgnjmypjnsppgrqgcshm-nixos-test-driver-fast-nix-gc.drv
  /nix/store/al7dqdms6mvxwa3pw5s5k7h99hp5ls9b-vm-test-run-fast-nix-gc.drv
Failed to find a machine for remote build!
derivation: al7dqdms6mvxwa3pw5s5k7h99hp5ls9b-vm-test-run-fast-nix-gc.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/al7dqdms6mvxwa3pw5s5k7h99hp5ls9b-vm-test-run-fast-nix-gc.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/ik741kvpmr0d1x0qi4x7jy13li4zwjx8-vm-test-run-fast-nix-gc
       Last 25 log lines:
       > machine # [   31.544359] fast-nix-gc[1084]: [WARN ] failed to delete /nix/store/jzi875n1g80v1dn1md37qpy55dc3vphs-ca-test2: removing /nix/store/jzi875n1g80v1dn1md37qpy55dc3vphs-ca-test2: Read-only file system (os error 30)
       > machine # [   31.550539] fast-nix-gc[1084]: [WARN ] failed to delete /nix/store/l8ix30c93w1d6iwl3z5svdafw892fas7-ca-test2.drv: removing /nix/store/l8ix30c93w1d6iwl3z5svdafw892fas7-ca-test2.drv: Read-only file system (os error 30)
       > machine # [   31.560168] fast-nix-gc[1084]: [WARN ] failed to delete /nix/store/517d5wdijgkaayhws2blgl8n0dxwz9d9-ca-test: removing /nix/store/517d5wdijgkaayhws2blgl8n0dxwz9d9-ca-test: Read-only file system (os error 30)
       > machine # [   31.563315] fast-nix-gc[1084]: [WARN ] failed to delete /nix/store/0sph6395ll03wld7nhrsdzlp7q93b0m5-ca-test.drv: removing /nix/store/0sph6395ll03wld7nhrsdzlp7q93b0m5-ca-test.drv: Read-only file system (os error 30)
       > machine: (finished: waiting for failure: systemctl is-active fast-nix-gc.service, in 0.08 seconds)
       > machine: must succeed: test -e /nix/store/c9l810y1svb63dbj77ga83cvakglv6p0-saved
       > machine # [   31.574467] fast-nix-gc[1084]: [INFO ] deleting unused links...
       > machine # [   31.578236] fast-nix-gc[1084]: 13 store paths deleted, 20.43 MiB freed
       > machine # [   31.579622] systemd[1]: fast-nix-gc.service: Deactivated successfully.
       > machine # [   31.583888] systemd[1]: Finished Fast Nix Garbage Collector.
       > machine: (finished: must succeed: test -e /nix/store/c9l810y1svb63dbj77ga83cvakglv6p0-saved, in 0.01 seconds)
       > machine: must fail: test -e /nix/store/1x6909zm53al5lz9j5wyq9c93xbkz5f6-other
       > !!! Traceback (most recent call last):
       > !!!   File "<string>", line 164, in <module>
       > !!!     machine.fail(f"test -e {other}")
       > !!! 
       > !!! RequestedAssertionFailed: command `test -e /nix/store/1x6909zm53al5lz9j5wyq9c93xbkz5f6-other` unexpectedly succeeded
       > cleanup
       > kill QemuMachine (pid 45)
       > machine # qemu-system-aarch64: terminating on signal 15 from pid 39 (/nix/store/sfbjq7mllid60l3jvxw0q2gknqldyy2l-python3-3.14.6/bin/python3.14)
       > (finished: cleanup, in 0.23 seconds)
       > additionally exposed symbols:
       >     machine,
       >     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/al7dqdms6mvxwa3pw5s5k7h99hp5ls9b-vm-test-run-fast-nix-gc.drv