1these 10 derivations will be built:2 /nix/store/di5z6bmf5nwn5532wr6kla88xywbh1fa-system-units.drv3 /nix/store/nqjj1c8j3v7smxy4312p6qxniz826gdn-etc.drv4 /nix/store/ljp764xckhbg4smsvpbavcycw5ig3ylr-activate.drv5 /nix/store/q3k4vkc8r109clzkzz6dk9sb2zlx6wls-nixos-system-machine-test.drv6 /nix/store/iiys8invlawbqs2nj9l50wq76gnv0xw4-closure-info.drv7 /nix/store/ji445r1ayc9rdgka3vj30hqbjz6fjfkx-run-nixos-vm.drv8 /nix/store/hrl2v8vdshczamnmswmnih8ya73c7c8f-nixos-vm.drv9 /nix/store/wj8glhq26j0x68ffiiz5vbza2y37r8m7-driverConfiguration.json.drv10 /nix/store/zciq861vnwa73v1lsq1kh018xp0r1m0n-nixos-test-driver-systemd-nsresourced-mountfsd.drv11 /nix/store/pf6rsjcj61n5d0q80jl8h808nnx7i9qr-vm-test-run-systemd-nsresourced-mountfsd.drv12error: Cannot build '/nix/store/pf6rsjcj61n5d0q80jl8h808nnx7i9qr-vm-test-run-systemd-nsresourced-mountfsd.drv'.13 Reason: builder failed with exit code 1.14 Output paths:15 /nix/store/5q5jdp2f12q6wlslpljm9h19kz7zax5k-vm-test-run-systemd-nsresourced-mountfsd16 Last 25 log lines:17 > machine # [ 13.968339] systemd[1]: Starting Namespace Resource Manager...18 > machine # [ 14.002267] systemd-nsresourced[845]: Not setting up BPF subsystem, as functionality has been disabled at compile time.19 > machine # [ 14.006077] systemd[1]: Started Namespace Resource Manager.20 > machine: (finished: must succeed: varlinkctl introspect /run/systemd/userdb/io.systemd.NamespaceResource, in 0.09 seconds)21 > machine: must succeed: unshare --user varlinkctl --exec call --push-fd=/proc/self/ns/user /run/systemd/userdb/io.systemd.NamespaceResource io.systemd.NamespaceResource.AllocateUserRange '{"name":"nixos-test","size":65536,"userNamespaceFileDescriptor":0}' -- cat /proc/self/uid_map22 > machine # Method call io.systemd.NamespaceResource.AllocateUserRange() failed: io.systemd.NamespaceResource.UserNamespaceInterfaceNotSupported23 > machine: output: {}24 >25 > !!! Test "nsresourced serves its varlink interface and delegates a user namespace" failed with error: "command `unshare --user varlinkctl --exec call --push-fd=/proc/self/ns/user /run/systemd/userdb/io.systemd.NamespaceResource io.systemd.NamespaceResource.AllocateUserRange '{"name":"nixos-test","size":65536,"userNamespaceFileDescriptor":0}' -- cat /proc/self/uid_map` failed (exit code 1)"26 > !!! Traceback (most recent call last):27 > !!! File "<string>", line 14, in <module>28 > !!! machine.succeed(29 > !!! 30 > !!! RequestedAssertionFailed: command `unshare --user varlinkctl --exec call --push-fd=/proc/self/ns/user /run/systemd/userdb/io.systemd.NamespaceResource io.systemd.NamespaceResource.AllocateUserRange '{"name":"nixos-test","size":65536,"userNamespaceFileDescriptor":0}' -- cat /proc/self/uid_map` failed (exit code 1)31 > cleanup32 > kill QemuMachine (pid 45)33 > machine # qemu-system-x86_64: terminating on signal 15 from pid 39 (/nix/store/xahxrjs30p3mw0a42bqg9ikgkikskw8m-python3-3.14.8/bin/python3.14)34 > machine # [2026-10-23T03:12:08Z INFO virtiofsd] Client disconnected, shutting down35 > machine # [2026-10-23T03:12:08Z INFO virtiofsd] Client disconnected, shutting down36 > machine # [2026-10-23T03:12:08Z INFO virtiofsd] Client disconnected, shutting down37 > (finished: cleanup, in 0.25 seconds)38 > additionally exposed symbols:39 > machine,40 > vlan1,41 > 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_ssh42 For full logs, run:43 nix log /nix/store/pf6rsjcj61n5d0q80jl8h808nnx7i9qr-vm-test-run-systemd-nsresourced-mountfsd.drv