1these 10 derivations will be built:2 /nix/store/bhv3hh03fx53mkps33zn4pzcmrbgjhf5-system-units.drv3 /nix/store/s06bkfczxsyrpnhj3rn67hqy9s1ig34w-etc.drv4 /nix/store/jck406c1p775183svk192zf59lr3rshn-activate.drv5 /nix/store/s7diglcd0gycw65v78y2r1bxzd55jkf4-nixos-system-machine-test.drv6 /nix/store/ypgi3yipcvxirpd15a6spn9nn3zxclww-closure-info.drv7 /nix/store/ybap5sc0q6q80x7i7d1w6k0cr99ilmv9-run-nixos-vm.drv8 /nix/store/s22qkbj4way5zj75mj22lmn3mwib974g-nixos-vm.drv9 /nix/store/kqwxdvjayx1l2mgyx4s4xq7fqrs0gjg6-driverConfiguration.json.drv10 /nix/store/0dmyq7xlbqqqw48yhblcz620qay8pkr8-nixos-test-driver-systemd-nsresourced-mountfsd.drv11 /nix/store/91a1zi9wd4cr0gzj6wd1fczmnzyki78p-vm-test-run-systemd-nsresourced-mountfsd.drv12error: Cannot build '/nix/store/91a1zi9wd4cr0gzj6wd1fczmnzyki78p-vm-test-run-systemd-nsresourced-mountfsd.drv'.13 Reason: builder failed with exit code 1.14 Output paths:15 /nix/store/nvg7mq84rw30yqfjkmfxczkpz2gqny2l-vm-test-run-systemd-nsresourced-mountfsd16 Last 25 log lines:17 > machine # [ 15.193327] systemd[1]: Starting Namespace Resource Manager...18 > machine # [ 15.226936] systemd-nsresourced[858]: Not setting up BPF subsystem, as functionality has been disabled at compile time.19 > machine # [ 15.231701] 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 # [2026-10-21T03:10:58Z INFO virtiofsd] Client disconnected, shutting down35 > machine # [2026-10-21T03:10:58Z INFO virtiofsd] Client disconnected, shutting down36 > machine # [2026-10-21T03:10:58Z INFO virtiofsd] Client disconnected, shutting down37 > (finished: cleanup, in 0.15 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/91a1zi9wd4cr0gzj6wd1fczmnzyki78p-vm-test-run-systemd-nsresourced-mountfsd.drv