these 4 derivations will be built:
  /nix/store/923k0dp5w5g1pn3303w24a3qiiibaj0y-test-script.drv
  /nix/store/ii6c1xzy91js8rpmxq4y3g8ikzkd538a-driverConfiguration.json.drv
  /nix/store/7dbbyh5ndgmkn4nsnfvznc482bn7m3rj-nixos-test-driver-iets-cachetest.drv
  /nix/store/916sys9nyxgcwhh5zsa571jpjmrps55f-container-test-run-iets-cachetest.drv
building '/nix/store/923k0dp5w5g1pn3303w24a3qiiibaj0y-test-script.drv'
test-script> structuredAttrs is enabled
building '/nix/store/ii6c1xzy91js8rpmxq4y3g8ikzkd538a-driverConfiguration.json.drv'
driverConfiguration.json> structuredAttrs is enabled
building '/nix/store/7dbbyh5ndgmkn4nsnfvznc482bn7m3rj-nixos-test-driver-iets-cachetest.drv'
nixos-test-driver-iets-cachetest> Running type check (enable/disable: config.skipTypeCheck)
nixos-test-driver-iets-cachetest> See https://nixos.org/manual/nixos/stable/#test-opt-skipTypeCheck
nixos-test-driver-iets-cachetest> All checks passed!
nixos-test-driver-iets-cachetest> Linting test script (enable/disable: config.skipLint)
nixos-test-driver-iets-cachetest> See https://nixos.org/manual/nixos/stable/#test-opt-skipLint
nixos-test-driver-iets-cachetest> All checks passed!
building '/nix/store/916sys9nyxgcwhh5zsa571jpjmrps55f-container-test-run-iets-cachetest.drv'
container-test-run-iets-cachetest> Machine state will be reset. To keep it, pass --keep-machine-state
container-test-run-iets-cachetest> start all VLans
container-test-run-iets-cachetest> (finished: start all VLans, in 0.00 seconds)
container-test-run-iets-cachetest> 
container-test-run-iets-cachetest> Test will time out and terminate in 3600.0 seconds
container-test-run-iets-cachetest> run the VM test script
container-test-run-iets-cachetest> additionally exposed symbols:
container-test-run-iets-cachetest>     machine,
container-test-run-iets-cachetest>     vlan1,
container-test-run-iets-cachetest>     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
container-test-run-iets-cachetest> machine: waiting for unit multi-user.target
container-test-run-iets-cachetest> machine: systemd-nspawn running (pid 50)
container-test-run-iets-cachetest> machine: Waiting for journal at /build/vm-state-machine/var/log/journal...
container-test-run-iets-cachetest> nixos-nspawn(machine): TAP vde-tap1 not found; container will be isolated from VDE
container-test-run-iets-cachetest> nixos-nspawn(machine): A common reason for this is that /dev/net is not available in the Nix sandbox. Try adding /dev/net to extra-sandbox-paths.
container-test-run-iets-cachetest> Note: in a future version of systemd-nspawn the default set of permitted socket address families will be restricted to AF_INET, AF_INET6 and AF_UNIX. Use --restrict-address-families= to configure the set of permitted socket address families, or set RestrictAddressFamilies= in a .nspawn file.
container-test-run-iets-cachetest> ░ Spawning container machine on /build/vm-state-machine.
container-test-run-iets-cachetest> machine # No journal files were found.
container-test-run-iets-cachetest> machine # No journal boot entry found for the specified boot (+0).
container-test-run-iets-cachetest> machine # [1759329.122192] machine systemd-journald[57]: Journal started
container-test-run-iets-cachetest> machine # [1759329.122257] machine systemd-journald[57]: Runtime Journal (/run/log/journal/8aec39cf1cbc4417a73efa0bc999f952) is 8M, max 2.5G, 2.5G free.
container-test-run-iets-cachetest> machine # [1759329.144555] machine systemd[1]: Finished Create Static Device Nodes in /dev gracefully.
container-test-run-iets-cachetest> machine # [1759329.164261] machine systemd[1]: Starting Flush Journal to Persistent Storage...
container-test-run-iets-cachetest> machine # [1759329.165960] machine systemd[1]: Starting Create Static Device Nodes in /dev...
container-test-run-iets-cachetest> machine # [1759329.203337] machine systemd-journald[57]: Time spent on flushing to /var/log/journal/8aec39cf1cbc4417a73efa0bc999f952 is 1.556ms for 5 entries.
container-test-run-iets-cachetest> machine # [1759329.203337] machine systemd-journald[57]: System Journal (/var/log/journal/8aec39cf1cbc4417a73efa0bc999f952) is 512B, max 4G, 3.9G free.
container-test-run-iets-cachetest> machine # [1759329.224132] machine systemd[1]: Finished Create Static Device Nodes in /dev.
container-test-run-iets-cachetest> machine # [1759329.225916] machine systemd[1]: Reached target Preparation for Local File Systems.
container-test-run-iets-cachetest> machine # [1759329.226035] machine systemd[1]: Rule-based Manager for Device Events and Files skipped, unmet condition check ConditionPathIsReadWrite=/sys
container-test-run-iets-cachetest> machine # [1759329.242290] machine systemd[1]: Finished Flush Journal to Persistent Storage.
container-test-run-iets-cachetest> machine # [1759329.380620] machine systemd[1]: Finished Firewall.
container-test-run-iets-cachetest> machine # [1759330.091394] machine systemd[1]: Mounting /run/wrappers...
container-test-run-iets-cachetest> machine # [1759330.125179] machine systemd[1]: Mounted /run/wrappers.
container-test-run-iets-cachetest> machine # [1759330.126991] machine systemd[1]: Reached target Local File Systems.
container-test-run-iets-cachetest> machine # [1759330.127798] machine systemd[1]: Listening on Boot Loader Control Service Socket.
container-test-run-iets-cachetest> machine # [1759330.129132] machine systemd[1]: Starting Create SUID/SGID Wrappers...
container-test-run-iets-cachetest> machine # [1759330.129176] machine systemd[1]: Update Boot Loader Random Seed skipped, unmet condition check ConditionVirtualization=!container
container-test-run-iets-cachetest> machine # [1759330.130761] machine systemd[1]: Starting Save Transient machine-id to Disk...
container-test-run-iets-cachetest> machine # [1759330.131343] machine systemd[1]: Starting Create System Files and Directories...
container-test-run-iets-cachetest> machine # [1759330.146327] machine systemd-tmpfiles[161]: Cannot set file attributes for '/var/empty', value=0x00000010, mask=0x00000010, ignoring: Operation not permitted
container-test-run-iets-cachetest> machine # [1759330.146483] machine systemd-tmpfiles[161]: fchmod() of /var/log/journal failed: Operation not permitted
container-test-run-iets-cachetest> machine # [1759330.146585] machine systemd-tmpfiles[161]: fchmod() of /var/log/journal/8aec39cf1cbc4417a73efa0bc999f952 failed: Operation not permitted
container-test-run-iets-cachetest> machine # [1759330.146725] machine systemd-tmpfiles[161]: fchmod() of /run/log/journal failed: Operation not permitted
container-test-run-iets-cachetest> machine # [1759330.152943] machine systemd[1]: Finished Create System Files and Directories.
container-test-run-iets-cachetest> machine # [1759330.155135] machine suid-sgid-wrappers-start[168]: chmod: changing permissions of '/run/wrappers/wrappers.EOyi8i8SpC/chsh': Operation not permitted
container-test-run-iets-cachetest> machine # [1759330.168666] machine systemd[1]: suid-sgid-wrappers.service: Main process exited, code=exited, status=1/FAILURE
container-test-run-iets-cachetest> machine # [1759330.168739] machine systemd[1]: suid-sgid-wrappers.service: Failed with result 'exit-code'.
container-test-run-iets-cachetest> machine # [1759330.168858] machine systemd[1]: Failed to start Create SUID/SGID Wrappers.
container-test-run-iets-cachetest> machine # [1759330.172027] machine systemd[1]: Starting Rebuild Journal Catalog...
container-test-run-iets-cachetest> machine # [1759330.172799] machine systemd[1]: Starting Record System Boot/Shutdown in UTMP...
container-test-run-iets-cachetest> machine # [1759330.206828] machine systemd[1]: Finished Record System Boot/Shutdown in UTMP.
container-test-run-iets-cachetest> machine # [1759330.211770] machine systemd[1]: Finished Rebuild Journal Catalog.
container-test-run-iets-cachetest> machine # [1759330.212929] machine systemd[1]: Starting Update is Completed...
container-test-run-iets-cachetest> machine # [1759330.225143] machine systemd[1]: Finished Update is Completed.
container-test-run-iets-cachetest> machine # [1759330.225262] machine systemd[1]: Reached target System Initialization.
container-test-run-iets-cachetest> machine # [1759330.225326] machine systemd[1]: Discard unused filesystem blocks once a week skipped, unmet condition check ConditionVirtualization=!container
container-test-run-iets-cachetest> machine # [1759330.225356] machine systemd[1]: Started Daily Cleanup of Temporary Directories.
container-test-run-iets-cachetest> machine # [1759330.225370] machine systemd[1]: Reached target Timer Units.
container-test-run-iets-cachetest> machine # [1759330.225463] machine systemd[1]: Listening on D-Bus System Message Bus Socket.
container-test-run-iets-cachetest> machine # [1759330.225532] machine systemd[1]: Listening on Virtual Machine and Container Registration Service Socket.
container-test-run-iets-cachetest> machine # [1759330.225547] machine systemd[1]: Reached target Socket Units.
container-test-run-iets-cachetest> machine # [1759330.225568] machine systemd[1]: Reached target Basic System.
container-test-run-iets-cachetest> machine # [1759330.228321] machine systemd[1]: Starting Import lastlog data into lastlog2 database...
container-test-run-iets-cachetest> machine # [1759330.229083] machine systemd[1]: Starting Name Service Cache Daemon (nsncd)...
container-test-run-iets-cachetest> machine # [1759330.230300] machine systemd[1]: Starting resolvconf update...
container-test-run-iets-cachetest> machine # [1759330.250951] machine systemd[1]: Finished Import lastlog data into lastlog2 database.
container-test-run-iets-cachetest> machine # [1759330.281486] machine systemd[1]: etc-machine\x2did.mount: Deactivated successfully.
container-test-run-iets-cachetest> machine # [1759330.282505] machine systemd[1]: Finished Save Transient machine-id to Disk.
container-test-run-iets-cachetest> machine # [1759330.322656] machine systemd[1]: nscd.service: Deactivated successfully.
container-test-run-iets-cachetest> machine # [1759330.322836] machine systemd[1]: Stopped Name Service Cache Daemon (nsncd).
container-test-run-iets-cachetest> machine # [1759330.325083] machine systemd[1]: Starting Name Service Cache Daemon (nsncd)...
container-test-run-iets-cachetest> machine # [1759330.330319] machine resolvconf-start[235]: setfacl: /run/resolvconf: Operation not supported
container-test-run-iets-cachetest> machine # [1759330.331235] machine systemd[1]: resolvconf.service: Main process exited, code=exited, status=1/FAILURE
container-test-run-iets-cachetest> machine # [1759330.331329] machine systemd[1]: resolvconf.service: Failed with result 'exit-code'.
container-test-run-iets-cachetest> machine # [1759330.344217] machine systemd[1]: Failed to start resolvconf update.
container-test-run-iets-cachetest> machine # [1759330.344405] machine systemd[1]: Reached target Preparation for Network.
container-test-run-iets-cachetest> machine # [1759330.345284] machine systemd[1]: Starting Address configuration of eth1...
container-test-run-iets-cachetest> machine # [1759330.346469] machine systemd[1]: Starting Extra networking commands....
container-test-run-iets-cachetest> machine # [1759330.365586] machine network-addresses-eth1-start[238]: adding address 192.168.1.1/24... done
container-test-run-iets-cachetest> machine # [1759330.370106] machine network-addresses-eth1-start[238]: adding address 2001:db8:1::1/64... done
container-test-run-iets-cachetest> machine # [1759330.375200] machine systemd[1]: Finished Address configuration of eth1.
container-test-run-iets-cachetest> machine # [1759330.425071] machine systemd[1]: Finished Extra networking commands..
container-test-run-iets-cachetest> machine # [1759330.425180] machine systemd[1]: Reached target Network.
container-test-run-iets-cachetest> machine # [1759330.544359] machine systemd[1]: Started Name Service Cache Daemon (nsncd).
container-test-run-iets-cachetest> machine # [1759330.544438] machine systemd[1]: Reached target Host and Network Name Lookups.
container-test-run-iets-cachetest> machine # [1759330.544489] machine systemd[1]: Reached target User and Group Name Lookups.
container-test-run-iets-cachetest> machine # [1759330.545411] machine nsncd[232]: Oct 15 07:41:41.275 INFO started, config: Config { ignored_request_types: {}, worker_count: 8, handoff_timeout: 10s }, path: "/var/run/nscd/socket"
container-test-run-iets-cachetest> machine # [1759330.545999] machine systemd[1]: Starting User Login Management...
container-test-run-iets-cachetest> machine # [1759330.548448] machine systemd[1]: Starting Permit User Sessions...
container-test-run-iets-cachetest> machine # [1759330.588459] machine systemd[1]: Finished Permit User Sessions.
container-test-run-iets-cachetest> machine # [1759330.589140] machine systemd[1]: Started Console Getty.
container-test-run-iets-cachetest> machine # [1759330.589176] machine systemd[1]: Getty on tty1 skipped, unmet condition check ConditionPathExists=/dev/tty0
container-test-run-iets-cachetest> machine # [1759330.589195] machine systemd[1]: Reached target Login Prompts.