these 4 derivations will be built:
  /nix/store/8pq49wf3y99q9h2av03n8f4am9rdvz8b-test-script.drv
  /nix/store/1yhjh6vsiqk291kw6wzdk90g3bc0pi4n-driverConfiguration.json.drv
  /nix/store/vay1lrbivpk6w20s8q8nvs3pk6szhjac-nixos-test-driver-iets-cachetest.drv
  /nix/store/f57sivdmzf4yz09947bb07jg27m2xc0j-container-test-run-iets-cachetest.drv
building '/nix/store/8pq49wf3y99q9h2av03n8f4am9rdvz8b-test-script.drv'
test-script> structuredAttrs is enabled
building '/nix/store/1yhjh6vsiqk291kw6wzdk90g3bc0pi4n-driverConfiguration.json.drv'
driverConfiguration.json> structuredAttrs is enabled
building '/nix/store/vay1lrbivpk6w20s8q8nvs3pk6szhjac-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/f57sivdmzf4yz09947bb07jg27m2xc0j-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 # [1683508.071550] machine systemd-journald[57]: Journal started
container-test-run-iets-cachetest> machine # [1683508.071623] machine systemd-journald[57]: Runtime Journal (/run/log/journal/f75c12a25eda4a96ae98711bd8ed95d0) is 8M, max 2.5G, 2.5G free.
container-test-run-iets-cachetest> machine # [1683508.170145] machine systemd[1]: Finished Apply Kernel Variables.
container-test-run-iets-cachetest> machine # [1683508.234716] machine systemd[1]: Finished Create Static Device Nodes in /dev gracefully.
container-test-run-iets-cachetest> machine # [1683508.332185] machine systemd[1]: Starting Flush Journal to Persistent Storage...
container-test-run-iets-cachetest> machine # [1683508.336124] machine systemd[1]: Starting Create Static Device Nodes in /dev...
container-test-run-iets-cachetest> machine # [1683508.348452] machine systemd-journald[57]: Time spent on flushing to /var/log/journal/f75c12a25eda4a96ae98711bd8ed95d0 is 5.661ms for 6 entries.
container-test-run-iets-cachetest> machine # [1683508.348452] machine systemd-journald[57]: System Journal (/var/log/journal/f75c12a25eda4a96ae98711bd8ed95d0) is 512B, max 4G, 3.9G free.
container-test-run-iets-cachetest> machine # [1683508.380188] machine systemd[1]: Finished Create Static Device Nodes in /dev.
container-test-run-iets-cachetest> machine # [1683508.382269] machine systemd[1]: Reached target Preparation for Local File Systems.
container-test-run-iets-cachetest> machine # [1683508.382436] machine systemd[1]: Rule-based Manager for Device Events and Files skipped, unmet condition check ConditionPathIsReadWrite=/sys
container-test-run-iets-cachetest> machine # [1683508.389482] machine systemd[1]: Finished Flush Journal to Persistent Storage.
container-test-run-iets-cachetest> machine # [1683508.562961] machine systemd[1]: Finished Firewall.
container-test-run-iets-cachetest> machine # [1683509.282296] machine systemd[1]: Mounting /run/wrappers...
container-test-run-iets-cachetest> machine # [1683509.376110] machine systemd[1]: Mounted /run/wrappers.
container-test-run-iets-cachetest> machine # [1683509.376686] machine systemd[1]: Reached target Local File Systems.
container-test-run-iets-cachetest> machine # [1683509.377811] machine systemd[1]: Listening on Boot Loader Control Service Socket.
container-test-run-iets-cachetest> machine # [1683509.379489] machine systemd[1]: Starting Create SUID/SGID Wrappers...
container-test-run-iets-cachetest> machine # [1683509.379532] machine systemd[1]: Update Boot Loader Random Seed skipped, unmet condition check ConditionVirtualization=!container
container-test-run-iets-cachetest> machine # [1683509.380838] machine systemd[1]: Starting Save Transient machine-id to Disk...
container-test-run-iets-cachetest> machine # [1683509.381574] machine systemd[1]: Starting Create System Files and Directories...
container-test-run-iets-cachetest> machine # [1683509.400090] 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 # [1683509.400264] machine systemd-tmpfiles[161]: fchmod() of /var/log/journal failed: Operation not permitted
container-test-run-iets-cachetest> machine # [1683509.400388] machine systemd-tmpfiles[161]: fchmod() of /var/log/journal/f75c12a25eda4a96ae98711bd8ed95d0 failed: Operation not permitted
container-test-run-iets-cachetest> machine # [1683509.400539] machine systemd-tmpfiles[161]: fchmod() of /run/log/journal failed: Operation not permitted
container-test-run-iets-cachetest> machine # [1683509.412521] machine suid-sgid-wrappers-start[168]: chmod: changing permissions of '/run/wrappers/wrappers.8V234xMeaj/chsh': Operation not permitted
container-test-run-iets-cachetest> machine # [1683509.422301] machine systemd[1]: suid-sgid-wrappers.service: Main process exited, code=exited, status=1/FAILURE
container-test-run-iets-cachetest> machine # [1683509.422408] machine systemd[1]: suid-sgid-wrappers.service: Failed with result 'exit-code'.
container-test-run-iets-cachetest> machine # [1683509.422641] machine systemd[1]: Failed to start Create SUID/SGID Wrappers.
container-test-run-iets-cachetest> machine # [1683509.439950] machine systemd[1]: Finished Create System Files and Directories.
container-test-run-iets-cachetest> machine # [1683509.464317] machine systemd[1]: Starting Rebuild Journal Catalog...
container-test-run-iets-cachetest> machine # [1683509.466070] machine systemd[1]: Starting Record System Boot/Shutdown in UTMP...
container-test-run-iets-cachetest> machine # [1683509.481857] machine systemd[1]: Finished Record System Boot/Shutdown in UTMP.
container-test-run-iets-cachetest> machine # [1683509.488691] machine systemd[1]: Finished Rebuild Journal Catalog.
container-test-run-iets-cachetest> machine # [1683509.490023] machine systemd[1]: Starting Update is Completed...
container-test-run-iets-cachetest> machine # [1683509.505407] machine systemd[1]: Finished Update is Completed.
container-test-run-iets-cachetest> machine # [1683509.505792] machine systemd[1]: Reached target System Initialization.
container-test-run-iets-cachetest> machine # [1683509.506042] machine systemd[1]: Discard unused filesystem blocks once a week skipped, unmet condition check ConditionVirtualization=!container
container-test-run-iets-cachetest> machine # [1683509.506201] machine systemd[1]: Started Daily Cleanup of Temporary Directories.
container-test-run-iets-cachetest> machine # [1683509.506231] machine systemd[1]: Reached target Timer Units.
container-test-run-iets-cachetest> machine # [1683509.506504] machine systemd[1]: Listening on D-Bus System Message Bus Socket.
container-test-run-iets-cachetest> machine # [1683509.506601] machine systemd[1]: Listening on Virtual Machine and Container Registration Service Socket.
container-test-run-iets-cachetest> machine # [1683509.506620] machine systemd[1]: Reached target Socket Units.
container-test-run-iets-cachetest> machine # [1683509.506814] machine systemd[1]: Reached target Basic System.
container-test-run-iets-cachetest> machine # [1683509.508236] machine systemd[1]: Starting Import lastlog data into lastlog2 database...
container-test-run-iets-cachetest> machine # [1683509.512134] machine systemd[1]: Starting Name Service Cache Daemon (nsncd)...
container-test-run-iets-cachetest> machine # [1683509.516464] machine systemd[1]: Starting resolvconf update...
container-test-run-iets-cachetest> machine # [1683509.545333] machine systemd[1]: Finished Import lastlog data into lastlog2 database.
container-test-run-iets-cachetest> machine # [1683509.649172] machine resolvconf-start[230]: setfacl: /run/resolvconf: Operation not supported
container-test-run-iets-cachetest> machine # [1683509.654480] machine systemd[1]: resolvconf.service: Main process exited, code=exited, status=1/FAILURE
container-test-run-iets-cachetest> machine # [1683509.654688] machine systemd[1]: resolvconf.service: Failed with result 'exit-code'.
container-test-run-iets-cachetest> machine # [1683509.692153] machine systemd[1]: Failed to start resolvconf update.
container-test-run-iets-cachetest> machine # [1683509.692559] machine systemd[1]: nscd.service: Deactivated successfully.
container-test-run-iets-cachetest> machine # [1683509.692741] machine systemd[1]: Stopped Name Service Cache Daemon (nsncd).
container-test-run-iets-cachetest> machine # [1683509.695571] machine systemd[1]: Reached target Preparation for Network.
container-test-run-iets-cachetest> machine # [1683509.696836] machine systemd[1]: Starting Address configuration of eth1...
container-test-run-iets-cachetest> machine # [1683509.697683] machine systemd[1]: Starting Extra networking commands....
container-test-run-iets-cachetest> machine # [1683509.698673] machine systemd[1]: Starting Name Service Cache Daemon (nsncd)...
container-test-run-iets-cachetest> machine # [1683509.715989] machine network-addresses-eth1-start[235]: adding address 192.168.1.1/24... done
container-test-run-iets-cachetest> machine # [1683509.719019] machine network-addresses-eth1-start[235]: adding address 2001:db8:1::1/64... done
container-test-run-iets-cachetest> machine # [1683509.722783] machine systemd[1]: Finished Address configuration of eth1.
container-test-run-iets-cachetest> machine # [1683509.769083] machine systemd[1]: Finished Extra networking commands..
container-test-run-iets-cachetest> machine # [1683509.769772] machine systemd[1]: Reached target Network.
container-test-run-iets-cachetest> machine # [1683509.973849] machine nsncd[237]: Oct 14 10:38:00.704 INFO started, config: Config { ignored_request_types: {}, worker_count: 8, handoff_timeout: 10s }, path: "/var/run/nscd/socket"
container-test-run-iets-cachetest> machine # [1683509.977262] machine systemd[1]: Started Name Service Cache Daemon (nsncd).
container-test-run-iets-cachetest> machine # [1683509.977343] machine systemd[1]: Reached target Host and Network Name Lookups.
container-test-run-iets-cachetest> machine # [1683509.977411] machine systemd[1]: Reached target User and Group Name Lookups.
container-test-run-iets-cachetest> machine # [1683509.996049] machine systemd[1]: Starting User Login Management...
container-test-run-iets-cachetest> machine # [1683510.047166] machine systemd[1]: Starting Permit User Sessions...
container-test-run-iets-cachetest> machine # [1683510.080611] machine systemd[1]: Finished Permit User Sessions.
container-test-run-iets-cachetest> machine # [1683510.086226] machine systemd[1]: Started Console Getty.
container-test-run-iets-cachetest> machine # [1683510.086293] machine systemd[1]: Getty on tty1 skipped, unmet condition check ConditionPathExists=/dev/tty0
container-test-run-iets-cachetest> machine # [1683510.086316] machine systemd[1]: Reached target Login Prompts.