tribuchet: building on jamie Machine state will be reset. To keep it, pass --keep-machine-state start all VLans (finished: start all VLans, in 0.00 seconds) Initializing machine ID from random generator. Test will time out and terminate in 3600 seconds run the VM test script machine: waiting for unit herdr-eternal-server.service machine: systemd-nspawn running (pid 49) machine: Waiting for journal at /build/vm-state-machine/var/log/journal... nixos-nspawn(machine): TAP vde-tap1 not found; container will be isolated from VDE 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. 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. ░ Spawning container machine on /build/vm-state-machine. machine # [878698.250814] machine systemd-journald[57]: Journal started machine # [878698.250893] machine systemd-journald[57]: Runtime Journal (/run/log/journal/2ae9c52fcc9849afac7b243664cfe455) is 8M, max 4G, 3.9G free. machine # [878698.273424] machine systemd[1]: Listening on Journal Log Access Socket. machine # [878698.274494] machine systemd[1]: Finished Apply Kernel Variables. machine # [878698.293471] machine systemd[1]: Finished Create Static Device Nodes in /dev gracefully. machine # [878698.306120] machine systemd[1]: Starting Flush Journal to Persistent Storage... machine # [878698.309246] machine systemd[1]: Starting Create Static Device Nodes in /dev... machine # [878698.314153] machine systemd-journald[57]: Time spent on flushing to /var/log/journal/2ae9c52fcc9849afac7b243664cfe455 is 1.870ms for 7 entries. machine # [878698.314153] machine systemd-journald[57]: System Journal (/var/log/journal/2ae9c52fcc9849afac7b243664cfe455) is 512B, max 4G, 3.9G free. machine # [878698.322451] machine systemd[1]: Finished Flush Journal to Persistent Storage. machine # [878698.322884] machine systemd[1]: Finished Create Static Device Nodes in /dev. machine # [878698.324030] machine systemd[1]: Reached target Preparation for Local File Systems. machine # [878698.324128] machine systemd[1]: Rule-based Manager for Device Events and Files skipped, unmet condition check ConditionPathIsReadWrite=/sys machine # [878698.399757] machine systemd[1]: Finished Firewall. machine # [878699.249860] machine systemd[1]: Mounting /run/wrappers... machine # [878699.341195] machine systemd[1]: Mounted /run/wrappers. machine # [878699.341883] machine systemd[1]: Reached target Local File Systems. machine # [878699.342642] machine systemd[1]: Listening on Boot Loader Control Service Socket. machine # [878699.343608] machine systemd[1]: Starting Create SUID/SGID Wrappers... machine # [878699.343633] machine systemd[1]: Update Boot Loader Random Seed skipped, unmet condition check ConditionVirtualization=!container machine # [878699.344480] machine systemd[1]: Starting Save Transient machine-id to Disk... machine # [878699.345233] machine systemd[1]: Starting Create System Files and Directories... machine # [878699.362957] machine systemd-tmpfiles[165]: Cannot set file attributes for '/var/empty', value=0x00000010, mask=0x00000010, ignoring: Operation not permitted machine # [878699.363362] machine systemd-tmpfiles[165]: fchmod() of /var/log/journal failed: Operation not permitted machine # [878699.363485] machine suid-sgid-wrappers-start[172]: chmod: changing permissions of '/run/wrappers/wrappers.evNdlzrNYN/chsh': Operation not permitted machine # [878699.363654] machine systemd-tmpfiles[165]: fchmod() of /var/log/journal/2ae9c52fcc9849afac7b243664cfe455 failed: Operation not permitted machine # [878699.363962] machine systemd-tmpfiles[165]: fchmod() of /run/log/journal failed: Operation not permitted machine # [878699.364945] machine systemd[1]: suid-sgid-wrappers.service: Main process exited, code=exited, status=1/FAILURE machine # [878699.365048] machine systemd[1]: suid-sgid-wrappers.service: Failed with result 'exit-code'. machine # [878699.365249] machine systemd[1]: Failed to start Create SUID/SGID Wrappers. machine # [878699.365725] machine systemd[1]: Finished Create System Files and Directories. machine # [878699.413431] machine systemd[1]: etc-machine\x2did.mount: Deactivated successfully. machine # [878699.414161] machine systemd[1]: Finished Save Transient machine-id to Disk. machine # [878699.416204] machine systemd[1]: Starting Rebuild Journal Catalog... machine # [878699.416880] machine systemd[1]: Starting Record System Boot/Shutdown in UTMP... machine # [878699.499711] machine systemd[1]: Finished Record System Boot/Shutdown in UTMP. machine # [878699.506880] machine systemd[1]: Finished Rebuild Journal Catalog. machine # [878699.508178] machine systemd[1]: Starting Update is Completed... machine # [878699.516557] machine systemd[1]: Finished Update is Completed. machine # [878699.516628] machine systemd[1]: Reached target System Initialization. machine # [878699.516697] machine systemd[1]: Discard unused filesystem blocks once a week skipped, unmet condition check ConditionVirtualization=!container machine # [878699.516718] machine systemd[1]: Started Daily Cleanup of Temporary Directories. machine # [878699.516732] machine systemd[1]: Reached target Timer Units. machine # [878699.516823] machine systemd[1]: Listening on D-Bus System Message Bus Socket. machine # [878699.516889] machine systemd[1]: Listening on herdr-eternal-server.socket. machine # [878699.517077] machine systemd[1]: Listening on Nix Daemon Socket. machine # [878699.517811] machine systemd[1]: Listening on OpenSSH Server Socket (systemd-ssh-generator, AF_UNIX Export). machine # [878699.518425] machine systemd[1]: Listening on OpenSSH Server Socket (systemd-ssh-generator, AF_UNIX Local). machine # [878699.518757] machine systemd[1]: Listening on SSH Socket. machine # [878699.518846] machine systemd[1]: Listening on Virtual Machine and Container Registration Service Socket. machine # [878699.518861] machine systemd[1]: Reached target Socket Units. machine # [878699.518887] machine systemd[1]: Reached target Basic System. machine # [878699.519832] machine systemd[1]: Starting Import lastlog data into lastlog2 database... machine # [878699.520769] machine systemd[1]: Starting Name Service Cache Daemon (nsncd)... machine # [878699.521435] machine systemd[1]: Starting resolvconf update... machine # [878699.522092] machine systemd[1]: Starting SSH Host Keys Generation... machine # [878699.534890] machine systemd[1]: Finished Import lastlog data into lastlog2 database. machine # [878699.585010] machine systemd[1]: nscd.service: Deactivated successfully. machine # [878699.585185] machine systemd[1]: Stopped Name Service Cache Daemon (nsncd). machine # [878699.587487] machine systemd[1]: Starting Name Service Cache Daemon (nsncd)... machine # [878699.596414] machine systemd[1]: Finished resolvconf update. machine # [878699.596952] machine systemd[1]: Reached target Preparation for Network. machine # [878699.598085] machine systemd[1]: Starting Address configuration of eth1... machine # [878699.598950] machine systemd[1]: Starting Extra networking commands.... machine # [878699.614631] machine network-addresses-eth1-start[249]: adding address 192.168.1.1/24... done machine # [878699.617523] machine network-addresses-eth1-start[249]: adding address 2001:db8:1::1/64... done machine # [878699.621885] machine systemd[1]: Finished Address configuration of eth1. machine # [878699.651294] machine systemd[1]: Finished Extra networking commands.. machine # [878699.651795] machine systemd[1]: Reached target Network. machine # [878699.652853] machine systemd[1]: Starting Roaming-friendly transport for herdr --remote... machine # [878699.653735] machine systemd[1]: Starting Nginx Web Server... machine # [878699.672311] machine herdr-eternal-server[307]: 2026-10-24T13:28:12.482645Z INFO herdr_eternal_server: listening addr=127.0.0.1:7433 machine # [878699.674775] machine herdr-eternal-server[307]: 2026-10-24T13:28:12.484039Z INFO herdr_eternal_server: listening (quic) addr=[::]:7443 machine # [878699.673685] machine systemd[1]: Started Roaming-friendly transport for herdr --remote. machine # [878699.807786] machine sshd-keygen-start[198]: Generating public/private rsa key pair. machine # [878699.807786] machine sshd-keygen-start[198]: Your identification has been saved in /etc/ssh/ssh_host_rsa_key machine # [878699.807786] machine sshd-keygen-start[198]: Your public key has been saved in /etc/ssh/ssh_host_rsa_key.pub machine # [878699.807786] machine sshd-keygen-start[198]: The key fingerprint is: machine # [878699.807786] machine sshd-keygen-start[198]: SHA256:2Rersv6MiDU5lCSE39rtVEfNn+xJAp6ZcuQiRiVX3vU root@machine machine # [878699.807786] machine sshd-keygen-start[198]: The key's randomart image is: machine # [878699.807786] machine sshd-keygen-start[198]: +---[RSA 4096]----+ machine # [878699.807786] machine sshd-keygen-start[198]: | .. ..o.. o . | machine # [878699.807786] machine sshd-keygen-start[198]: | .. .o .oo + .| machine # [878699.807786] machine sshd-keygen-start[198]: | ...o +o*...E| machine # [878699.807786] machine sshd-keygen-start[198]: | .o.+ =.B.+ +.| machine # [878699.807786] machine sshd-keygen-start[198]: | o+.S.=.o + .| machine # [878699.807786] machine sshd-keygen-start[198]: | ....o o o | machine # [878699.807786] machine sshd-keygen-start[198]: | =o. . | machine # [878699.807786] machine sshd-keygen-start[198]: | o +.= | machine # [878699.807786] machine sshd-keygen-start[198]: | . ..+.o | machine # [878699.807786] machine sshd-keygen-start[198]: +----[SHA256]-----+ machine # [878699.820950] machine sshd-keygen-start[446]: Generating public/private ed25519 key pair. machine # [878699.820950] machine sshd-keygen-start[446]: Your identification has been saved in /etc/ssh/ssh_host_ed25519_key machine # [878699.820950] machine sshd-keygen-start[446]: Your public key has been saved in /etc/ssh/ssh_host_ed25519_key.pub machine # [878699.820950] machine sshd-keygen-start[446]: The key fingerprint is: machine # [878699.820950] machine sshd-keygen-start[446]: SHA256:MAgBgrBYj33gdOtimrwNGD1mwt155F6E8WZKvalZPS0 root@machine machine # [878699.820950] machine sshd-keygen-start[446]: The key's randomart image is: machine # [878699.820950] machine sshd-keygen-start[446]: +--[ED25519 256]--+ machine # [878699.820950] machine sshd-keygen-start[446]: |*.+.o .. | machine # [878699.820950] machine sshd-keygen-start[446]: |+o B + .= | machine # [878699.820950] machine sshd-keygen-start[446]: |o . = =+ * | machine # [878699.820950] machine sshd-keygen-start[446]: |... .o=o= + . | machine # [878699.820950] machine sshd-keygen-start[446]: |o.=.oo.+S= E . | machine # [878699.820950] machine sshd-keygen-start[446]: | B = .o = o | machine # [878699.820950] machine sshd-keygen-start[446]: |. = + | machine # [878699.820950] machine sshd-keygen-start[446]: | + | machine # [878699.820950] machine sshd-keygen-start[446]: | . . | machine # [878699.820950] machine sshd-keygen-start[446]: +----[SHA256]-----+ machine # [878699.822775] machine systemd[1]: sshd-keygen.service: Deactivated successfully. machine # [878699.823015] machine systemd[1]: Finished SSH Host Keys Generation. machine # [878699.885638] machine nsncd[240]: Oct 24 13:28:12.696 INFO started, config: Config { ignored_request_types: {}, worker_count: 8, handoff_timeout: 10s }, path: "/var/run/nscd/socket" machine # [878699.885764] machine systemd[1]: Started Name Service Cache Daemon (nsncd). machine # [878699.885818] machine systemd[1]: Reached target Host and Network Name Lookups. machine # [878699.885889] machine systemd[1]: Reached target User and Group Name Lookups. machine # [878699.887644] machine systemd[1]: Starting User Login Management... machine # [878699.888542] machine systemd[1]: Starting Permit User Sessions... machine # [878699.898862] machine systemd[1]: Finished Permit User Sessions. machine # [878699.899949] machine systemd[1]: Started Console Getty. machine # [878699.899980] machine systemd[1]: Getty on tty1 skipped, unmet condition check ConditionPathExists=/dev/tty0 machine # [878699.899993] machine systemd[1]: Reached target Login Prompts. machine # [878700.943617] machine systemd-logind[458]: New seat seat0. machine # [878700.944047] machine systemd[1]: Started User Login Management. machine # [878700.945636] machine systemd[1]: Starting D-Bus System Message Bus... machine # [878700.952050] machine nginx-pre-start[468]: nginx: the configuration file /nix/store/ip420ix5hk85adnhdbkninnl4b6w4y4c-nginx.conf syntax is ok machine # [878700.952394] machine nginx-pre-start[468]: nginx: configuration file /nix/store/ip420ix5hk85adnhdbkninnl4b6w4y4c-nginx.conf test is successful machine # [878701.076963] machine systemd[1]: Starting linger-users.service... machine # [878701.079032] machine systemd[1]: Started Nginx Web Server. machine # [878701.108137] machine systemd[1]: linger-users.service: Deactivated successfully. machine # [878701.108354] machine systemd[1]: Finished linger-users.service. machine # [878701.108530] machine systemd[1]: Reached target Multi-User System. machine # [878701.551367] machine dbus-broker-launch[469]: Looking up NSS user entry for 'systemd-timesync'... machine # [878701.551871] machine dbus-broker-launch[469]: NSS returned no entry for 'systemd-timesync' machine # [878701.551871] machine dbus-broker-launch[469]: Invalid user-name in /nix/store/a6nwi2mvir90m4j3bsrqmmq74j7bwddp-system-path/share/dbus-1/system.d/org.freedesktop.timesync1.conf +16: user="systemd-timesync" machine # [878701.552394] machine systemd[1]: Started D-Bus System Message Bus. machine # [878701.558279] machine dbus-broker-launch[469]: Ready machine # [878701.558860] machine systemd[1]: Startup finished in 3.764s. machine: (finished: waiting for unit herdr-eternal-server.service, in 4.65 seconds) machine: waiting for unit nginx.service machine: (finished: waiting for unit nginx.service, in 0.01 seconds) machine: waiting for TCP port 80 on localhost Connection to localhost (::1) 80 port [tcp/http] succeeded! machine: (finished: waiting for TCP port 80 on localhost, in 1.02 seconds) machine: must succeed: mkdir -p /root/.config/herdr-eternal machine: (finished: must succeed: mkdir -p /root/.config/herdr-eternal, in 0.01 seconds) machine: must succeed: printf '[targets.testbox] url = "ws://localhost/herdr-eternal" token = "test-token" forward_agent = true [targets.testbox-quic] url = "ws://127.0.0.1:1" quic_addr = "127.0.0.1:7443" quic_ca = "/nix/store/0db6zcb6qa2186iivydl9x9838yhmgv4-herdr-eternal-test-cert/cert.pem" token = "test-token" ' > /root/.config/herdr-eternal/config.toml machine: (finished: must succeed: printf '[targets.testbox] url = "ws://localhost/herdr-eternal" token = "test-token" forward_agent = true [targets.testbox-quic] url = "ws://127.0.0.1:1" quic_addr = "127.0.0.1:7443" quic_ca = "/nix/store/0db6zcb6qa2186iivydl9x9838yhmgv4-herdr-eternal-test-cert/cert.pem" token = "test-token" ' > /root/.config/herdr-eternal/config.toml, in 0.01 seconds) machine: must succeed: herdr-eternal-ssh -T testbox 'id -un; echo $SHELL; echo $USER; echo $LOGNAME; echo $HOME; curl --version > /dev/null && echo curl-ok; echo systemd=$RUNTIME_DIRECTORY$LISTEN_FDS$INVOCATION_ID' < /dev/null machine: (finished: must succeed: herdr-eternal-ssh -T testbox 'id -un; echo $SHELL; echo $USER; echo $LOGNAME; echo $HOME; curl --version > /dev/null && echo curl-ok; echo systemd=$RUNTIME_DIRECTORY$LISTEN_FDS$INVOCATION_ID' < /dev/null, in 0.14 seconds) machine: must fail: herdr-eternal-ssh -T testbox 'exit 3' < /dev/null machine: (finished: must fail: herdr-eternal-ssh -T testbox 'exit 3' < /dev/null, in 0.10 seconds) machine: must succeed: herdr-eternal-ssh -T testbox-quic 'echo over-quic' < /dev/null machine: (finished: must succeed: herdr-eternal-ssh -T testbox-quic 'echo over-quic' < /dev/null, in 0.07 seconds) machine: must succeed: cat > /root/restart-client.sh <<'EOF' /nix/store/6q7w20isxcr2y62z9xlfxb1ys6bddxac-herdr-eternal-0.1.0/bin/herdr-eternal-ssh -T testbox 'echo before; sleep 5; echo after; exit 5' /root/restart-out echo rc=$? >> /root/restart-out EOF machine: (finished: must succeed: cat > /root/restart-client.sh <<'EOF' /nix/store/6q7w20isxcr2y62z9xlfxb1ys6bddxac-herdr-eternal-0.1.0/bin/herdr-eternal-ssh -T testbox 'echo before; sleep 5; echo after; exit 5' /root/restart-out echo rc=$? >> /root/restart-out EOF, in 0.01 seconds) machine: must succeed: systemd-run --unit=restart-client --setenv=HOME=/root sh /root/restart-client.sh Running as unit: restart-client.service; invocation ID: 9689f38387c245d39a163f7b6537afc4 machine: (finished: must succeed: systemd-run --unit=restart-client --setenv=HOME=/root sh /root/restart-client.sh, in 0.17 seconds) machine: waiting for success: grep -q before /root/restart-out grep: /root/restart-out: No such file or directory machine # [878703.520437] machine systemd[1]: Started [systemd-run] /run/current-system/sw/bin/sh /root/restart-client.sh. machine: (finished: waiting for success: grep -q before /root/restart-out, in 1.03 seconds) machine: must succeed: systemctl show -p MainPID --value herdr-eternal-server machine: (finished: must succeed: systemctl show -p MainPID --value herdr-eternal-server, in 0.01 seconds) machine: must succeed: systemctl restart herdr-eternal-server machine # [878704.583524] machine systemd[1]: Stopping Roaming-friendly transport for herdr --remote... machine # [878704.677329] machine herdr-eternal-server[307]: 2026-10-24T13:28:17.487789Z INFO herdr_eternal_server: handed sessions over to the fd store fds=3 machine # [878704.683537] machine systemd[1]: herdr-eternal-server.service: Deactivated successfully. machine # [878704.683677] machine systemd[1]: herdr-eternal-server.service: Unit process 1022 (sh) remains running after unit stopped. machine # [878704.683744] machine systemd[1]: herdr-eternal-server.service: Unit process 1023 (zsh) remains running after unit stopped. machine # [878704.683809] machine systemd[1]: herdr-eternal-server.service: Unit process 1024 (sleep) remains running after unit stopped. machine: (finished: must succeed: systemctl restart herdr-eternal-server, in 0.32 seconds) machine: must succeed: systemctl show -p MainPID --value herdr-eternal-server machine: (finished: must succeed: systemctl show -p MainPID --value herdr-eternal-server, in 0.01 seconds) machine: waiting for success: grep -q rc= /root/restart-out machine # [878704.865186] machine systemd[1]: Stopped Roaming-friendly transport for herdr --remote. machine # [878704.878486] machine systemd[1]: herdr-eternal-server.service: Found left-over process 1022 (sh) in control group while starting unit. Ignoring. machine # [878704.878490] machine systemd[1]: herdr-eternal-server.service: This usually indicates unclean termination of a previous run, or service implementation deficiencies. machine # [878704.878550] machine systemd[1]: herdr-eternal-server.service: Found left-over process 1023 (zsh) in control group while starting unit. Ignoring. machine # [878704.878554] machine systemd[1]: herdr-eternal-server.service: This usually indicates unclean termination of a previous run, or service implementation deficiencies. machine # [878704.878608] machine systemd[1]: herdr-eternal-server.service: Found left-over process 1024 (sleep) in control group while starting unit. Ignoring. machine # [878704.878611] machine systemd[1]: herdr-eternal-server.service: This usually indicates unclean termination of a previous run, or service implementation deficiencies. machine # [878704.879402] machine systemd[1]: Starting Roaming-friendly transport for herdr --remote... machine # [878704.896598] machine herdr-eternal-server[1029]: 2026-10-24T13:28:17.707060Z INFO herdr_eternal_server: listening addr=127.0.0.1:7433 machine # [878704.896961] machine herdr-eternal-server[1029]: 2026-10-24T13:28:17.707411Z INFO herdr_eternal_server: listening (quic) addr=[::]:7443 machine # [878704.897061] machine herdr-eternal-server[1029]: 2026-10-24T13:28:17.707542Z INFO herdr_eternal_server: restored handed-over session token=307-1792848496418672838-3 machine # [878704.897176] machine systemd[1]: Started Roaming-friendly transport for herdr --remote. machine: (finished: waiting for success: grep -q rc= /root/restart-out, in 4.04 seconds) machine: must succeed: cat /root/restart-out machine: (finished: must succeed: cat /root/restart-out, in 0.01 seconds) machine: must succeed: journalctl -u herdr-eternal-server | grep -q 'restored handed-over session' machine: (finished: must succeed: journalctl -u herdr-eternal-server | grep -q 'restored handed-over session', in 0.01 seconds) machine: must succeed: ssh-keygen -t ed25519 -N "" -f /root/agent-key machine: (finished: must succeed: ssh-keygen -t ed25519 -N "" -f /root/agent-key, in 0.01 seconds) machine: must succeed: install -d -m 700 -o alice -g users /home/alice/.ssh machine: (finished: must succeed: install -d -m 700 -o alice -g users /home/alice/.ssh, in 0.01 seconds) machine: must succeed: install -m 600 -o alice -g users /root/agent-key.pub /home/alice/.ssh/authorized_keys machine: (finished: must succeed: install -m 600 -o alice -g users /root/agent-key.pub /home/alice/.ssh/authorized_keys, in 0.03 seconds) machine: must succeed: rm /root/agent-key.pub machine: (finished: must succeed: rm /root/agent-key.pub, in 0.01 seconds) machine: must succeed: ssh-agent sh -c 'ssh-add /root/agent-key && rm /root/agent-key && herdr-eternal-ssh -T testbox "ssh -o StrictHostKeyChecking=accept-new -o BatchMode=yes alice@localhost id -un"' < /dev/null Identity added: /root/agent-key (root@machine) machine # [878708.632573] machine systemd[1]: restart-client.service: Deactivated successfully. Warning: Permanently added 'localhost' (ED25519) to the list of known hosts. machine: (finished: must succeed: ssh-agent sh -c 'ssh-add /root/agent-key && rm /root/agent-key && herdr-eternal-ssh -T testbox "ssh -o StrictHostKeyChecking=accept-new -o BatchMode=yes alice@localhost id -un"' < /dev/null, in 0.23 seconds) (finished: run the VM test script, in 11.91 seconds) test script finished in 11.92s cleanup kill NspawnMachine (pid 49) machine # [878709.076636] machine systemd[1]: Created slice Slice /system/sshd. machine # [878709.076686] machine systemd[1]: SSH Host Keys Generation skipped, no trigger condition checks were met. machine # [878709.077509] machine systemd[1]: Started SSH per-connection Daemon ([::1]:47756). machine # [878709.236964] machine sshd-session[1313]: Accepted publickey for alice from ::1 port 47756 ssh2: ED25519 SHA256:23omaKZd2uAaWx867orUfOU5WY8EfN+Lr4Pvgimlcm0 machine # [878709.254390] machine sshd-session[1317]: Received disconnect from ::1 port 47756:11: disconnected by user machine # [878709.254548] machine sshd-session[1317]: Disconnected from user alice ::1 port 47756 machine # [878709.255624] machine systemd[1]: sshd@0-479236-::1:22-::1:47756.service: Deactivated successfully. machine # [878709.256679] machine herdr-eternal-server[1029]: 2026-10-24T13:28:22.067137Z WARN herdr_eternal_server: connection failed: websocket error: WebSocket protocol error: Connection reset without closing handshake peer=127.0.0.1:48160 (finished: cleanup, in 0.36 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