these 41 derivations will be built:
  /nix/store/wkif5slfc7cy59ad2jbm89am54jknj8m-system-path.drv
  /nix/store/7248a0m907mdrz5micm33mjnmvxa917z-dbus-1.drv
  /nix/store/4p94ba7kxscfdmbyaii68zd79wgl2saz-X-Restart-Triggers-dbus-broker.drv
  /nix/store/c36agdmkmvq3c4q9hiqcdmw9mlf78kg1-unit-dbus-broker.service.drv
  /nix/store/hf64r2bb4g2f2j56flp2rp2ikhd95f2v-user-units.drv
  /nix/store/44kpj9ryiw5ndz5f7v6v6af09zzswiip-unit-dbus-broker.service.drv
  /nix/store/6lwg6ph9hy9grvzj1p1pcmrck52jknk0-unit-tribuchet-worker.service.drv
  /nix/store/n9mvf0hizpfic76p5vb9sgr8czx1a0il-tribuchet-agent.drv
  /nix/store/rhpzsdk4g5pxxq41h1z4fldc3s1nqqld-unit-tribuchet-agent-.service.drv
  /nix/store/s9x1hsgqlachmjh3wyaiwnn3405160bx-system-units.drv
  /nix/store/ys600w76vk0izh3m1yahqpr0sdbrpflq-etc.drv
  /nix/store/1cx7l5skmljhcnk851qdj3cc0lwl5cnm-activate.drv
  /nix/store/bvs1911r7w2n2gxk932q794ld485zm90-nixos-system-worker-test.drv
  /nix/store/xlzmp2v50czr9y6lzjiq6xwz9y2c2vpv-tribuchet-e2e-0.1.0.drv
  /nix/store/3849fy5irdbw3fcjqq8ncqg9gsv5pdjq-string-references.drv
  /nix/store/swlfi0fbqvnnjrf0f0fsxbf887qkkql1-closure-info.drv
  /nix/store/ka4fdbw9rhn5cbphwv57b3zk0158snr2-closure-info.drv
  /nix/store/z3zdvhkv7vkbxm8rp3hpjp9yjl06z0sg-run-nixos-vm.drv
  /nix/store/03h3xbyi3wz0gzysq1s7zlgcd0dfdkdf-nixos-vm.drv
  /nix/store/8gir63jl6nh05n8ldc5dw0ksyd303hnl-tribuchet-attach.drv
  /nix/store/a3nzp0mi2s4dp4c4j7q0dr7igl6c3bql-nix.conf.drv
  /nix/store/65zg0bmpxqpzn7w6bjw7vsrsqfgnbszi-X-Restart-Triggers-nix-daemon.drv
  /nix/store/9g54ha4f8qbz1w4j121kqgwxy4gkz9w4-unit-nix-daemon.service.drv
  /nix/store/lvcb9js6xhynr21qgcl8v7lh99n1qc5p-unit-tribuchet-hub.service.drv
  /nix/store/i6m49pzsb0id4vz7akrr4likzjgjazdy-system-path.drv
  /nix/store/fm1jdan6zw0knph67j7vliy0i3pl6dpr-dbus-1.drv
  /nix/store/61cvlamhdgp9xa5bpflb3crqa039p4yg-X-Restart-Triggers-dbus-broker.drv
  /nix/store/zgiiw7m38ilnsvzzckh1s64s2fif7ayc-unit-dbus-broker.service.drv
  /nix/store/8sk7hyv32xbykj690nspzj4ra3synkkl-system-units.drv
  /nix/store/p53rqv9j2shq6kwxaizjl3v1zjjdlf6c-unit-dbus-broker.service.drv
  /nix/store/kcbdghc5hifx82kq4xa6vvqrx2v27sss-user-units.drv
  /nix/store/hwsn3pw8v867hv6y7hmalkqf25sax5zz-etc.drv
  /nix/store/pbf9cxbixzlj8dss1xgxjszkriwm5i7d-activate.drv
  /nix/store/n1liab22hidqpkcffddjj8s0ak3r3n8k-nixos-system-hub-test.drv
  /nix/store/v74ym4aiwr73wikqchvmrar91xviy6my-closure-info.drv
  /nix/store/y448frj4s4a1jhkz5hdvvid8w67jir07-run-nixos-vm.drv
  /nix/store/0m809ckvjxpwyf4d6vhl4sv1xsrjp69k-nixos-vm.drv
  /nix/store/x12gqcc2hw4d7cn1slg61ls5xdd94d9p-test-script.drv
  /nix/store/920f1h1a411n21dn6yhzgcfrha49zr06-driverConfiguration.json.drv
  /nix/store/rxvykvfvfwsbd2ssavgfmsg00msa7p03-nixos-test-driver-tribuchet-nspawn.drv
  /nix/store/0w2wg2r7pnc0zdbp6cfyyrag6sxwd5hd-vm-test-run-tribuchet-nspawn.drv
building '/nix/store/lvcb9js6xhynr21qgcl8v7lh99n1qc5p-unit-tribuchet-hub.service.drv'
building '/nix/store/6lwg6ph9hy9grvzj1p1pcmrck52jknk0-unit-tribuchet-worker.service.drv'
unit-tribuchet-hub.service> structuredAttrs is enabled
unit-tribuchet-worker.service> structuredAttrs is enabled
building '/nix/store/hwsn3pw8v867hv6y7hmalkqf25sax5zz-etc.drv'
building '/nix/store/pbf9cxbixzlj8dss1xgxjszkriwm5i7d-activate.drv'
building '/nix/store/n1liab22hidqpkcffddjj8s0ak3r3n8k-nixos-system-hub-test.drv'
nixos-system-hub-test> structuredAttrs is enabled
building '/nix/store/v74ym4aiwr73wikqchvmrar91xviy6my-closure-info.drv'
closure-info> structuredAttrs is enabled
building '/nix/store/y448frj4s4a1jhkz5hdvvid8w67jir07-run-nixos-vm.drv'
building '/nix/store/0m809ckvjxpwyf4d6vhl4sv1xsrjp69k-nixos-vm.drv'