these 40 derivations will be built:
  /nix/store/a59ig5y2ixmz3swf2cjpxcc9kb9hc17h-unit-nix-grpc-daemon.service.drv
  /nix/store/cizqb34c1zh8hzsk4p7c2j53aqx8859m-nix.conf.drv
  /nix/store/c7vcqp8zv2m2ryg4v6bp86wl5jv2piyx-X-Restart-Triggers-nix-daemon.drv
  /nix/store/b30k30v513ac9f4wqsmi0wbwwfn26jm2-unit-nix-daemon.service.drv
  /nix/store/2qb84f1i1wrafkg1s80syib2pvj7klyf-system-units.drv
  /nix/store/5wrba0jkimgpqr3lsyz9zmc55k85nnys-etc.drv
  /nix/store/619wc7ap66qncaq7c0r3iz8ly31pcjmd-unit-nix-grpc-daemon.service.drv
  /nix/store/64kzl4r6x7fmij5jvbzcvjia999lsy6b-system-units.drv
  /nix/store/wbpnhdi9f893jds83y1s02rp1wxipwnd-etc.drv
  /nix/store/s35yhijw0a239bdm781xyrr9qix2552c-activate.drv
  /nix/store/j71nqdafy1im30z1313g6m1qsx8apyq4-nixos-system-worker2-test.drv
  /nix/store/kwijbaz20l6dlchycymaia1m546pwxnr-activate.drv
  /nix/store/cl5kfhsjvdci36iws3fkm1950hhf9y58-nixos-system-worker2-test.drv
  /nix/store/7lhc7mfga6davkd011r603f7n3qazqlg-closure-info.drv
  /nix/store/1prgpy6nblgmxsnv7idrcvcsm4yg9ikh-run-nixos-vm.drv
  /nix/store/x6cd5yxnnqcsni14n66n61szxiipf7hy-nix.conf.drv
  /nix/store/sa2nn7k33d9lkcyyhhhnwlbqsrd7x2n1-X-Restart-Triggers-nix-daemon.drv
  /nix/store/3i3xx2h1akrkzin4pznwlch6n0hififx-unit-nix-daemon.service.drv
  /nix/store/c468ir91611m7ybzr7j6c1k03nbvnr6n-nix.conf.drv
  /nix/store/51bs2p8gg0cd0rdb6p53jm6i1vzcy8d9-X-Restart-Triggers-nix-daemon.drv
  /nix/store/95x2djpzvcaki41a2w2jr54m7l2b17d1-unit-nix-grpc-daemon.service.drv
  /nix/store/9x5naqz4cjdn4nkz55dji8av9qq9smjg-unit-nix-daemon.service.drv
  /nix/store/lz8w5czbxjj807v030m85s797gicawpz-system-units.drv
  /nix/store/pj35v4yhd5ms928742cd2336q8ndai3q-etc.drv
  /nix/store/vk9scx7ynp2srbv2d0il4za2wh63a1mq-activate.drv
  /nix/store/d883gdn88vim583apasj7aryq42ymhxp-nixos-system-worker1-test.drv
  /nix/store/c069h2v5qqs2l2l1khrf4f7xp76bdn10-closure-info.drv
  /nix/store/9w5lwfjsnhjayr2bsnzf4rlwjqdy8djn-run-nixos-vm.drv
  /nix/store/9x68y1mf6i1p5mr912cpcgr5rhrgbc7x-nixos-vm.drv
  /nix/store/c0rgghm4fg044c20qfxxm6860bdlzidl-nixos-vm.drv
  /nix/store/dx5jd42f17wwdwyq2sg6qm4a3vgxpk40-system-units.drv
  /nix/store/ph7n1hvkh2wb9wawglhdsxd9dh6aqws6-etc.drv
  /nix/store/nd2hy3p108fs7sw6d2hw0f83jmw80hia-activate.drv
  /nix/store/sb7ws5sdjnr03vg3wz2h369a488p9by2-nixos-system-client-test.drv
  /nix/store/g0pv501vg2q24nsqixqlr5wh99wd9zfp-closure-info.drv
  /nix/store/l344nnh05cg8irknpj7zkzm13rzg4lf0-run-nixos-vm.drv
  /nix/store/f9522pchbckifkf250jb0m7s7i21sy9r-nixos-vm.drv
  /nix/store/mhqapljvaxbxxwpgwxzpsx5cq09gl7fj-driverConfiguration.json.drv
  /nix/store/bbvml10njl6zarhsqis2w5jkrykdbdp3-nixos-test-driver-nix-grpc-farm.drv
  /nix/store/gyga0r9nzy9rs4pspy8v4vn39r4dh401-vm-test-run-nix-grpc-farm.drv
building '/nix/store/c468ir91611m7ybzr7j6c1k03nbvnr6n-nix.conf.drv'
building '/nix/store/cizqb34c1zh8hzsk4p7c2j53aqx8859m-nix.conf.drv'
building '/nix/store/x6cd5yxnnqcsni14n66n61szxiipf7hy-nix.conf.drv'
building '/nix/store/95x2djpzvcaki41a2w2jr54m7l2b17d1-unit-nix-grpc-daemon.service.drv'
building '/nix/store/a59ig5y2ixmz3swf2cjpxcc9kb9hc17h-unit-nix-grpc-daemon.service.drv'
building '/nix/store/619wc7ap66qncaq7c0r3iz8ly31pcjmd-unit-nix-grpc-daemon.service.drv'
nix.conf> tribuchet: building on jamie
nix.conf> tribuchet: building on jamie
nix.conf> tribuchet: building on jamie
unit-nix-grpc-daemon.service> tribuchet: building on jamie
unit-nix-grpc-daemon.service> tribuchet: building on jamie
unit-nix-grpc-daemon.service> tribuchet: building on jamie
nix.conf> structuredAttrs is enabled
nix.conf> Validating generated nix.conf
nix.conf> structuredAttrs is enabled
nix.conf> Validating generated nix.conf
nix.conf> structuredAttrs is enabled
nix.conf> Validating generated nix.conf
unit-nix-grpc-daemon.service> structuredAttrs is enabled
unit-nix-grpc-daemon.service> structuredAttrs is enabled
unit-nix-grpc-daemon.service> structuredAttrs is enabled
building '/nix/store/c7vcqp8zv2m2ryg4v6bp86wl5jv2piyx-X-Restart-Triggers-nix-daemon.drv'
building '/nix/store/51bs2p8gg0cd0rdb6p53jm6i1vzcy8d9-X-Restart-Triggers-nix-daemon.drv'
building '/nix/store/sa2nn7k33d9lkcyyhhhnwlbqsrd7x2n1-X-Restart-Triggers-nix-daemon.drv'
X-Restart-Triggers-nix-daemon> tribuchet: building on jamie
X-Restart-Triggers-nix-daemon> tribuchet: building on jamie
X-Restart-Triggers-nix-daemon> tribuchet: building on jamie
X-Restart-Triggers-nix-daemon> structuredAttrs is enabled
X-Restart-Triggers-nix-daemon> structuredAttrs is enabled
X-Restart-Triggers-nix-daemon> structuredAttrs is enabled
building '/nix/store/b30k30v513ac9f4wqsmi0wbwwfn26jm2-unit-nix-daemon.service.drv'
unit-nix-daemon.service> tribuchet: building on jamie
building '/nix/store/9x5naqz4cjdn4nkz55dji8av9qq9smjg-unit-nix-daemon.service.drv'
building '/nix/store/3i3xx2h1akrkzin4pznwlch6n0hififx-unit-nix-daemon.service.drv'
unit-nix-daemon.service> tribuchet: building on jamie
unit-nix-daemon.service> tribuchet: building on jamie
unit-nix-daemon.service> structuredAttrs is enabled
unit-nix-daemon.service> structuredAttrs is enabled
unit-nix-daemon.service> structuredAttrs is enabled
building '/nix/store/2qb84f1i1wrafkg1s80syib2pvj7klyf-system-units.drv'
building '/nix/store/64kzl4r6x7fmij5jvbzcvjia999lsy6b-system-units.drv'
system-units> tribuchet: building on jamie
system-units> tribuchet: building on jamie
building '/nix/store/lz8w5czbxjj807v030m85s797gicawpz-system-units.drv'
building '/nix/store/dx5jd42f17wwdwyq2sg6qm4a3vgxpk40-system-units.drv'
system-units> tribuchet: building on jamie
system-units> tribuchet: building on jamie
building '/nix/store/5wrba0jkimgpqr3lsyz9zmc55k85nnys-etc.drv'
building '/nix/store/wbpnhdi9f893jds83y1s02rp1wxipwnd-etc.drv'
etc> tribuchet: building on jamie
etc> tribuchet: building on jamie
building '/nix/store/pj35v4yhd5ms928742cd2336q8ndai3q-etc.drv'
etc> tribuchet: building on jamie
building '/nix/store/ph7n1hvkh2wb9wawglhdsxd9dh6aqws6-etc.drv'
etc> tribuchet: building on jamie
building '/nix/store/s35yhijw0a239bdm781xyrr9qix2552c-activate.drv'
activate> tribuchet: building on jamie
building '/nix/store/kwijbaz20l6dlchycymaia1m546pwxnr-activate.drv'
activate> tribuchet: building on jamie
building '/nix/store/vk9scx7ynp2srbv2d0il4za2wh63a1mq-activate.drv'
activate> tribuchet: building on jamie
building '/nix/store/nd2hy3p108fs7sw6d2hw0f83jmw80hia-activate.drv'
activate> structuredAttrs is enabled
activate> structuredAttrs is enabled
activate> tribuchet: building on jamie
activate> structuredAttrs is enabled
building '/nix/store/j71nqdafy1im30z1313g6m1qsx8apyq4-nixos-system-worker2-test.drv'
nixos-system-worker2-test> tribuchet: building on jamie
activate> structuredAttrs is enabled
building '/nix/store/d883gdn88vim583apasj7aryq42ymhxp-nixos-system-worker1-test.drv'
nixos-system-worker1-test> tribuchet: building on jamie
nixos-system-worker2-test> structuredAttrs is enabled
building '/nix/store/sb7ws5sdjnr03vg3wz2h369a488p9by2-nixos-system-client-test.drv'
nixos-system-client-test> tribuchet: building on jamie
nixos-system-worker1-test> structuredAttrs is enabled
building '/nix/store/cl5kfhsjvdci36iws3fkm1950hhf9y58-nixos-system-worker2-test.drv'
nixos-system-worker2-test> tribuchet: building on jamie
nixos-system-client-test> structuredAttrs is enabled
nixos-system-worker2-test> structuredAttrs is enabled
building '/nix/store/c069h2v5qqs2l2l1khrf4f7xp76bdn10-closure-info.drv'
building '/nix/store/g0pv501vg2q24nsqixqlr5wh99wd9zfp-closure-info.drv'
closure-info> tribuchet: building on jamie
building '/nix/store/7lhc7mfga6davkd011r603f7n3qazqlg-closure-info.drv'
closure-info> structuredAttrs is enabled
closure-info> tribuchet: building on jamie
closure-info> structuredAttrs is enabled
building '/nix/store/9w5lwfjsnhjayr2bsnzf4rlwjqdy8djn-run-nixos-vm.drv'
closure-info> tribuchet: building on jamie
run-nixos-vm> tribuchet: building on jamie
building '/nix/store/l344nnh05cg8irknpj7zkzm13rzg4lf0-run-nixos-vm.drv'
run-nixos-vm> tribuchet: building on jamie
run-nixos-vm> structuredAttrs is enabled
closure-info> structuredAttrs is enabled
run-nixos-vm> structuredAttrs is enabled
building '/nix/store/1prgpy6nblgmxsnv7idrcvcsm4yg9ikh-run-nixos-vm.drv'
building '/nix/store/9x68y1mf6i1p5mr912cpcgr5rhrgbc7x-nixos-vm.drv'
run-nixos-vm> tribuchet: building on jamie
nixos-vm> tribuchet: building on jamie
building '/nix/store/f9522pchbckifkf250jb0m7s7i21sy9r-nixos-vm.drv'
nixos-vm> tribuchet: building on jamie
run-nixos-vm> structuredAttrs is enabled
building '/nix/store/c0rgghm4fg044c20qfxxm6860bdlzidl-nixos-vm.drv'
nixos-vm> tribuchet: building on jamie