these 40 derivations will be built:
  /nix/store/vq9qz5ldzc4624scwazw9ffyqhy5hxb3-system-path.drv
  /nix/store/a61snzkwgd5x28aqighqmkblqj5mrwly-dbus-1.drv
  /nix/store/3w6vbjj4hhgp97vy6af8vln5pxin1dij-X-Restart-Triggers-dbus-broker.drv
  /nix/store/n5cnacfcksjj7ndp9sr760q7xmzcdgr5-unit-dbus-broker.service.drv
  /nix/store/1mmvs75xqs50zmc0hyihqvm5yv2b58cz-user-units.drv
  /nix/store/4x7nq9l2r42v0dy6il920md1qccq8yy5-unit-tribuchet-worker.service.drv
  /nix/store/jvk009am8jl34yjzadpwk30fx0skblhv-unit-dbus-broker.service.drv
  /nix/store/i8ndf7wqr7m2j7rfrlr8lrjdy6gdbw26-tribuchet-agent.drv
  /nix/store/wazgcn23plpn664c8mrccwvwmhyjx3fi-unit-tribuchet-agent-.service.drv
  /nix/store/7b9pizxxplnp1ih13mn6dkwx30r1snww-system-units.drv
  /nix/store/n6hmvcl65g3wyx8hvwq6s005av73yhci-etc.drv
  /nix/store/0cjg6dxzp3v1zg6yfzwamglzhwiabgbg-activate.drv
  /nix/store/2c1481l0iibjlc9fdpiismcxkp8fbfwv-nix.conf.drv
  /nix/store/0pc2xf8c8w4n42s0d94d584qia4lb72d-X-Restart-Triggers-nix-daemon.drv
  /nix/store/4jpnw2yvchaga6fmxyh32kjaxyf2y95w-nixos-system-worker-test.drv
  /nix/store/b7d2ma5sn777ykr6v649j917j2krx485-tribuchet-e2e-0.1.0.drv
  /nix/store/lzfc5vxvrxz6x8dvf9m9bkys0kb8ssxx-string-references.drv
  /nix/store/qhk7srx3nkg28s5422vyzl1awzn7s33q-closure-info.drv
  /nix/store/1qm5wkkxizxa1cyfw654mgg4cxkbkclq-closure-info.drv
  /nix/store/rhgpfxm4dlqmn6vs67lyhhazgk302kmy-system-path.drv
  /nix/store/zzrs1hjcmjvyd2cj87xrs6csy7s2kizm-dbus-1.drv
  /nix/store/ljx8vaw6gbbp47if6h9k9myr39mhbjhk-X-Restart-Triggers-dbus-broker.drv
  /nix/store/1s266533z35kf9pzax4lfsl4zagrcdp0-unit-dbus-broker.service.drv
  /nix/store/4vavgz0lfb6kinh8acqqmw1lijsvnk9y-unit-tribuchet-hub.service.drv
  /nix/store/g8zcf33h6zacgn6x5vqj4mh7zhanrnzh-unit-dbus-broker.service.drv
  /nix/store/w07pf6grwzrsrdcmy49pzs11h8kf1w0w-unit-nix-daemon.service.drv
  /nix/store/ngpmirv6vy681k0k2sax2cb23z776rv5-system-units.drv
  /nix/store/s0ii3r0r75z2mkyx450a3rh48m12jb6m-user-units.drv
  /nix/store/5p5hdr0kd4xxyrv7xh0l6k3iq2wd7169-etc.drv
  /nix/store/75h24y2r1kqhjflslkk8fs1ky3v3mvbg-activate.drv
  /nix/store/3al42il0c98ndzi7aqhn6dvpqlwy69qm-nixos-system-hub-test.drv
  /nix/store/iwlpkycm11ma7q0dkk2zfnfra2ljazjp-test-script.drv
  /nix/store/ib519mj9r435fb87s044ri56aw5anc3p-closure-info.drv
  /nix/store/w1iq0f93dpbvisjr2wrc17q9lbri67lk-run-nixos-vm.drv
  /nix/store/lj48n04v9azb5nkqhw637h8f7x93r6v3-nixos-vm.drv
  /nix/store/5kyw8y5fkpgg3wbkw4x2cgvirh7g8yb0-run-nixos-vm.drv
  /nix/store/zhm3zzvk64bc0dzlmb3wzc47q1sdyjq1-nixos-vm.drv
  /nix/store/qw5yryw2bqa4117ai6606y0lwiqgdl7y-driverConfiguration.json.drv
  /nix/store/4ccz89r5i07zwbdiy8w7n8slzlq86szf-nixos-test-driver-tribuchet-nspawn.drv
  /nix/store/yvm694f4jhqj4l7mvfqsw7p95s0vfrrm-vm-test-run-tribuchet-nspawn.drv
building '/nix/store/rhgpfxm4dlqmn6vs67lyhhazgk302kmy-system-path.drv'
building '/nix/store/vq9qz5ldzc4624scwazw9ffyqhy5hxb3-system-path.drv'
building '/nix/store/4vavgz0lfb6kinh8acqqmw1lijsvnk9y-unit-tribuchet-hub.service.drv'
building '/nix/store/4x7nq9l2r42v0dy6il920md1qccq8yy5-unit-tribuchet-worker.service.drv'
system-path> tribuchet: building on jamie
system-path> structuredAttrs is enabled
system-path> created 1919 symlinks in user environment
system-path> tribuchet: building on jamie
system-path> structuredAttrs is enabled
system-path> created 2148 symlinks in user environment
unit-tribuchet-hub.service> tribuchet: building on jamie
unit-tribuchet-worker.service> tribuchet: building on jamie
unit-tribuchet-hub.service> structuredAttrs is enabled
unit-tribuchet-worker.service> structuredAttrs is enabled
building '/nix/store/zzrs1hjcmjvyd2cj87xrs6csy7s2kizm-dbus-1.drv'
building '/nix/store/a61snzkwgd5x28aqighqmkblqj5mrwly-dbus-1.drv'
dbus-1> tribuchet: building on jamie
dbus-1> tribuchet: building on jamie
building '/nix/store/wazgcn23plpn664c8mrccwvwmhyjx3fi-unit-tribuchet-agent-.service.drv'
unit-tribuchet-agent-.service> tribuchet: building on jamie