1these 13 derivations will be built:2 /nix/store/6svki8r8xgvgvzcy9jhczs09rllvxxbw-unit-fast-nix-optimise.service.drv3 /nix/store/ylcmf861riwv4h2h9hka171air8xny00-unit-fast-nix-gc.service.drv4 /nix/store/rq81qsp87njn1m1kzz16jy8dsgmmg3b7-system-units.drv5 /nix/store/rvdi025s4xwj0x3m0sb1q1vb7x5g2s0v-etc.drv6 /nix/store/60sj3rqqp5wnw0rzhdqa0kw6ci0sgasf-activate.drv7 /nix/store/z8mm590ys0av5irnb7kqri19b0kmjiky-nixos-system-machine-test.drv8 /nix/store/dc7b5cv9sj7d2dgvkqsnjd8jrp1sic22-closure-info.drv9 /nix/store/pj7ll08z1sf7z4x9dqblk4gnsyr4qfxq-closure-info.drv10 /nix/store/19rmql2aykr18zin5276azbl0p48frjh-run-nixos-vm.drv11 /nix/store/ja92ssjz1rmshfhvkif1ki9sqxa3y4jf-nixos-vm.drv12 /nix/store/cpd6xj4b1gjyvx1k9ciamhvkmvpnc452-driverConfiguration.json.drv13 /nix/store/zcvzr3f8hg04mbr16bbwckdi7y2gz784-nixos-test-driver-fast-nix-gc.drv14 /nix/store/43jx86z33pa1pggbdl5wffpinpfm9va8-vm-test-run-fast-nix-gc.drv15building '/nix/store/ylcmf861riwv4h2h9hka171air8xny00-unit-fast-nix-gc.service.drv'16building '/nix/store/6svki8r8xgvgvzcy9jhczs09rllvxxbw-unit-fast-nix-optimise.service.drv'17unit-fast-nix-gc.service> tribuchet: building on jamie18unit-fast-nix-optimise.service> tribuchet: building on jamie19unit-fast-nix-gc.service> structuredAttrs is enabled20unit-fast-nix-optimise.service> structuredAttrs is enabled21building '/nix/store/rq81qsp87njn1m1kzz16jy8dsgmmg3b7-system-units.drv'22system-units> tribuchet: building on jamie23building '/nix/store/rvdi025s4xwj0x3m0sb1q1vb7x5g2s0v-etc.drv'24etc> tribuchet: building on jamie25building '/nix/store/60sj3rqqp5wnw0rzhdqa0kw6ci0sgasf-activate.drv'26activate> tribuchet: building on jamie27building '/nix/store/z8mm590ys0av5irnb7kqri19b0kmjiky-nixos-system-machine-test.drv'28nixos-system-machine-test> tribuchet: building on jamie