these 52 derivations will be built: /nix/store/0cfcwf8kqpz5la710q4pbl5dp3y5a1ia-unit-test14.service.drv /nix/store/0ysy5psdgv4dh4i6ymikcznlakwyzcli-unit-test19.service.drv /nix/store/105hi60893m1bjhdwibzd21j8f6f100m-unit-concurrent-driver.service.drv /nix/store/1qzfpybrryvsfvfqwb9hwi7fpvlpds2g-unit-test11.service.drv /nix/store/1ssqzdp2891g3d3wkcncr10h1raczjq1-unit-test17.service.drv /nix/store/2fqd99bs4lbhq3h6hwswwfavq51lbljr-unit-test2.service.drv /nix/store/2n2i9dxyddbjkw6ng54f3vm4xm8ws2p4-unit-test15.service.drv /nix/store/2p3ymaf4brrpa7i9h5dwl6lg65l93cy1-unit-test26.service.drv /nix/store/jhp4hl286icz6b3dw8227bp6s6di006v-test26-string-contexts.txt.drv /nix/store/pjh00ql43g8fqdidj42f7zwpagq3bq9m-closure-info.drv /nix/store/cfzgvgin307j2bi1r6qs42164s97bwld-test26-chroot-paths.drv /nix/store/nyakiwpkjsy1cscfcvbh8xbviy5al2x2-system-path.drv /nix/store/cvmwjxsgak1gq8lzgrdaw0vcvqmy65ba-dbus-1.drv /nix/store/p8x9b4f4y2d1rpf92wh3mfwbasd5dnf9-X-Restart-Triggers-dbus-broker.drv /nix/store/qz9sq8q06gf4zk571myaf5508prn5zb0-unit-dbus-broker.service.drv /nix/store/35fnzmswfhk5wrfricqsik6jpprjvjvk-user-units.drv /nix/store/3wz350f2hyrqba4wj6wp76ynyjbkjkml-unit-test1.service.drv /nix/store/81d5kfmawl425dprhw23dkf71gninkh5-unit-test20.service.drv /nix/store/dhppb2pnlxxfzqi4a1ypcsvb9wgmhfpf-unit-dbus-broker.service.drv /nix/store/dkk8hrbky9zs2ny3dp4c2ygpdvl8hyf7-unit-test9.service.drv /nix/store/hk5irmh7hc6adg6vmhiyx86hxdm5834y-unit-test6.service.drv /nix/store/ik91bf1fs97bdwaar0dcc1i40yk9k8sr-unit-test12.service.drv /nix/store/j85mdqjfbq0fpxdmchb8shhiys3lllr6-unit-test3.service.drv /nix/store/jrnhjg03r22v7jc4ff8mwasgmdvgzjqz-unit-concurrent-client-.service.drv /nix/store/kjql1ms1h84s5c94c652g1f8dld52v3p-unit-test25.service.drv /nix/store/mninvz81vf1fdrpdhs1bkwcam8zab6aa-unit-test5.service.drv /nix/store/n2kmzl3bzdk1bm6198ykvjhgbbbxalgq-unit-test24.service.drv /nix/store/nl0j29852lw8h16v50k5f6y32h69r0im-unit-register-nix-paths.service.drv /nix/store/rh3ic1sblkyypdn94rrw71pj992yiacw-unit-test8.service.drv /nix/store/rsr0cwspvh4h5zqy86jhn5qaps1c9ps2-unit-test23.service.drv /nix/store/sc92kpni3xg4yhjvl3jwnblar1039x8c-unit-test21.service.drv /nix/store/vxlrgargmbhagclxynicrqaf1d80x310-unit-test7.service.drv /nix/store/w3la8xwfx0xka9x5k79npiq1zjpjrsmm-unit-test27.service.drv /nix/store/w3pb1v3c68j754k3x4ch4wf4dv325ll5-unit-test10.service.drv /nix/store/wqgf75ba00gf1kxkz7hwkqgnn6yja095-unit-test22.service.drv /nix/store/x8sa05qfsawc3sfcfyqnhwniimag8bbr-unit-test13.service.drv /nix/store/xmn5wmh57rw5kv14d08n04yrzaayxsrz-unit-test4.service.drv /nix/store/y5xcmh6vvy7bsbdlsndk8i0kgdx2d88p-unit-test18.service.drv /nix/store/z18r8biyh449yxh03n45pr8s70ahlxz2-unit-test16.service.drv /nix/store/8vd3kkyv2la5scbmf2gn2d7c2gdmqz3d-system-units.drv /nix/store/gc4jh7bq54hnq418xjp6za6g7fxdcvrk-user-generators.drv /nix/store/ifxiw316k8c3hhydwwbg0834bkkb02pd-system-shutdown.drv /nix/store/y7627apmq06vpyhjrdnysm0l2csg0mks-system-generators.drv /nix/store/nrfr8bb4yyf41i6imdy10cf0i8r0ydms-etc.drv /nix/store/9211c65iy6yja3ym74hyfis1m3fg1ghm-activate.drv /nix/store/svfmpr7hhwmazid9p5bqihdglsv8mzqr-nixos-system-machine-test.drv /nix/store/rf4hwl5b3ngnfzchxnbv9wrva9fd0fzi-closure-info.drv /nix/store/q9gnxkhssg2wgfcsp4f1mcqfskvq355k-run-nixos-vm.drv /nix/store/601xfv3rb8z97vr4dkr4kq1bncnplh5x-nixos-vm.drv /nix/store/bbh4m0k28sgl8cmmgjlcl67mm1g7l34w-driverConfiguration.json.drv /nix/store/nn6cj4myypp8bkmx8hnxws02ncp5pkrd-nixos-test-driver-systemd-confinement.drv /nix/store/kbm4qs08mrdlhd65dr9pgcfxvdm7gwns-vm-test-run-systemd-confinement.drv error: Cannot build '/nix/store/kbm4qs08mrdlhd65dr9pgcfxvdm7gwns-vm-test-run-systemd-confinement.drv'. Reason: builder failed with exit code 1. Output paths: /nix/store/zwj44agpmc6a5brrqk50g6xcnnyvrq0r-vm-test-run-systemd-confinement Last 25 log lines: > machine # [ 112.387237] 3kynw884ljwr5w1wjjh8qhykwdamxp7m-concurrent-runner[719]: 2. Some other expensive computation could be running during input generation. For example, if @st.composite or st.data() is interspersed with an expensive computation, HealthCheck.too_slow is likely to trigger. If this computation is unrelated to input generation, move it elsewhere. Otherwise, try making it more efficient, or disable this health check if that is not possible. > machine # [ 112.400134] 3kynw884ljwr5w1wjjh8qhykwdamxp7m-concurrent-runner[719]: If you expect input generation to take this long, you can disable this health check with @settings(suppress_health_check=[HealthCheck.too_slow]). See https://hypothesis.readthedocs.io/en/latest/reference/api.html#hypothesis.HealthCheck for details. > machine # [ 112.469273] systemd[1]: concurrent-driver.service: Main process exited, code=exited, status=1/FAILURE > machine # [ 112.471847] systemd[1]: concurrent-driver.service: Failed with result 'exit-code'. > machine # [ 112.474649] systemd[1]: Failed to start Driver for orchestrating concurrent processes. > machine # [ 112.475952] systemd[1]: Dependency failed for Multi-User System. > machine # [ 112.477300] systemd[1]: multi-user.target: Job multi-user.target/start failed with result 'dependency'. > machine # [ 112.489133] systemd[1]: Startup finished in 1.072s (kernel) + 3.568s (initrd) + 1min 47.847s (userspace) = 1min 52.488s. > machine # [ 112.490838] systemd[1]: concurrent-driver.service: Consumed 3.751s CPU time over 1min 33.282s wall clock time, 49.3M memory peak, 300K written to disk, 882B incoming IP traffic, 884B outgoing IP traffic. > !!! Traceback (most recent call last): > !!! File "", line 1, in > !!! machine.wait_for_unit("multi-user.target") > !!! > !!! RequestedAssertionFailed: unit "multi-user.target" is inactive and there are no pending jobs > cleanup > kill QemuMachine (pid 45) > machine # qemu-system-aarch64: terminating on signal 15 from pid 39 (/nix/store/lq2fsnmg0q3y0vlxn91w8s8wvj1m6fld-python3-3.14.8/bin/python3.14) > machine # [2026-10-22T03:00:37Z INFO virtiofsd] Client disconnected, shutting down > machine # [2026-10-22T03:00:37Z INFO virtiofsd] Client disconnected, shutting down > machine # [2026-10-22T03:00:37Z INFO virtiofsd] Client disconnected, shutting down > (finished: cleanup, in 0.33 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 For full logs, run: nix log /nix/store/kbm4qs08mrdlhd65dr9pgcfxvdm7gwns-vm-test-run-systemd-confinement.drv