these 4 derivations will be built:
  /nix/store/cqa18dwnnwdp40nmds9n9mywsq2gh49m-test-script.drv
  /nix/store/cbvhmfmykcrbc5n4p47zqj3cb54pfyc7-driverConfiguration.json.drv
  /nix/store/as6h2ldbqsxg9h6g0w7dm2f81iffknqa-nixos-test-driver-iets-flaketest.drv
  /nix/store/lbsl63jsi865phk5j54jrgd0s55amyxl-container-test-run-iets-flaketest.drv
error: Cannot build '/nix/store/lbsl63jsi865phk5j54jrgd0s55amyxl-container-test-run-iets-flaketest.drv'.
       Reason: builder failed with exit code 143.
       Output paths:
         /nix/store/ysi8h34zvvzxqzkyiwhbn6wvrmhpp1nn-container-test-run-iets-flaketest
       Last 25 log lines:
       > ok   big: tree-meta-in-drv reports an input's metadata under [lint.inputs.lib]
       > machine # [1387716.214985] machine nix-daemon[5008]: accepted connection from pid 5244, user alice (trusted)
       > ok   lock: relative path input has no narHash, as nix writes it
       > machine # [1387737.693987] machine nix-daemon[5008]: accepted connection from pid 5290, user alice (trusted)
       > ok   worktree: clean tree nix never saw, nothing fetched
       > machine # [1387780.491658] machine nix-daemon[5008]: accepted connection from pid 5324, user alice (trusted)
       > ok   worktree: dirty tree nix never saw, nothing fetched
       > machine # [1387791.117101] machine nix-daemon[5008]: accepted connection from pid 5351, user alice (trusted)
       > machine # [1387850.124043] machine nix-daemon[5008]: accepted connection from pid 5368, user alice (trusted)
       > ok   worktree: this repo's packages.default, nothing fetched
       > machine # [1387883.194542] machine nix-daemon[5008]: accepted connection from pid 5392, user alice (trusted)
       > ok   scratch: clean tree
       > machine # [1387891.733043] machine nix-daemon[5008]: accepted connection from pid 5427, user alice (trusted)
       > timeout reached; test terminating...
       > kill NspawnMachine (pid 50)
       > machine: output:
       > Container machine terminated by signal KILL.
       > !!! Traceback (most recent call last):
       > !!!   File "<string>", line 9, in <module>
       > !!!     machine.succeed("runuser -l alice -c 'cd iets && IETS=/nix/store/155kbw1gybnxwspx11shvg3qkcl71va6-iets-0.1.0/bin/iets NIXPKGS=/nix/store/hhfnpma32czw4h3bqpag8dciax0bcmar-source E2E_OFFLINE=1   nu scripts/flaketest.nu' >&2")
       > !!! 
       > !!! RequestedAssertionFailed: command `runuser -l alice -c 'cd iets && IETS=/nix/store/155kbw1gybnxwspx11shvg3qkcl71va6-iets-0.1.0/bin/iets NIXPKGS=/nix/store/hhfnpma32czw4h3bqpag8dciax0bcmar-source E2E_OFFLINE=1   nu scripts/flaketest.nu' >&2` failed (exit code -9)
       > cleanup
       > kill NspawnMachine (pid 50)
       > Terminated                 /nix/store/i823qw0ijk40k6h8dm0bmd7vq7j2l0vi-nixos-test-driver-iets-flaketest/bin/nixos-test-driver -o $out
       For full logs, run:
         nix log /nix/store/lbsl63jsi865phk5j54jrgd0s55amyxl-container-test-run-iets-flaketest.drv