this derivation will be built:
  /nix/store/r7z6w80w43dqd2hyp34nkwkz0xhxc0fg-fail-2.drv
building '/nix/store/r7z6w80w43dqd2hyp34nkwkz0xhxc0fg-fail-2.drv' on 'ssh-ng://nix@eliza'
building '/nix/store/r7z6w80w43dqd2hyp34nkwkz0xhxc0fg-fail-2.drv'
fail-2> this build is supposed to fail
error: build of '/nix/store/r7z6w80w43dqd2hyp34nkwkz0xhxc0fg-fail-2.drv' on 'ssh-ng://nix@eliza' failed: Cannot build '/nix/store/r7z6w80w43dqd2hyp34nkwkz0xhxc0fg-fail-2.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/47h46v8m5mw2j5043l0rx37pvz9iqms8-fail-2
       Last 1 log lines:
       > this build is supposed to fail
       For full logs, run:
         nix log /nix/store/r7z6w80w43dqd2hyp34nkwkz0xhxc0fg-fail-2.drv
error: Cannot build '/nix/store/r7z6w80w43dqd2hyp34nkwkz0xhxc0fg-fail-2.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/47h46v8m5mw2j5043l0rx37pvz9iqms8-fail-2