this derivation will be built:
  /nix/store/zs71s7p6lyxacb4hi36vxdl9r01sdy4b-python3.14-nixbot-tests.drv
error: Cannot build '/nix/store/zs71s7p6lyxacb4hi36vxdl9r01sdy4b-python3.14-nixbot-tests.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/0fvqq631gddm7v8qwr2nbcqqzpvl3hc9-python3.14-nixbot-tests-dist
         /nix/store/vq1da4x3rzvj9rzw2vprzc4wqh2xy2sp-python3.14-nixbot-tests
       Last 25 log lines:
       >         task1 = asyncio.create_task(
       >             orchestrator.handle_change_event(
       >                 ChangeEvent(repo=project, branch="main", commit_sha=sha)
       >             )
       >         )
       >         await eval_runner.started.wait()
       >         build2 = await orchestrator.handle_change_event(
       >             ChangeEvent(repo=project, branch="main", commit_sha=sha, pr_number=4)
       >         )
       >         assert build2 is not None
       >         orchestrator.cancel_events[build2.id_].set()
       >         await task1
       >         cancelled_evals = [e for e in reporter.events if e[0] == "eval-cancelled"]
       >         assert len(cancelled_evals) == 2
       >         finished = [e for e in reporter.events if e[0] == "finished"]
       > >       assert len(finished) == 2
       > E       AssertionError: assert 1 == 2
       > E        +  where 1 = len([('finished', 69, 'cancelled', 0)])
       >
       > nixbot/tests/test_orchestrator.py:2403: AssertionError
       > =========================== short test summary info ============================
       > FAILED nixbot/tests/test_orchestrator.py::test_inflight_share_fans_out_final_status
       > FAILED nixbot/tests/test_orchestrator.py::test_linked_context_reported_on_eval_failure
       > FAILED nixbot/tests/test_orchestrator.py::test_cancel_during_eval_resolves_linked_eval_contexts
       > ================== 3 failed, 830 passed, 12 skipped in 25.22s ==================
       For full logs, run:
         nix log /nix/store/zs71s7p6lyxacb4hi36vxdl9r01sdy4b-python3.14-nixbot-tests.drv