these 7 derivations will be built:
  /nix/store/y7c8kgvgixw508ahbhvd5cm1m20zr2qx-buzz-pnpm-deps.drv
  /nix/store/dmigixr0hr6ay3bc8x37pd5c68w8s3f3-buzz-frontend-0.5.2.drv
  /nix/store/hrl890mlr0ay1js187y9yhl1frcggq9g-buzz-sidecars-0.5.2-vendor.drv
  /nix/store/qnw0whv150lz8dq6ryh929bq0s341syy-buzz-desktop-0.5.2-vendor.drv
  /nix/store/ra6wyabizs7qj3ijsy3dxbv20j95w25g-buzz-sidecars-0.5.2.drv
  /nix/store/xvl7zcr0lx4myrjanj3q9ncs2hz29g6j-buzz-desktop-0.5.2.drv
  /nix/store/qibvjxgi809cn5zlbj9b68ghdwrnplyy-buzz-0.5.2.drv
error: Cannot build '/nix/store/ra6wyabizs7qj3ijsy3dxbv20j95w25g-buzz-sidecars-0.5.2.drv'.
       Reason: builder failed with exit code 101.
       Output paths:
         /nix/store/b5zy7cxgxvgk40xbkny8ngrbgk1yx4ln-buzz-sidecars-0.5.2
       Last 25 log lines:
       > test system_prompt_reaches_llm_system_role ... ok
       > test usage_notification_emitted_before_prompt_response ... ok
       > test steer_rejected_on_empty_prompt ... ok
       > test steer_folds_into_active_turn_without_cancelling ... ok
       > test text_only_end_turn ... ok
       > test system_prompt_absent_no_canary ... ok
       > test rejects_concurrent_prompts ... ok
       >
       > failures:
       >
       > ---- cancelled_turn_with_usage_emits_notification_before_response stdout ----
       >
       > thread 'cancelled_turn_with_usage_emits_notification_before_response' (10864) panicked at crates/buzz-agent/tests/fake_llm.rs:1039:13:
       > assertion `left == right` failed: turn must end with stopReason: cancelled
       >   left: Null
       >  right: "cancelled"
       > note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
       >
       >
       > failures:
       >     cancelled_turn_with_usage_emits_notification_before_response
       >
       > test result: FAILED. 12 passed; 1 failed; 0 ignored; 0 measured; 1 filtered out; finished in 0.51s
       >
       > error: test failed, to rerun pass `-p buzz-agent --test fake_llm`
       For full logs, run:
         nix log /nix/store/ra6wyabizs7qj3ijsy3dxbv20j95w25g-buzz-sidecars-0.5.2.drv
error: Cannot build '/nix/store/qibvjxgi809cn5zlbj9b68ghdwrnplyy-buzz-0.5.2.drv'.
       Reason: 1 dependency failed.
       Output paths:
         /nix/store/8g9i29ii4vg1nx382f91zdz2iqy01m00-buzz-0.5.2