CI flake: Test Suite / test_calling_bench_db_circles_csharp

[clockwork-labs-bot]

Detected by CI Gremlin after a failed GitHub Actions attempt succeeded on rerun.

Tests:

• test_calling_bench_db_circles_csharp

Error:
thread 'test_calling_bench_db_circles_csharp' (55742) panicked at crates/testing/tests/standalone_integration_test.rs:363:61:
called Result::unwrap() on an Err value: Logs:

Failed job runs:

• https://github.com/clockworklabs/SpacetimeDB/actions/runs/36017517560/job/107700204153 (Test Suite, attempt 1 -> 2)

Timeout detection:

• none

Context:

• none

[clockwork-labs-bot]

Diagnosed the exact linked job/attempt: run 36017517560, job 107700204153, Test Suite, attempt 1.

The failing command was cargo test --all --exclude spacetimedb-smoketests --exclude spacetimedb-sdk --exclude spacetimedb -- --test-threads=2 --skip unreal. The suite had one failure: test_calling_bench_db_circles_csharp; the other 19 tests in that binary passed.

Failure signature:

thread 'test_calling_bench_db_circles_csharp' panicked at crates/testing/tests/standalone_integration_test.rs:363:61:
called `Result::unwrap()` on an `Err` value: Logs:
...
{"level":"Error","target":"__spacetimedb__","function":"cross_join_circle_food","message":"Entity not found: 13"}
Caused by:
    Entity not found: 13

Root cause for this attempt: the C# benchmark module initialized and inserted the expected setup data (INSERT FOOD: 50, INSERT ENTITY: 50, INSERT CIRCLE: 500), then the cross_join_circle_food reducer returned Entity not found: 13. The Rust integration harness surfaced that reducer error through ModuleHandle::call_reducer_result and then panicked because bench_call unwraps the result. This looks like a nondeterministic benchmark-module/data-consistency failure, not runner setup or CI infrastructure.

Suggested title: CI flake: benchmarks-cs cross_join_circle_food reports Entity not found

Duplicate search: I searched public issues for test_calling_bench_db_circles_csharp, test_calling_bench_db, bench_call, standalone_integration_test.rs:363, call_reducer_result, Creating table circle, and broader bench db / circles terms. I found only this ticket as an exact Test Flakes match. There are other public C# or Result::unwrap() flakes, but their failure mechanisms are different.

Top duplicate candidate: none close enough to mark as a duplicate.