debugging-hanging-tests

Hanging tests in Rust often stem from unimplemented!() panics in async tasks, deadlocks, missing shard assignments, or infinite retry loops. Capturing full output with --nocapture helps analyze logs to identify these specific error patterns.

Debug hanging async tests by adding a #[timeout("30s")] attribute to prevent infinite execution, then running with --nocapture to capture all output. Analyze the logs for error patterns like deadlocks or infinite retry loops to find the root cause.

The best way to capture output from a hanging Rust worker executor test is running with the --nocapture flag. This exposes all log data needed to diagnose unimplemented features, deadlocks, or retry loops blocking the executor.

Yes, you can prevent Rust async tests from hanging forever by adding a #[timeout("30s")] attribute to the test function. This safety timeout stops indefinite hangs and allows the test to fail gracefully for analysis.

Deadlocks in Rust async worker executor tests occur when tasks block indefinitely waiting for resources or missing shard assignments. Searching test logs captured via --nocapture for specific error patterns reveals the exact blocking mechanism.

Fix infinite retry loops causing hanging tests by running with --nocapture to expose the retry behavior in logs. Identifying the specific loop pattern allows you to correct the retry logic and unblock the test execution flow.