tinyhumansai/openhuman · error

memory_tree walk: memory driver does not support the retriev

Error message

memory_tree walk: memory driver does not support the retrieval family

What it means

The guard acquired for the walk has as_retrieval() == None: the bound driver does not implement the retrieval family, so FastRetrieveQuery cannot run. Driver capability mismatch, not an argument problem.

Source

Thrown at src/openhuman/memory/query/fast_walk.rs:61

        max_hops,
        time_window_days
    );

    // Routed through the bound driver. `None` for the scope is not
    // "unrestricted": the guard intersects it with the ambient per-turn
    // allowlist, so the source gate still applies.
    let guard = active_memory_guard()
        .await
        .map_err(|e| anyhow::anyhow!("memory_tree walk: {e}"))?;
    let opts = FastRetrieveQuery {
        limit,
        max_hops,
        time_window_days,
    };
    let resp = guard
        .as_retrieval()
        .ok_or_else(|| {
            anyhow::anyhow!("memory_tree walk: memory driver does not support the retrieval family")
        })?
        .fast_retrieve(&query, opts, None)
        .await?;
    log::debug!(
        "[tool][memory_tree] walk returning hits={} total={}",
        resp.hits.len(),
        resp.total
    );
    let json = serde_json::to_string(&resp)?;
    Ok(ToolResult::success(json))
}

#[cfg(test)]
mod tests {
    use super::*;
    use serde_json::json;

    #[tokio::test]

View on GitHub (pinned to 7491200858)

Solutions

1. Bind a driver that implements fast retrieval (tinymemory module)
2. Investigate why the current driver lacks the retrieval family
3. Use a different memory mode supported by the active driver

When it happens

Trigger: Thrown at src/openhuman/memory/query/fast_walk.rs:61 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of tinyhumansai/openhuman@7491200858 (2026-08-17). Data as JSON: /api/errors/f87cd1b79bad6fc0. Report an issue: GitHub.