xai-org/grok-build · error

git walk timed out after {}s

Error message

git walk timed out after {}s

What it means

The git gate deduplicates repository-walk work through a single-flight cache; waiters wait on an in-flight walk with a configured walk_timeout. When the walk does not complete within that window and no fresh snapshot is available (or the snapshot's epoch/TTL is stale), the waiting caller receives this timeout error from finish_wait (raised in run).

Source

Thrown at crates/codegen/xai-grok-workspace/src/session/git_gate.rs:381

        }
    }

    async fn finish_wait<T: Clone + 'static>(
        &self,
        key: &FlightKey,
        rx: watch::Receiver<Option<WalkOutcome>>,
        epoch: u64,
    ) -> WaitEnd<T> {
        match tokio::time::timeout(self.inner.walk_timeout, join_inflight::<T>(rx)).await {
            Ok(result) => {
                if epoch == self.current_epoch(&key.root) {
                    WaitEnd::Done(result)
                } else {
                    WaitEnd::Retry(result)
                }
            }
            Err(_) => {
                let timed_out = Err(anyhow!(
                    "git walk timed out after {}s",
                    self.inner.walk_timeout.as_secs()
                ));
                if epoch != self.current_epoch(&key.root) {
                    WaitEnd::Retry(timed_out)
                } else if let Some(value) = self.live_snapshot(key) {
                    WaitEnd::Done(take_typed(&value))
                } else {
                    WaitEnd::Done(timed_out)
                }
            }
        }
    }

    fn publish(
        &self,
        key: &FlightKey,
        tx: watch::Sender<Option<WalkOutcome>>,

View on GitHub (pinned to bc7f02eddd)

Solutions

1. Retry the operation — the gate is designed so a new caller can become the leader and re-run the walk.
2. Increase the walk_timeout configuration to accommodate the repository size/storage latency.
3. Investigate why the walk is slow (repo size, NFS mounts, disk IO) or exclude the slow path from scanning.
4. Check host load — a starved blocking pool can keep the walk from completing even on small repos.

Example fix

// before
let gate = GitGate::new(GateConfig { walk_timeout: Duration::from_secs(5), ..Default::default() });
// after
let gate = GitGate::new(GateConfig { walk_timeout: Duration::from_secs(120), ..Default::default() }); // large monorepo / NFS

// timeout is transient: the walk may succeed on retry with a fresh leader
match gate_op().await {
    Err(e) if e.to_string().contains("git walk timed out") => {
        tokio::time::sleep(Duration::from_millis(500)).await;
        gate_op().await
    }
    other => other,
}

When it happens

Trigger: A caller of run() waits on a git discovery/walk for the same root+kind that takes longer than inner.walk_timeout (git_gate.rs:381): very large repositories, slow/network filesystems (NFS), pathological .git sizes, or a stalled spawn_blocking walk. Also returned to waiters whose epoch advanced during the timeout (then retried instead of silently using stale data).

Common situations: Pointing the workspace at a huge monorepo or a slow mounted network share; system under heavy IO/CPU load starving the blocking walk; walk_timeout configured too low for the repo size; many concurrent requests piling onto one stalled leader task.

Understand the failure class

• Timeouts: ETIMEDOUT, deadlines, and hung requests — what actually expires when a request times out.

Related errors

• git fetch origin {oid} skipped: restore fetch budget exhaust
• git fetch --no-tags origin {spec} timed out after {}s{}{}
• the probe's output did not drain within {DRAIN_GRACE:?}
• wait failed: {body}
• git reset --hard {} failed: {}

AI-assisted analysis of xai-org/grok-build@bc7f02eddd (2026-08-31). Data as JSON: /api/errors/09331493078c5e0a. Report an issue: GitHub.