What causes "failed to remove {}" in Hmbown/CodeWhale?

Fix ownership/permissions on the telemetry directory so the current user can delete files within it.

Hmbown/CodeWhale · error · anyhow::Error

failed to remove

Error message

failed to remove {}

What it means

During the public `wipe` operation, the telemetry buffer deletes install-id and state files. If a file exists but `fs::remove_file` fails, the error is captured (first failure wins) and returned with 'failed to remove <path>' context after attempting the remaining deletions.

Solutions

Fix ownership/permissions on the telemetry directory so the current user can delete files within it.
Stop other running instances holding the files open, then retry wipe.
Check for immutable attributes (`lsattr`, `chattr -i`) or Windows file locks.
If a partial wipe is acceptable, remove the reported file manually and re-run wipe.

Example fix

// before
cargo run -- wipe  # as regular user, files owned by root

// after
sudo chown -R $USER ~/.local/share/codewhale/telemetry
cargo run -- wipe

Defensive patterns

Strategy: try-catch

Validate before calling

fn can_delete_dir(dir: &Path) -> bool {
    // delete requires write permission on the directory
    dir.metadata().map(|m| !m.permissions().readonly()).unwrap_or(false)
}

Try / catch

if let Err(e) = telemetry::buffer::wipe(root) {
    if e.to_string().contains("failed to remove") {
        // extract path, chown/stop-holders, then retry once
    }
}

Prevention

Keep a single owning user for telemetry files across runs.
Ensure only one instance runs concurrently before wiping.
Avoid immutable attributes or ACLs on the telemetry directory.

When it happens

Trigger: Calling `wipe(root)` when `install_id_path(root)` or `state_path(root)` exists but cannot be deleted: read-only directory, permission denied, file held by another process, or EIO.

Common situations: Running wipe as a non-root user after telemetry files were created by root; files locked by a concurrently running instance; immutable files (chattr +i); read-only volume on Windows due to open handles.

Understand the failure class

Background: Permission denied / not authorized / 403 Forbidden: access-control rejections when the caller lacks the required role, grant, or ownership — this error's family across 18 libraries.

Related errors

AI-assisted analysis of Hmbown/CodeWhale@73e0f67d83 (2026-09-22). Data as JSON: /api/errors/dd8a254617db5104. Report an issue: GitHub.

Appendix: source

Thrown at crates/telemetry/src/buffer.rs:438

            file.write_all(uuid::Uuid::new_v4().to_string().as_bytes())
                .with_context(|| format!("failed to write {}", tombstone.display()))?;
            file.sync_data()
                .with_context(|| format!("failed to sync {}", tombstone.display()))?;
            drop(file);
        }

        let mut failure: Option<anyhow::Error> = None;
        for path in [buffer_path(root), dryrun_path(root)] {
            if let Err(error) = truncate(&path) {
                failure.get_or_insert(error);
            }
        }
        for path in [install_id_path(root), state_path(root)] {
            if path.exists()
                && let Err(error) = fs::remove_file(&path)
            {
                failure.get_or_insert(
                    anyhow::Error::new(error)
                        .context(format!("failed to remove {}", path.display())),
                );
            }
        }
        match failure {
            Some(error) => Err(error),
            None => Ok(()),
        }
    })
}

/// Clear the tombstone and drop anything buffered before this process was
/// permitted.
///
/// Called by `init` on every arming. Both the exact tombstone generation and a
/// fresh durable permission check must still match while the wipe lock is held.
/// A stale buffer left by an earlier run or by a bug cannot enter the new
/// process's batch.

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