[bug] Local repo index failure fails silently

[msukkari]

Describe the bug

Nothing in logs when local repo fails to index

To reproduce

Create a connection to local repo that is invalid and spin it up. Notice that connection passes and repo indexes with no info in logs

{
    "$schema": "./schemas/v3/index.json",
    "connections": {
        "local-repo": {
            "type": "git",
            "url": "file:///path/to/local/repo"
        }
    }
}

Sourcebot deployment information

Sourcebot version (e.g. v3.0.1): v4.10.6

Additional information

No response