setup-go/.github/go.json

{
    "problemMatcher": [
        {
            "owner": "go",
            "pattern": [
                {
                    "regexp": "^([^:]*: )?((.:)?[^:]*):(\\d+)(:(\\d+))?: (.*)$",
                    "file": 2,
                    "line": 4,
                    "column": 6,
                    "message": 7
                }
            ]
        }
    ]
}