{
  "type": "object",
  "required" : [
    "status",
    "name"
  ],
  "properties": {
    "status": { "type": "string" },
    "name": { "type": "string" },
    "classname": { "type": "string" },
    "file": { "type": ["string", "null"] },
    "execution_time": { "type": "float" },
    "system_output": { "type": ["string", "null"] },
    "stack_trace":  { "type": ["string", "null"] },
    "attachment_url":  { "type": ["string", "null"] }
  },
  "additionalProperties": false
}