{
  "output": "Env vars:\nCAT=2\nDOG=1\nDOG Ok(\"1\")\nDOG_TYPE Err(NotPresent)\nSET VAR Ok(\"HELLO\")\n",
  "options": {
    "mapdir": [],
    "env": [
      [
        "DOG",
        "1"
      ],
      [
        "CAT",
        "2"
      ]
    ],
    "args": [],
    "dir": []
  }
}