stderr output of ShellTask is base64 encoded

[peejaychilds]

Using the following configuration

{
    "host": "127.0.0.1",
    "port": 9900,
    "reload_env": true,
    "endpoints": [
    {
      "path": "/test",
      "methods": {
        "GET": {
          "type": "shell",
          "config": {
            "shell": "/bin/bash",
            "commands": [
              {
                "command": "./error.sh",
                "format": "json"
              }
            ]
          }
        }
      }
    }
    ]
}

and the following test script

#!/bin/sh
echo 'some error response' 1>&2
exit 1

I see the output of stderr is base64 encoded.

Is this expected?

[vagrant@localhost ~]$ ./goexpose-linux-amd64-1.0.0 --config test.json &
[1] 28404

[vagrant@localhost ~]$ curl http://localhost:9900/test
{"message":"OK","result":[{"error":{"Stderr":"c29tZSBlcnJvciByZXNwb25zZQo="},"message":"OK"}],"status":200}

[vagrant@localhost ~]$ echo c29tZSBlcnJvciByZXNwb25zZQo= | base64 --decode
some error response