elastic: v5 connect panic: no Elasticsearch node available

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Which version of Elastic are you using?

[ ] elastic.v5 (for Elasticsearch 5.x)

Please describe the expected behavior

panic: no Elasticsearch node available

Please describe the actual behavior

	// Create a client
	client, err := elastic.NewClient(elastic.SetURL("http://192.168.33.10:9200"))
	if err != nil {
		panic(err)
	}

curl -s -XGET 'http://192.168.33.10:9200/_nodes/http?pretty=1'
{
  "_nodes" : {
    "total" : 1,
    "successful" : 1,
    "failed" : 0
  },
  "cluster_name" : "es-search",
  "nodes" : {
    "qoa_gnFlTtSPjUiQWH_I9g" : {
      "name" : "node-1",
      "transport_address" : "10.0.2.15:9300",
      "host" : "10.0.2.15",
      "ip" : "10.0.2.15",
      "version" : "5.0.0",
      "build_hash" : "253032b",
      "roles" : [
        "master",
        "data",
        "ingest"
      ],
      "http" : {
        "bound_address" : [
          "[::]:9200"
        ],
        "publish_address" : "10.0.2.15:9200",
        "max_content_length_in_bytes" : 104857600
      }
    }
  }
}

Any steps to reproduce the behavior?

Run the code above