some sample code below...

cOpts := gocb.ClusterOptions{
        Authenticator: gocb.PasswordAuthenticator{
            Username: "user",
            Password: "pw",
        },
    }

    cluster, err := gocb.Connect("couchbase://my.dev.server.net/", cOpts)
    if err != nil {
        panic(err)
    }

    qOpts := gocb.QueryOptions{}

    // create query
    queryStr := "SELECT * FROM myBucket WHERE id = '123456789'"

    rows, err := cluster.Query(queryStr, &qOpts)
    if err != nil {
        panic(err)
    }

    fmt.Printf("rows: %v\n", rows)

    for rows.Next() {
        var intfc interface{}
        err = rows.Row(&intfc)
        if err != nil {
            panic(err)
        }
        fmt.Printf("interface result: %v\n", intfc)

    }

The couchbase server is on 5.1.

I am either getting...

panic: ambiguous timeout | {"statement":"SELECT * FROM myBucketName WHERE id = '123456789'","client_context_id":"cdd52a06-c7a5-4d3d-8r26-99fg806d559e"}

...when I run the above code.
OR
If I put in the following lines after the gocb.Connect(... I get the error that is after that.

err = cluster.WaitUntilReady(25*time.Second, &gocb.WaitUntilReadyOptions{DesiredState: gocb.ClusterStateOnline})
if err != nil {
    panic(err)
}

...error...

panic: unambiguous timeout | {"InnerError":{"InnerError":{"InnerError":{},"Message":"unambiguous timeout"}},"OperationID":"WaitUntilReady","Opaque":"","TimeObserved":25000263891,"RetryReasons":["NOT_READY"],"RetryAttempts":105,"LastDispatchedTo":"","LastDispatchedFrom":"","LastConnectionID":""}

NOTE: I changed the Username, Password, Server/connStr, bucket, and the id just for example purposes here.

What am I missing here?