Cannot use call command

[sb8244]

I am trying to use https://github.com/exciting-io/slack-bot-server/blob/master/lib/slack_bot_server/remote_control.rb#L57. My invocation looks like:

server.call(key, 'users.list', [])

When process_instruction handles this, the following occurs:

    1: class SlackBotServer::Server
    2:   def process_instruction(instruction)
 => 3:     binding.pry
    4:     type, *args = instruction
    5:     bot_key = args.shift
    6:     if type.to_sym == :add_bot
    7:       log "adding bot: #{bot_key} #{args.inspect}"
    8:       add_bot(bot_key, *args)

[1] pry(#<SlackBotServer::Server>)> instruction
=> ["call", ["XXX", "users.list", []]]
[2] pry(#<SlackBotServer::Server>)> type, *args = instruction
=> ["call", ["XXX", "users.list", []]]
[3] pry(#<SlackBotServer::Server>)> args
=> [["XXX", "users.list", []]]
[4] pry(#<SlackBotServer::Server>)> args.shift
=> ["XXX", "users.list", []]

The entire array content is being used for bot_key rather than just the key part of it. The call command fails due to this.

I'm using ruby 2.3.1.