fn return_channel(channel_name: String, channels: &mut Arc<Mutex<Vec<Channel>>>, user: &mut User) -> Channel{
	let mut chan_lock = channels.lock();
	let found_channel = chan_lock.mut_iter().filter(|chan| chan.name == channel_name).next();
	match found_channel{
		None => {
			let channel = Channel{name: channel_name, members: vec!(user.clone())};
			chan_lock.push(channel.clone());
			println!("after chan mutation {}", *chan_lock);
			channel
		},
		Some(chan) => {
			println!("Adding new members to channel");
			chan.members.push(user.clone());
			println!("after chan mutation {}", *chan_lock);
			println!("Matched channel: {}", chan);
			chan.clone()
		}
	}
}