* perhaps an easy question, anyone familiar with using heapless vec's and converting them to a u8 arrays to transmit over wire?

I'm attempting to use micropb crate, and I have a general protobuf packet getting built into a stream, but when I try to generate the u8 array to hand to a usb driver, it hangs my processor

code is basically this:
```
    let mut stream = Vec::<u8, 64>::new();
    loop {
        let mut encoder = PbEncoder::new(&mut stream);
        let telem = construct_telem(); //Returns proto struct.
        telem.encode_len_delimited(&mut encoder).unwrap();
        info!("making buffer");
        let buf: [u8; 64] = stream.clone().into_array().unwrap(); // this line hangs the processor.
        info!("wrote buffer! {:?}", &buf);
        class.write_packet(&buf).await?;
        ticker.next().await;
```