* has anyone here successfully used `noline`?
their own examples bug out badly for me:

- the rp2040 embassy one goes into an infinite loop of printing `Error: IoError\n`
- the plain rp2040 one does not display a prompt or echo the input characters back, but spams a lot of newlines on alphanumeric (non control character) input. Ctrl-D leads to the prompt (`> `) being displayed and input echo working - for one input line. Then it breaks again.
- my own experiments with the esp32c3's USB-JTAG serial don't show the prompt or input echo at all, ever