Mosh crash

Hello,

Love iSH. Love your work.

I'm on `latest-stable` (3.22.2 currently) and I'm getting a consistent crash when launching Mosh. The error, which is not very useful, is:
```
Died at /usr/bin/mosh line 320.
```

This happens whenever a connection is attempted. `mosh -h` displays the help output.

I might report this upstream too, just in case.

Much thanks <3.