[quambo]

I've just found a solution that works pretty nicely for me: Coda. It has an integrated SSH terminal, it has FTPS and uploads changes to files on save and it has support for many languages (don't know about rust though). It also saves your terminals and open files within each project so you can easily switch around.

Coda on iPad + Raspberry Pi (or an old Mac mini) make a pretty nice dev environment.

If you are more of a VIM guy, something like Terminus works well too.