It is nasty code! I started refactoring before I hit some struct-alignment bugs (fixed on later Rust versions): https://github.com/tcr/rust-todomvc/blob/tcr-wip/src/main.rs

The parent navigation needs to be replaced by a jQuery-like .ancestors() macro.

This was an MVP so I wasn't focused on code quality over features; but I'm also learning Rust for the first time, so it came out less than impressive :)