Co-author here. If you want to quickly play with this on the command-line with your favourite Yacc grammar, a simple way is to use nimbleparse https://crates.io/crates/nimbleparse ('cargo install nimbleparse' should do the trick; though note that you will probably need to munge your lexer a bit). You can see this in use in the paper itself: the examples at the end are direct output from nimbleparse https://github.com/softdevteam/error_recovery_paper/tree/mas.... Some example grammars are at https://github.com/softdevteam/error_recovery_paper/tree/mas... if you want to get going quickly.

If instead you want to use the full set of Rust libraries, a good place to start is https://softdevteam.github.io/grmtools/master/book/quickstar....