Rlox is the tree walking interpreter for the programming language Lox, fromt Part 1 of Robert Nystrom's Crafting Interpreters book book, written in Rust.
Nothing particularly odd. the standard cargo build should sort you
out. You'll need the nightly toolchain.
unit tests are run using cargo test as usual. to run rlox against Bob's canonical Lox test suite follow the instructions here.
The summary is: Go here and install Dart, and then
git clone git://github.com/munificent/craftinginterpreters && cd craftinginterpreters
make get
dart tool/bin/test.dart chap04_scanning --interpreter ../rlox/target/debug/rlox