Easiest way is to install from crates.io.
cargo install brainrust
Alternatively, you can install from github.
git clone https://github.com/EthanYidong/brainrust
cd brainrust
cargo install --path .
Run a brainf*ck file:
bfrust <file>
Compile to a binary file for execution by translating to rust and compiling using rustc:
bfrust <file> -c <out>