cargo-mutants is a mutation testing tool for Rust. It helps you improve your program's quality by finding places where bugs can be inserted causing any tests to fail.
The goal of cargo-mutants is to be easy to run on any Rust source tree, and to tell you something interesting about areas where bugs might be lurking or the tests might be insufficient. (More about these goals.)
To get started:
For more resources see the repository at https://github.com/sourcefrog/cargo-mutants.