Merge pull request #1326 from sourcefrog/main

Add cargo-mutants

README.md

@@ -671,8 +671,10 @@ See also [Are we (I)DE yet?](https://areweideyet.com/) and [Rust Tools](https://
   * [mockiato](https://crates.io/crates/mockiato) — A strict, yet friendly mocking library for Rust 2018 [![build badge](https://api.travis-ci.com/mockiato/mockiato.svg?branch=master)](https://app.travis-ci.com/github/mockiato/mockiato)
   * [mockito](https://crates.io/crates/mockito) — HTTP mocking [![build badge](https://api.travis-ci.org/lipanski/mockito.svg?branch=master)](https://travis-ci.org/lipanski/mockito)
   * [nrxus/faux](https://github.com/nrxus/faux/) [![Latest Version](https://img.shields.io/crates/v/faux.svg)](https://crates.io/crates/faux) — A library to create mocks out of structs. ![build](https://github.com/nrxus/faux/workflows/test/badge.svg?branch=master)
+* Mutation Testing
+  * [cargo-mutants](https://github.com/sourcefrog/cargo-mutants) [[cargo-mutants](https://crates.io/crates/cargo-mutants)] - Finds inadequately tested code by injecting mutations, no source changes required. [![build badge](https://github.com/sourcefrog/cargo-mutants/actions/workflows/tests.yml/badge.svg?branch=main&event=push)](https://github.com/sourcefrog/cargo-mutants/actions/workflows/tests.yml?query=branch%3Amain)
+  * [mutagen](https://github.com/llogiq/mutagen) [[mutagen](https://crates.io/crates/mutagen)] — A source-level mutation testing framework (nightly only) [![build badge](https://api.travis-ci.org/llogiq/mutagen.svg?branch=master)](https://travis-ci.org/llogiq/mutagen)
 * Property Testing and Fuzzing
-  * [mutagen](https://github.com/llogiq/mutagen) [[mutagen](https://crates.io/crates/mutagen)) — A source-level mutation testing framework (nightly only) [![build badge](https://api.travis-ci.org/llogiq/mutagen.svg?branch=master)](https://travis-ci.org/llogiq/mutagen)
   * [proptest](https://crates.io/crates/proptest) — property testing framework inspired by the [Hypothesis](https://hypothesis.works/) framework for Python [![build badge](https://api.travis-ci.org/altsysrq/proptest.svg?branch=master)](https://travis-ci.org/altsysrq/proptest)
   * [quickcheck](https://crates.io/crates/quickcheck) — A Rust implementation of [QuickCheck](https://wiki.haskell.org/Introduction_to_QuickCheck1) [![build badge](https://api.travis-ci.org/BurntSushi/quickcheck.svg?branch=master)](https://travis-ci.org/BurntSushi/quickcheck)
   * [rust-fuzz/afl.rs](https://github.com/rust-fuzz/afl.rs) — A Rust fuzzer, using [AFL](https://lcamtuf.coredump.cx/afl/) [![build badge](https://api.travis-ci.org/rust-fuzz/afl.rs.svg?branch=master)](https://travis-ci.org/rust-fuzz/afl.rs)