dev-mutate vs dev-report vs mutatis

Mutation testing for Rust. Wraps cargo-mutants: kill rate, surviving-mutant evidence, kill-rate threshold gating. Detects tests that pass without asserting. Part of the dev-* verification collection.

Structured JSON reports for Rust verification tooling. Stable, versioned wire format with optional terminal, markdown, SARIF, and JUnit XML rendering. Foundation of the dev-* collection.

`mutatis` is a library for writing custom, structure-aware test-case mutators for fuzzers in Rust.