foresterre/cargo-msrv

Health v2 · maintenance only

Adoption not part of the score

1241 stars · 45 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

cargo-msrv is a Cargo subcommand that finds, sets, shows, and verifies the Minimum Supported Rust Version (MSRV) of a Rust crate by testing it against different Rust toolchains. It uses bisect or linear search strategies over available stable Rust releases and supports Cargo workspaces and JSON output.

Use cases

• find the minimum supported Rust version for my crate
• verify my project builds with its declared rust-version
• set the MSRV in Cargo.toml automatically
• check which Rust toolchain my dependencies require
• determine the oldest Rust compiler my code compiles with
• list MSRVs of my crate's dependencies

When to choose

• you maintain a Rust library and want to declare an accurate rust-version
• you need to verify CI compatibility across Rust toolchains
• you want to support users on older Rust compilers
• you manage Cargo workspaces with multiple packages needing MSRV checks

When to avoid

• you need to manage non-Rust toolchains or language versions
• you want a general dependency version audit rather than MSRV detection
• your environment lacks rustup, which find and verify require

Facets

cli-tool · maturity active

cli developer-tools testing build-tool developer-tools programming-languages cli rust cross-platform rust msrv cargo toolchain rustup version-compatibility command-line docker

Member repositories

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