cargo-ensure-no-default-features

Eliminate superfluous features in a Rust project.

This tool checks that dependencies in Cargo.toml have default-features = false. This can improve build times by avoiding unnecessary features being enabled by default.

If both [workspace.dependencies] and [dependencies] are present in the same manifest, both sections are checked.

Install with:

cargo install cargo-ensure-no-default-features

And use with:

cargo ensure-no-default-features

The --manifest-path option lets you specify an explicit Cargo.toml file to check. Without this option, it defaults to the Cargo.toml in the current directory.

The --exceptions (-e) option lets you specify a comma-separated list of dependencies to exclude from the default-features check. This is useful for dependencies that you explicitly want to have default features enabled.