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cargo pants

cargo-pants is a Cargo subcommand that provides a bill of materials in a project, and any vulnerabilities that are found on those dependencies, powered by Sonatype OSS Index.

Why pants?

Don't you check your pants for holes? Similarly, we think you should check your app's dependencies for vulnerabilities, and that's what cargo-pants does! As well, we provide a Bill Of Materials from parsing your Cargo.lock file, so you can see all the dependencies you are using.


cargo-pants was built with Rust 1.49.0, you should likely start there.


cargo-pants is a Cargo subcommand, and can be installed using cargo install:

$ cargo install cargo-pants

Set an environment variable OSS_INDEX_API_KEY to auth requests with your key.

Once you have installed cargo-pants, you can run it like so:

$ cargo pants


cargo-pants 0.3.2
Glenn Mohre <>
A library for auditing your cargo dependencies for vulnerabilities and checking your pants

    cargo pants [FLAGS] [OPTIONS]

    -h, --help        Prints help information
        --dev         A flag to include dev dependencies
    -v, --verbose     Set the verbosity of the logger, more is more verbose, so -vvvv is more verbose than -v
    -d, --loud        Also show non-vulnerable dependencies
    -m, --no-color    Disable color output
    -V, --version     Prints version information

        --ignore-file <ignore-file>           The path to your .pants-ignore file [default: .pants-ignore]
        --ossi-api-key <oss-index-api-key>    OSS Index API Key [env: OSS_INDEX_API_KEY]
    -s, --pants_style <pants-style>           Your pants style
        --tomlfile <toml-file>                The path to your Cargo.toml file [default: Cargo.toml]

cargo pants can be run in your builds context, or ran separately.

We will also inform you of our opinions of your pants style choice:

$ cargo pants --pants_style JNCO

We are very serious about pants.

There are also two command line flags that affect the output further:

$ cargo pants --loud

This shows all non-vulnerable dependencies for a complete Bill of Materials.

$ cargo pants --no-color

This disables any coloring of the output.

If vulnerabilities are found, cargo-pants exits with status code 3, and prints the Bill Of Materials/Found Vulnerabilities. If there are no issues, it will exit with status code 0.

Excluding Vulnerabilities

Exclusion of vulnerabilities can be done! To accomplish this thus far we have implemented the ability to have a file named .pants-ignore checked in to your repo ideally, so that it would be at the root where you run cargo-pants. Alternatively you can run cargo-pants with a exclusion file at a different location, with an example such as:

$ cargo pants --ignore-file /Users/cooldeveloperperson/code/sonatype-nexus-community/cargo-pants/.pants-ignore

The file should look like:

  "ignore": [{ "id": "78a61524-80c5-4371-b6d1-6b32af349043", "reason": "Insert reason here" }]

The only field that actually matters is id and that is the ID you receive from OSS Index for a vulnerability. You can add fields such as reason so that you later can understand why you whitelisted a vulnerability.

Any id that is excluded will be squelched from the results, and not cause a failure.

IQ Usage

More TBD, but experimental usage for Nexus IQ Server now exists:

cargo-iq 0.3.1
Glenn Mohre <>
A library for auditing your cargo dependencies for vulnerabilities and checking your pants

    cargo iq [FLAGS] [OPTIONS] --iq-application <application>

    -h, --help       Prints help information
        --dev        A flag to include dev dependencies
    -v, --verbose    Set the verbosity of the logger, more is more verbose, so -vvvv is more verbose than -v
    -V, --version    Prints version information

    -a, --iq-application <application>    Specify Nexus IQ public application ID for request
    -t, --iq-attempts <attempts>          Specify Nexus IQ attempts in seconds [default: 60]
    -x, --iq-server-url <server-url>      Specify Nexus IQ server url for request [default: http://localhost:8070]
    -s, --iq-stage <stage>                Specify Nexus IQ stage for request [default: develop]
    -k, --iq-token <token>                Specify Nexus IQ token for request [env: TOKEN=]  [default: admin123]
        --tomlfile <toml-file>            The path to your Cargo.toml file [default: Cargo.toml]
    -l, --iq-username <username>          Specify Nexus IQ username for request [default: admin]

CI Usage

Similar to cargo audit but with more pants, you can run cargo pants on your builds on Travis CI using this example config:

language: rust
  - cargo install --force cargo-pants
  - cargo pants

We use CircleCI to build this project. See our CircleCI config: .circleci/config.yml for how we use cargo-pants in our CI build. This file is also a good reference for a number of useful cargo commands.


We care a lot about making the world a safer place, and that's why we created cargo-pants. If you as well want to speed up the pace of software development by working on this project, jump on in! Before you start work, create a new issue, or comment on an existing issue, to let others know you are!


The code for cargo-pants was largely written by Glenn Mohre, and we want to give ultimate thanks, kudos, congratulations to Glenn for contributing this to the community. Open Source is awesome, and you help make it better!

The cargo-pants logo was grabbed from, specifically from this image.

Code for cargo-pants was influenced by cargo-audit, and we acknowledge we stand on the shoulders of giants.


You can run your local changes without installing the package via:

cargo run --bin cargo-pants pants


cargo run --bin cargo-iq iq --iq-application sandbox-application

Use the commands below to build and install the package locally:

cargo build --all --all-targets
cargo install cargo-pants --force --path .

Release Process

The Continuous Integration build will automatically perform a new release with every commit to the main branch.

To skip performing a release from main be sure your commit message includes: [skip ci].

The Fine Print

It is worth noting that this is NOT SUPPORTED by Sonatype, and is a contribution of ours to the open source community (read: you!)


  • Use this contribution at the risk tolerance that you have
  • Do NOT file Sonatype support tickets related to cargo-pants support in regard to this project
  • DO file issues here on GitHub, so that the community can pitch in

Phew, that was easier than I thought. Last but not least of all:

Have fun creating and using cargo-pants and the Sonatype OSS Index, we are glad to have you here!

Getting help

Looking to contribute to our code but need some help? There's a few ways to get information: