Sometime within the last day or so, cargo audit has begun to fail with this error:

> cargo-audit audit
    Fetching advisory database from `https://github.com/RustSec/advisory-db.git`
error: error loading advisory database: parse error: error parsing /home/somers/.cargo/advisory-db/crates/gix-worktree-state/RUSTSEC-2025-0001.md: parse error: TOML parse error at line 13, column 6
   |
13 | os = [
   |      ^
Unrecognized value 'nuttx' for target_os

Environment

FreeBSD amd64, both 15.0-CURRENT and 14.2-RELEASE, both in an environment with a rustup toolchain installed and in an environment without, and using cargo-audit from the OS package, which is built with Rust 1.83.0. I cannot reproduce the problem if I install the tool with cargo install cargo-audit. But I can if I install it with cargo install --locked cargo-audit, and I can reproduce it in Debian 12, too.

Steps to Reproduce

FreeBSD

$ pkg install cargo-audit
$ cd /path/to/literally/anywhere
$ cargo-audit audit

Linux

$ cargo install --locked cargo-audit
$ cd /path/to/literally/anywhere
$ cargo audit

Analysis

The main difference between cargo install and the FreeBSD package build system is that the latter includes a cargo update (unless you specify --locked. So I think that cargo-audit's Cargo.lock file has some dependency that needs to be updated, but I don't know which.