Details are at https://github.com/RustSec/advisory-db/pull/30
ID: RUSTSEC-2018-0003
Crate: smallvec
Version: 0.6.2
Date: 2018-07-19
URL: https://github.com/servo/rust-smallvec/issues/96
Title: Possible double free during unwinding in SmallVec::insert_many
Solution: upgrade to: >= 0.6.3
So I just saw that, but my ulterior motive is to mention that running cargo audit as part of CI was exciting when my build failed because it caught something 
. Oh ya, it's also proof that cargo audit works. Thank you guys 
!