An issue was discovered in the appendix crate through 2020-11-15 for Rust. For the generic K and V type parameters, Send and Sync are implemented unconditionally.
[ { "events": [ { "introduced": "0" }, { "last_affected": "2020-11-15" } ] } ]
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-36469.json"