Trusted Language Extensions for PostgreSQL (pg_tle) now supports new crates for PL/Rust such as croaring-rs and num-bigint, enabling you to build more of your extensions on RDS for PostgreSQL. PL/Rust, a PostgreSQL trusted procedural language, combines the performance and resource efficiency of compiled languages like C and provides memory safety so that an unprivileged user can run code in the database.
Source:: Amazon AWS