Custom allocators are coming in Rust: https://github.com/rust-lang/rfcs/pull/1398 https://github.com/rust-lang/rfcs/pull/1398 While I haven’t had a need for th

Custom allocators are coming in Rust: https://github.com/rust-lang/rfcs/pull/1398 https://github.com/rust-lang/rfcs/pull/1398 While I haven’t had a need for this myself, I believe you can use that feature on nightly today.