Type erasure for async trait methods
Realistic first-contribution target: active project, 36 open issues, small enough for a newcomer PR to land.
Derived from this repo's Cargo dependencies and activity — difficulty is an estimate from codebase size and scope.
Matched by dependency overlap in Cargo manifests — each card notes the most distinctive crates both projects share.
Type erasure for async trait methods
serde::Deserializer for proc_macro/proc_macro2::TokenStream
Utilities for working with impl traits in Rust.
Procedural macro for bitfields.
A Rust crate that implements "design by contract" via procedural macros
Analysis of various tricky Rust code
A from-scratch JavaScript engine in Rust — std only, zero deps, 100% test262 (53,376/53,376)
Typed, correct GraphQL requests and responses in Rust