Maps where keys are borrowed from values.
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Realistic first-contribution target: active project, 85 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.
Maps where keys are borrowed from values.
Semantic wrapper for byte count representations
Type-erased Serialize, Serializer and Deserializer traits
A fast and ergonomic concurrent hashmap for read-heavy workloads.
Buddy-alloc is a memory allocator for no-std Rust, used for embedded environments.
Rust crypto w/ zero default deps: BLAKE3, Ed25519/X25519, hashes, MACs, KDFs, AEADs, and checksums w/ full SIMD/ASM acceleration
A significantly faster alternative to the classic Unix cp(1) command, copying large files and directories in a fraction of the time.
Displayed width of Unicode characters and strings according to UAX#11 rules.
Ruby implementation with yet another JIT compiler.
The Rust Playground