Determine whether characters have the XID_Start or XID_Continue properties

Safe interop between Rust and C++

Parser for Rust source code

Rust quasi-quoting

Type-erased Serialize, Serializer and Deserializer traits

Graph the number of crates that depend on your crate over time

Library for scripting analyses against crates.io's database dumps

Runtime for executing procedural macros as WebAssembly

Serde serializable and deserializable trait objects

Const TypeId and non-'static TypeId

Test harness for ui tests of compiler diagnostics

Make any value Sync but only available on its original thread

derive(Error) for struct and enum error types

TARGET and HOST triples

Graph history of GitHub stars of a user or repo over time

Checksum of a directory tree

Serde Visitor for deserializing untagged enums

Serde serializer for generating Starlark build targets

Serializer and Deserializer adapters that avoid stack overflows by dynamically growing the stack

Serialize and deserialize C-like enum as underlying repr

Find out about keys that are ignored when deserializing data

Macro to repeat sequentially indexed copies of a fragment of code

Parser and evaluator for Cargo's flavor of Semantic Versioning

Compile-time temporary directory shared by multiple crates and erased by `cargo clean`

Fast floating point to string conversion

Conditional compilation according to rustc compiler version

Parser for CARGO_ENCODED_RUSTFLAGS