dtolnay

cxx

Safe interop between Rust and C++

anyhow

Flexible concrete Error type built on std::error::Error

thiserror

derive(Error) for struct and enum error types

syn

Parser for Rust source code

cargo-expand

Subcommand to show result of macro expansion

async-trait

Type erasure for async trait methods

watt

Runtime for executing procedural macros as WebAssembly

rust-toolchain

Concise GitHub Action for installing a Rust toolchain

paste

Macros for all your token pasting needs

no-panic

Attribute macro to require that the compiler prove a function can't ever panic

trybuild

Test harness for ui tests of compiler diagnostics

proc-macro2

prettyplease

A minimal `syn` syntax tree pretty-printer

ryu

Fast floating point to string conversion

semver

Parser and evaluator for Cargo's flavor of Semantic Versioning

linkme

Safe cross-platform linker shenanigans

cargo-llvm-lines

Count lines of LLVM IR per generic function

rustversion

Conditional compilation according to rustc compiler version

itoa

Fast function for printing integer primitives to a decimal string

monostate

Type that deserializes only from one specific value

colorous

Color schemes for charts and maps

dissimilar

Diff library with semantic cleanup, based on Google's diff-match-patch

ref-cast

Safely cast &T to &U where the struct U contains a single field of type T.

remain

Compile-time checks that an enum or match is written in sorted order

bootstrap

Bootstrapping rustc from source

install

Fast `cargo install` action using a GitHub-based binary cache

db-dump

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

foreach

serde

Serialization framework for Rust

rust

A work-in-progress programming language; not yet suitable for users