env_logger • 0.11.6A logging implementation for `log` which is configured via an environment
variable.
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gcc • 0.3.55**Deprecated** crate, renamed to `cc`
A build-time dependency for Cargo build scripts to assist in invoking the native
C compiler to compile native C code into a static archive to be linked into Rust
code.
num • 0.1.42A collection of numeric types and traits for Rust, including bigint,
complex, rational, range iterators, generic integers, and more!
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pkg-config • 0.3.31A library to run the pkg-config system tool at build time in order to be used in
Cargo build scripts.
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proc-macro2 • 1.0.92A substitute implementation of the compiler's `proc_macro` API to decouple token-based libraries from the procedural macro use case.
rustc-serialize • 0.3.25Generic serialization/deserialization support corresponding to the
`derive(RustcEncodable, RustcDecodable)` mode in the compiler. Also includes
support for hex, base64, and json encoding and decoding.
This crate is deprecated in favor of serde.
version_check • 0.1.5Tiny crate to check the version of the installed/running rustc.
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winapi-i686-pc-windows-gnu • 0.4.0Import libraries for the i686-pc-windows-gnu target. Please don't use this crate directly, depend on winapi instead.
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winapi-x86_64-pc-windows-gnu • 0.4.0Import libraries for the x86_64-pc-windows-gnu target. Please don't use this crate directly, depend on winapi instead.