either • 1.13.0The enum `Either` with variants `Left` and `Right` is a general purpose sum type with two cases.
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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.
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glob • 0.3.1Support for matching file paths against Unix shell style patterns.
proc-macro2 • 1.0.89A substitute implementation of the compiler's `proc_macro` API to decouple token-based libraries from the procedural macro use case.
regex • 1.8.4An implementation of regular expressions for Rust. This implementation uses
finite automata and guarantees linear time matching on all inputs.