Please check build logs and if you believe this is docs.rs' fault, report into this issue report.
libffi-sys-rs: Low-level Rust bindings for libffi
The C libffi library provides two main facilities: assembling calls to functions dynamically, and creating closures that can be called as ordinary C functions. This is an undocumented wrapper, generated by bindgen, intended as the basis for higher-level bindings, but you can see the C libffi documentation.
If you clone this repository in order to build the library, be sure to do a recursive clone, as we include C libffi as a submodule.
See the libffi crate for a higher-level API.
[dependencies] libffi-sys = "0.7.0"
extern crate libffi_sys;
to your crate root.
If you clone from github, be sure to
clone --recursive to get the C
This crate supports Rust version 1.30 and later.