Relation to nightly Rust

还没有人认领这个 Issue。

Thanks for building these crates! I am tempted to experiment with them, most likely in PyO3's CI initially - we have a [`pyo3-ffi-check`](https://github.com/PyO3/pyo3/tree/20246a895718baa603f836b187b498cedc6941ca/pyo3-ffi-check) helper which compares our hand-maintained FFI to bindgen (because reasons).

Currently has a ton of hacks where I build docs html and parse that, which is painful plus has shortcomings like case-insensitive filesystems meaning I can't easily check the difference between e.g. `Py_INCREF` and `Py_IncRef` symbols.

I understand that the rustdoc JSON is still not stable. Do these crates automate the process of pinning / selecting the right nightly toolchain to get "stable" rustdoc JSON processing?

从 issue 中链接的 pyo3-ffi-check helper 开始，检查它目前如何依赖生成的文档 HTML。然后检查 crates 的 rustdoc JSON 和 nightly-toolchain 入口点，以确定是否支持固定或选择兼容的 nightly。完成意味着记录当前的能力；如果不存在，则定义所需的自动化和兼容性行为。

由索引模型根据 Issue 内容生成。