rustc-ap-rustc_cratesio_shim 431.0.0

Automatically published version of the package `rustc_cratesio_shim` in the rust-lang/rust repository from commit 05b4554e77ef32a97060b1bfffd1f621bf15bb88 The publishing script for this crate lives at: https://github.com/alexcrichton/rustc-auto-publish