rustc-ap-rustc_cratesio_shim 264.0.0

Automatically published version of the package `rustc_cratesio_shim` in the rust-lang/rust repository from commit 2d1065bc2a4a79e553e87cb18faf48aa7df1858f The publishing script for this crate lives at: https://github.com/alexcrichton/rustc-auto-publish