rustc-ap-rustc_cratesio_shim 246.0.0

Automatically published version of the package `rustc_cratesio_shim` in the rust-lang/rust repository from commit 2687112ea6a8701cbf36e6dd4d77d64694cf93d8 The publishing script for this crate lives at: https://github.com/alexcrichton/rustc-auto-publish