rustc-ap-rustc_cratesio_shim 394.0.0

Automatically published version of the package `rustc_cratesio_shim` in the rust-lang/rust repository from commit 20cfc9deb5a85c4daf235871e47c0a81daa9b700 The publishing script for this crate lives at: https://github.com/alexcrichton/rustc-auto-publish