rustc-ap-rustc_cratesio_shim 481.0.0

Automatically published version of the package `rustc_cratesio_shim` in the rust-lang/rust repository from commit 4b9d80325a65b0375eea526409a0f3aaf1cbc23c The publishing script for this crate lives at: https://github.com/alexcrichton/rustc-auto-publish