rustc-ap-rustc_cratesio_shim 191.0.0

Automatically published version of the package `rustc_cratesio_shim` in the rust-lang/rust repository from commit 960f6046c6d367a48f405dd5c76cc303497edfc5 The publishing script for this crate lives at: https://github.com/alexcrichton/rustc-auto-publish