rustc-ap-rustc_cratesio_shim 199.0.0

Automatically published version of the package `rustc_cratesio_shim` in the rust-lang/rust repository from commit 1ecf6929dc3b309cdfcb7239260777dab38242b9 The publishing script for this crate lives at: https://github.com/alexcrichton/rustc-auto-publish