rustc-ap-rustc_cratesio_shim 218.0.0

Automatically published version of the package `rustc_cratesio_shim` in the rust-lang/rust repository from commit cf84056149baf649f0c297b02afdde7db2187f46 The publishing script for this crate lives at: https://github.com/alexcrichton/rustc-auto-publish