rustc-ap-rustc_cratesio_shim 276.0.0

Automatically published version of the package `rustc_cratesio_shim` in the rust-lang/rust repository from commit f99911a4a0bead7dd1f9ef2f90442844434cc391 The publishing script for this crate lives at: https://github.com/alexcrichton/rustc-auto-publish