rustc-ap-rustc_cratesio_shim 286.0.0

Automatically published version of the package `rustc_cratesio_shim` in the rust-lang/rust repository from commit 6d69fe7a2fa31108ee7d23515cec7dd151d08331 The publishing script for this crate lives at: https://github.com/alexcrichton/rustc-auto-publish