rustc-ap-rustc_data_structures 677.0.0

Automatically published version of the package `rustc_data_structures` in the rust-lang/rust repository from commit d9cd4a33f53689bc0847775669a14f666a138fd7 The publishing script for this crate lives at: https://github.com/alexcrichton/rustc-auto-publish

Various data structures used by the Rust compiler. The intention is that code in here should be not be *specific* to rustc, so that it can be easily unit tested and so forth. # Note This API is completely unstable and subject to change.