rustc-ap-rustc_macros 621.0.0

Automatically published version of the package `rustc_macros` in the rust-lang/rust repository from commit 57bfb8096295150c06559da10adc5629e445a4ac The publishing script for this crate lives at: https://github.com/alexcrichton/rustc-auto-publish
rustc-ap-rustc_macros-621.0.0 doesn't have any documentation.