fast-rustc-ap-rustc_macros is used at run time in 9 crates (4 directly).

Depender (with downloads and own rev deps) fast-rustc-ap-rustc_macros version
4 fast-rustc-ap-rustc_ast ^1.0.0
1 fast-rustc-ap-rustc_attr ^1.0.0
8 fast-rustc-ap-rustc_span ^1.0.0
1 fast-rustc-ap-rustc_target ^1.0.0