fast-rustc-ap-rustc_index is used at run time in 11 crates. It is a direct run-time dependency in 5 crates.

Depender (with downloads and own rev deps) fast-rustc-ap-rustc_index version
10 fast-rustc-ap-rustc_data_structures ^1.0.0
8 fast-rustc-ap-rustc_span ^1.0.0
4 fast-rustc-ap-rustc_ast ^1.0.0
1 fast-rustc-ap-rustc_target ^1.0.0
2 fast-rustc-ap-rustc_session ^1.0.0