message: Export `RustDocFingerprint` from `core/compiler`
diff: @@ -32,7 +32,9 @@ use lazycell::LazyCell;
  use log::debug;
  pub use self::build_config::{BuildConfig, CompileMode, MessageFormat};
  -pub use self::build_context::{BuildContext, FileFlavor, FileType, TargetInfo};
  +pub use self::build_context::{
  + BuildContext, FileFlavor, FileType, RustDocFingerprint, RustcTargetData, TargetInfo,
  +};
  use self::build_plan::BuildPlan;
  pub use self::compilation::{Compilation, Doctest};
  pub use self::compile_kind::{CompileKind, CompileTarget};
  