//! Used by `rustc` when loading a plugin.
use crate::Registry;
-use rustc::middle::cstore::MetadataLoader;
-use rustc::session::Session;
use rustc_ast::ast::{Crate, Ident};
use rustc_errors::struct_span_err;
use rustc_metadata::locator;
+use rustc_middle::middle::cstore::MetadataLoader;
+use rustc_session::Session;
use rustc_span::symbol::sym;
use rustc_span::Span;