-use errors::struct_span_err;
use rustc::ty::TyCtxt;
+use rustc_errors::struct_span_err;
use rustc_hir as hir;
use rustc_hir::itemlikevisit::ItemLikeVisitor;
use rustc_span::symbol::sym;
-use rustc_error_codes::*;
-
pub fn test_variance(tcx: TyCtxt<'_>) {
tcx.hir().krate().visit_all_item_likes(&mut VarianceTest { tcx });
}