Add rustc_data_structures for trans_utils/lib.rs

diff --git a/src/librustc_trans_utils/lib.rs b/src/librustc_trans_utils/lib.rs
index e8651d373df65809b0c478b80a645d02a0438d60..77afc2899c329517e5958e4568871f85a8fe2995 100644 (file)
--- a/src/librustc_trans_utils/lib.rs
+++ b/src/librustc_trans_utils/lib.rs
@@ -37,6 +37,7 @@
 extern crate rustc_back;
 extern crate syntax;
 extern crate syntax_pos;
+extern crate rustc_data_structures;
 
 use rustc::ty::{TyCtxt, Instance};
 use rustc::hir;