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-rw-r--r--src/bootstrap/tool.rs4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/bootstrap/tool.rs b/src/bootstrap/tool.rs
index d308cecb275..669308c8dd0 100644
--- a/src/bootstrap/tool.rs
+++ b/src/bootstrap/tool.rs
@@ -338,6 +338,10 @@ impl Step for Rustdoc {
         };
 
         builder.ensure(compile::Rustc { compiler: build_compiler, target });
+        builder.ensure(compile::Rustc {
+            compiler: build_compiler,
+            target: builder.build.build,
+        });
 
         let mut cargo = prepare_tool_cargo(builder,
                                            build_compiler,