Compile rustc before building tests for rustdoc

diff --git a/src/bootstrap/test.rs b/src/bootstrap/test.rs
index 6254f98165665630550f7c68dbf88be360cb6dab..dc41e75be26af9e307a026eb0cfaa889bd0cfd00 100644 (file)
--- a/src/bootstrap/test.rs
+++ b/src/bootstrap/test.rs
@@ -1730,6 +1730,7 @@ fn run(self, builder: &Builder) {
 
         let compiler = builder.compiler(builder.top_stage, self.host);
         let target = compiler.host;
+        builder.ensure(compile::Rustc { compiler, target });
 
         let mut cargo = tool::prepare_tool_cargo(builder,
                                                  compiler,