rust-lang
diff --git a/‎src/tools/tidy/src/allowed_run_make_makefiles.txt
-1 b/‎src/tools/tidy/src/allowed_run_make_makefiles.txt
-1
diff --git a/‎tests/run-make/hir-tree/Makefile
-8 b/‎tests/run-make/hir-tree/Makefile
-8
diff --git a/‎tests/run-make/hir-tree/input.rs
-3 b/‎tests/run-make/hir-tree/input.rs
-3
diff --git a/‎tests/ui/unpretty/hir-tree.rs
+8 b/‎tests/ui/unpretty/hir-tree.rs
+8
diff --git a/‎tests/ui/unpretty/hir-tree.stderr
+4 b/‎tests/ui/unpretty/hir-tree.stderr
+4
@@ -86,7 +86,6 @@ run-make/foreign-exceptions/Makefile
 run-make/foreign-rust-exceptions/Makefile
 run-make/fpic/Makefile
 run-make/glibc-staticlib-args/Makefile
-run-make/hir-tree/Makefile
 run-make/inaccessible-temp-dir/Makefile
 run-make/include_bytes_deps/Makefile
 run-make/incr-add-rust-src-component/Makefile
 
@@ -0,0 +1,8 @@
+//@ build-pass
+//@ compile-flags: -o - -Zunpretty=hir-tree
+//@ check-stdout
+//@ regex-error-pattern: Hello, Rustaceans!
+
+fn main() {
+    println!("Hello, Rustaceans!");
+}
@@ -0,0 +1,4 @@
+warning: ignoring --out-dir flag due to -o flag
+
+warning: 1 warning emitted
+