Migrate run-make/compile-stdin to rmake.rs

src/tools/tidy/src/allowed_run_make_makefiles.txt

@@ -18,7 +18,6 @@ run-make/cdylib-fewer-symbols/Makefile
 run-make/cdylib/Makefile
 run-make/codegen-options-parsing/Makefile
 run-make/comment-section/Makefile
-run-make/compile-stdin/Makefile
 run-make/compiler-lookup-paths-2/Makefile
 run-make/compiler-lookup-paths/Makefile
 run-make/compiler-rt-works-on-mingw/Makefile

tests/run-make/compile-stdin/Makefile

@@ -1,9 +0,0 @@
-# When provided standard input piped directly into rustc, this test checks that the compilation completes successfully and that the output can be executed.
-# See https://github.com/rust-lang/rust/pull/28805
-
-# ignore-cross-compile
-include ../tools.mk
-
-all:
-	echo 'fn main(){}' | $(RUSTC) -
-	$(call RUN,rust_out)

tests/run-make/compile-stdin/rmake.rs

@@ -0,0 +1,13 @@
+// When provided standard input piped directly into rustc, this test checks that the compilation
+// completes successfully and that the output can be executed.
+//
+// See <https://github.com/rust-lang/rust/pull/28805>.
+
+//@ ignore-cross-compile
+
+use run_make_support::{run, rustc};
+
+fn main() {
+    rustc().arg("-").stdin("fn main() {}").run();
+    run("rust_out");
+}