Migrate run-make/allow-non-lint-warnings-cmdline to rmake.rs

src/tools/tidy/src/allowed_run_make_makefiles.txt

@@ -1,5 +1,4 @@
 run-make/allocator-shim-circular-deps/Makefile
-run-make/allow-non-lint-warnings-cmdline/Makefile
 run-make/archive-duplicate-names/Makefile
 run-make/atomic-lock-free/Makefile
 run-make/branch-protection-check-IBT/Makefile

tests/run-make/allow-non-lint-warnings-cmdline/Makefile

@@ -1,12 +0,0 @@
-# ignore-cross-compile
-include ../tools.mk
-
-# Test that -A warnings makes the 'empty trait list for derive' warning go away
-OUT=$(shell $(RUSTC) foo.rs -A warnings 2>&1 | grep "warning" )
-
-all: foo
-	test -z '$(OUT)'
-
-# This is just to make sure the above command actually succeeds
-foo:
-	$(RUSTC) foo.rs -A warnings

tests/run-make/allow-non-lint-warnings-cmdline/rmake.rs

@@ -0,0 +1,8 @@
+// Test that -A warnings makes the 'empty trait list for derive' warning go away.
+
+use run_make_support::rustc;
+
+fn main() {
+    let output = rustc().input("foo.rs").arg("-Awarnings").run();
+    output.assert_stderr_not_contains("warning");
+}