Merge changes I26198187,Ia904d07b

* changes:
  rust: Support MTE memtag_heap sanitizer
  rust: Support global sanitizers

rust/rust_test.go

@@ -442,3 +442,10 @@ func TestLibrarySizes(t *testing.T) {
 	m.Output("unstripped/libwaldo.dylib.so.bloaty.csv")
 	m.Output("libwaldo.dylib.so.bloaty.csv")
 }
+
+func assertString(t *testing.T, got, expected string) {
+	t.Helper()
+	if got != expected {
+		t.Errorf("expected %q got %q", expected, got)
+	}
+}