add test for build.rs

Author: lucarlig

lints/par_fold/Cargo.toml

@@ -35,3 +35,7 @@ path = "ui/rayon_missing.rs"
 [[example]]
 name = "par_fold_simple"
 path = "ui/par_fold_simple.rs"
+
+[[example]]
+name = "build"
+path = "ui/build.rs"

lints/par_fold/ui/build.rs

@@ -0,0 +1,3 @@
+fn main() {
+    (0..100).for_each(|x| println!("{x}"));
+}