fixed Err warnings for build.rs

build.rs

@@ -43,8 +43,8 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
 	]).spawn()?;
 
 
-	handler_ld_true.wait();
+	handler_ld_true.wait().unwrap();
-	handler_ld_false.wait();
+	handler_ld_false.wait().unwrap();
 
 	Ok(())
 }