add regression test

diff --git a/tests/compile-fail/useless_attribute.rs b/tests/compile-fail/useless_attribute.rs
index 645d7c154f1a954b00aad2ad77a03361c2699900..1826f3a20e9b1366a1385c3db27d1d36faa02cee 100644 (file)
--- a/tests/compile-fail/useless_attribute.rs
+++ b/tests/compile-fail/useless_attribute.rs
@@ -7,4 +7,8 @@
 //~| SUGGESTION #![allow(dead_code)]
 extern crate clippy_lints;
 
+// don't lint on unused_import for `use` items
+#[allow(unused_imports)]
+use std::collections;
+
 fn main() {}