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-rw-r--r--src/liballoc/tests/slice.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/liballoc/tests/slice.rs b/src/liballoc/tests/slice.rs
index 99d9c51efc7..6fd0b33f02a 100644
--- a/src/liballoc/tests/slice.rs
+++ b/src/liballoc/tests/slice.rs
@@ -1282,6 +1282,7 @@ fn test_box_slice_clone() {
 }
 
 #[test]
+#[allow(unused_must_use)] // here, we care about the side effects of `.clone()`
 #[cfg_attr(target_os = "emscripten", ignore)]
 fn test_box_slice_clone_panics() {
     use std::sync::Arc;