diff --git a/src/assertions/iterator.rs b/src/assertions/iterator.rs
index fb3e440..fde400c 100644
--- a/src/assertions/iterator.rs
+++ b/src/assertions/iterator.rs
@@ -639,12 +639,6 @@ mod tests {
 
     use super::*;
 
-    #[derive(Debug, PartialEq)]
-    struct LongDebugObject {
-        nested: Vec<i32>,
-        plain: String,
-    }
-
     #[test]
     fn contains() {
         assert_that!(vec![1, 2, 3].iter()).contains(&3);
diff --git a/src/base.rs b/src/base.rs
index fa190d6..f86442e 100644
--- a/src/base.rs
+++ b/src/base.rs
@@ -525,8 +525,8 @@ impl Fact {
 
 #[cfg(test)]
 mod tests {
-    use crate::testing::CheckThatResult;
     use crate::*;
+    use crate::testing::CheckThatResult;
 
     use super::*;
 
@@ -661,7 +661,9 @@ kv_key: [ "1", "2", "3" ]"#
         );
         #[derive(Debug)]
         struct LongOutputData<'a> {
+            #[allow(dead_code)]
             val: Option<i32>,
+            #[allow(dead_code)]
             nested: Vec<&'a str>,
         }
         assert_eq!(