diff --git a/e2e_tests/tests/pmem_ext2.rs b/e2e_tests/tests/pmem_ext2.rs
index 34b6d00bec..bf3779e98d 100644
--- a/e2e_tests/tests/pmem_ext2.rs
+++ b/e2e_tests/tests/pmem_ext2.rs
@@ -104,8 +104,8 @@ fn pmem_ext2_manyfiles() -> anyhow::Result<()> {
 
     let temp_dir = tempfile::tempdir()?;
     for i in 0..1000 {
-        let f = temp_dir.path().join(&format!("{i}.txt"));
-        std::fs::write(f, &format!("{i}"))?;
+        let f = temp_dir.path().join(format!("{i}.txt"));
+        std::fs::write(f, format!("{i}"))?;
     }
 
     let config = Config::new().extra_args(vec![
diff --git a/ext2/tests/tests.rs b/ext2/tests/tests.rs
index 249010d48b..cb1838de5f 100644
--- a/ext2/tests/tests.rs
+++ b/ext2/tests/tests.rs
@@ -594,7 +594,7 @@ fn test_multiple_block_directory_entry() {
     std::fs::create_dir(&dir).unwrap();
 
     for i in 0..1000 {
-        let path = dir.join(&format!("{i}.txt"));
+        let path = dir.join(format!("{i}.txt"));
         File::create(&path).unwrap();
     }
 
@@ -705,7 +705,7 @@ fn test_multiple_bg_big_files() {
     // Prepare a large data.
     let data = vec!["0123456789"; 5000 * 20].concat();
     for i in 0..10 {
-        let path = dir.join(&format!("{i}.txt"));
+        let path = dir.join(format!("{i}.txt"));
         let mut f = File::create(&path).unwrap();
         f.write_all(data.as_bytes()).unwrap();
     }