Replace only the first two occurences of timestamp regex

src/macros.rs

@@ -18,7 +18,7 @@ macro_rules! assert_diff_eq {
 
         let diff = str::from_utf8(&$actual).unwrap();
         let re = Regex::new(r"\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}\.\d+ [+-]\d{4}").unwrap();
-        let actual = re.replace_all(diff, "TIMESTAMP");
+        let actual = re.replacen(diff, 2, "TIMESTAMP");
 
         assert_eq!(actual, $expected);
     }};

src/utils.rs

@@ -154,7 +154,10 @@ mod tests {
             let current: String = current.format("%Y-%m-%d %H:%M:%S%.9f %z").to_string();
 
             // verify
-            assert_eq!(current, get_modification_time(&temp.path().to_string_lossy()));
+            assert_eq!(
+                current,
+                get_modification_time(&temp.path().to_string_lossy())
+            );
         }
 
         #[test]