diff --git a/rustfmt-core/tests/lib.rs b/rustfmt-core/tests/lib.rs
index f219cf3212b..b15dc417106 100644
--- a/rustfmt-core/tests/lib.rs
+++ b/rustfmt-core/tests/lib.rs
@@ -623,8 +623,10 @@ impl ConfigurationSection {
         file: &mut Enumerate<I>,
     ) -> Option<ConfigurationSection> {
         lazy_static! {
-            static ref CONFIG_NAME_REGEX: regex::Regex = regex::Regex::new(r"^## `([^`]+)`").expect("Failed creating configuration pattern");
-            static ref CONFIG_VALUE_REGEX: regex::Regex = regex::Regex::new(r#"^#### `"?([^`"]+)"?`"#).expect("Failed creating configuration value pattern");
+            static ref CONFIG_NAME_REGEX: regex::Regex =
+                regex::Regex::new(r"^## `([^`]+)`").expect("Failed creating configuration pattern");
+            static ref CONFIG_VALUE_REGEX: regex::Regex = regex::Regex::new(r#"^#### `"?([^`"]+)"?`"#)
+                .expect("Failed creating configuration value pattern");
         }
 
         loop {