diff --git a/src/backend/drm/mod.rs b/src/backend/drm/mod.rs
index 9075859..90e3edc 100644
--- a/src/backend/drm/mod.rs
+++ b/src/backend/drm/mod.rs
@@ -366,17 +366,33 @@ impl<H: DrmHandler + 'static> DrmDevice<H> {
         // check if the given connectors and crtc match
         let connectors = connectors.into();
         // get all encoders supported by this device
-        let mut set = self.context.head().head().resource_handles()?.encoders().iter().cloned().collect::<HashSet<encoder::Handle>>();
+        let mut set = self.context
+            .head()
+            .head()
+            .resource_handles()?
+            .encoders()
+            .iter()
+            .cloned()
+            .collect::<HashSet<encoder::Handle>>();
         for connector in connectors.iter() {
             let info = connector::Info::load_from_device(self.context.head().head(), *connector)?;
             // then check for every connector which encoders it does support
-            let conn_set = info.encoders().iter().cloned().collect::<HashSet<encoder::Handle>>();
+            let conn_set = info.encoders()
+                .iter()
+                .cloned()
+                .collect::<HashSet<encoder::Handle>>();
             // and update the list of supported encoders for this combination
-            set = set.intersection(&conn_set).cloned().collect::<HashSet<encoder::Handle>>();
+            set = set.intersection(&conn_set)
+                .cloned()
+                .collect::<HashSet<encoder::Handle>>();
         }
 
         // check if there is any encoder left that can be connected to the crtc
-        let encoders: Vec<encoder::Info> = set.iter().map(|handle| encoder::Info::load_from_device(self.context.head().head(), *handle).map_err(DrmError::from)).collect::<Result<Vec<encoder::Info>, DrmError>>()?;
+        let encoders: Vec<encoder::Info> = set.iter()
+            .map(|handle| {
+                encoder::Info::load_from_device(self.context.head().head(), *handle).map_err(DrmError::from)
+            })
+            .collect::<Result<Vec<encoder::Info>, DrmError>>()?;
         if !encoders.iter().any(|enc| enc.supports_crtc(crtc)) {
             return Err(DrmError::Crtc(CrtcError::NoSuitableEncoder));
         }