diff --git a/src/canvas.rs b/src/canvas.rs
index c66075e..cf9ea11 100644
--- a/src/canvas.rs
+++ b/src/canvas.rs
@@ -1124,7 +1124,6 @@ mod all_functional_patterns_tests {
         assert!(is_functional(version, version.width(), 0, 9));
         assert!(!is_functional(version, version.width(), 1, 9));
     }
-
 }
 
 //}}}
@@ -1978,11 +1977,13 @@ impl Canvas {
         match self.version {
             Version::Normal(_) => ALL_PATTERNS_QR.iter(),
             Version::Micro(_) => ALL_PATTERNS_MICRO_QR.iter(),
-        }.map(|ptn| {
+        }
+        .map(|ptn| {
             let mut c = self.clone();
             c.apply_mask(*ptn);
             c
-        }).min_by_key(Self::compute_total_penalty_scores)
+        })
+        .min_by_key(Self::compute_total_penalty_scores)
         .expect("at least one pattern")
     }
 
diff --git a/src/optimize.rs b/src/optimize.rs
index bceca6a..bf154dc 100644
--- a/src/optimize.rs
+++ b/src/optimize.rs
@@ -332,9 +332,7 @@ impl<I: Iterator<Item = Segment>> Iterator for Optimizer<I> {
 
 /// Computes the total encoded length of all segments.
 pub fn total_encoded_len(segments: &[Segment], version: Version) -> usize {
-    segments.iter()
-        .map(|seg| seg.encoded_len(version))
-        .sum()
+    segments.iter().map(|seg| seg.encoded_len(version)).sum()
 }
 
 #[cfg(test)]
@@ -453,7 +451,6 @@ mod optimize_tests {
             Version::Micro(3),
         );
     }
-
 }
 
 #[cfg(feature = "bench")]
diff --git a/src/render/image.rs b/src/render/image.rs
index 31d6a41..878e8f7 100644
--- a/src/render/image.rs
+++ b/src/render/image.rs
@@ -20,10 +20,10 @@ macro_rules! impl_pixel_for_image_pixel {
     };
 }
 
-impl_pixel_for_image_pixel!{ Luma<S>: p => [p] }
-impl_pixel_for_image_pixel!{ LumaA<S>: p => [p, S::max_value()] }
-impl_pixel_for_image_pixel!{ Rgb<S>: p => [p, p, p] }
-impl_pixel_for_image_pixel!{ Rgba<S>: p => [p, p, p, S::max_value()] }
+impl_pixel_for_image_pixel! { Luma<S>: p => [p] }
+impl_pixel_for_image_pixel! { LumaA<S>: p => [p, S::max_value()] }
+impl_pixel_for_image_pixel! { Rgb<S>: p => [p, p, p] }
+impl_pixel_for_image_pixel! { Rgba<S>: p => [p, p, p, S::max_value()] }
 
 impl<P: ImagePixel + 'static> Canvas for (P, ImageBuffer<P, Vec<P::Subpixel>>) {
     type Pixel = P;
@@ -66,7 +66,8 @@ mod render_tests {
             ],
             3,
             1,
-        ).module_dimensions(1, 1)
+        )
+        .module_dimensions(1, 1)
         .build();
 
         #[cfg_attr(rustfmt, rustfmt_skip)]