diff --git a/src/beachline.rs b/src/beachline.rs
index 5038e84..c240694 100644
--- a/src/beachline.rs
+++ b/src/beachline.rs
@@ -17,6 +17,7 @@ use super::predicate as VP;
 use super::siteevent as VSE;
 
 use super::{BigFloatType, BigIntType, InputType, OutputType};
+use crate::BvError;
 use std::cell::Cell;
 use std::cmp::Ordering;
 use std::collections::BTreeMap;
@@ -26,7 +27,6 @@ use std::ops::Bound::{Excluded, Included, Unbounded};
 use std::ops::Neg;
 use std::rc::Rc;
 use vec_map::VecMap;
-use crate::BvError;
 
 /// debug utility function
 pub(crate) fn debug_print_bli_id(value: Option<BeachLineIndex>) -> String {
@@ -117,7 +117,7 @@ where
         key
     }
 
-    pub(crate) fn erase(&mut self, beachline_index: BeachLineIndex) -> Result<(),BvError>{
+    pub(crate) fn erase(&mut self, beachline_index: BeachLineIndex) -> Result<(), BvError> {
         //todo is this correct?
         if let Some(node) = self.beach_line_vec.get(beachline_index.0) {
             let node = node.0;
@@ -125,7 +125,9 @@ where
                 return Err(BvError::SelfIntersecting {txt:"Tried to remove a non-existent beachline, this error can occur if the input data is self-intersecting".to_string()});
             }
             if self.beach_line_.contains_key(&node) {
-                return Err(BvError::SomeError {txt:"Beachline: internal error there are more identical keys".to_string()});
+                return Err(BvError::SomeError {
+                    txt: "Beachline: internal error there are more identical keys".to_string(),
+                });
             }
             let _ = self.beach_line_vec.remove(beachline_index.0);
         } else {
diff --git a/src/builder.rs b/src/builder.rs
index 6c01855..5712f01 100644
--- a/src/builder.rs
+++ b/src/builder.rs
@@ -289,11 +289,11 @@ where
         }
     }
 
-    pub(crate) fn process_site_event (
+    pub(crate) fn process_site_event(
         &mut self,
         site_event_iterator_: &mut VSE::SiteEventIndexType,
         output: &mut VD::VoronoiDiagram<I1, F1, I2, F2>,
-    )  -> Result<(),BvError> {
+    ) -> Result<(), BvError> {
         let (mut right_it, last_index) = {
             // Get next site event to process.
             let site_event = self.site_events_.get(*site_event_iterator_).unwrap();
@@ -455,7 +455,10 @@ where
     /// why we use const_cast there and take all the responsibility that
     /// map data structure keeps correct ordering.
     #[allow(clippy::unnecessary_unwrap)]
-    pub(crate) fn process_circle_event(&mut self, output: &mut VD::VoronoiDiagram<I1, F1, I2, F2>) -> Result<(),BvError> {
+    pub(crate) fn process_circle_event(
+        &mut self,
+        output: &mut VD::VoronoiDiagram<I1, F1, I2, F2>,
+    ) -> Result<(), BvError> {
         // Get the topmost circle event.
         let e = self.circle_events_.top().unwrap();
         let circle_event = e.0.get();
diff --git a/tests/segment_test_4.rs b/tests/segment_test_4.rs
index c0a5fa3..709c1aa 100644
--- a/tests/segment_test_4.rs
+++ b/tests/segment_test_4.rs
@@ -1,6 +1,6 @@
 use boostvoronoi::builder::Builder;
-use boostvoronoi::{BvError, InputType};
 use boostvoronoi::Line;
+use boostvoronoi::{BvError, InputType};
 
 type I1 = i32;
 type F1 = f64;
@@ -21,7 +21,7 @@ fn to_segments<T: InputType>(points: &[[T; 4]]) -> Vec<Line<T>> {
 }
 
 #[test]
-fn segment_4_1_intersecting()  {
+fn segment_4_1_intersecting() {
     let _output = {
         let segments: [[I1; 4]; 9] = [
             [207, 208, 405, 400],
@@ -43,7 +43,6 @@ fn segment_4_1_intersecting()  {
     _output.expect_err("should fail");
 }
 
-
 #[ignore]
 #[test]
 fn segment_4_1() -> Result<(), BvError> {