diff --git a/vm/src/exceptions.rs b/vm/src/exceptions.rs
index 63e17e7c6..be3652a73 100644
--- a/vm/src/exceptions.rs
+++ b/vm/src/exceptions.rs
@@ -135,8 +135,12 @@ impl ExceptionZoo {
 
         let overflow_error =
             create_type("OverflowError", &type_type, &arithmetic_error, &dict_type);
-        let zero_division_error =
-            create_type("ZeroDivisionError", &type_type, &arithmetic_error, &dict_type);
+        let zero_division_error = create_type(
+            "ZeroDivisionError",
+            &type_type,
+            &arithmetic_error,
+            &dict_type,
+        );
 
         let module_not_found_error =
             create_type("ModuleNotFoundError", &type_type, &import_error, &dict_type);
diff --git a/vm/src/obj/objint.rs b/vm/src/obj/objint.rs
index e0e275dce..c31709595 100644
--- a/vm/src/obj/objint.rs
+++ b/vm/src/obj/objint.rs
@@ -371,11 +371,13 @@ fn int_truediv(vm: &mut VirtualMachine, args: PyFuncArgs) -> PyResult {
         required = [(i, Some(vm.ctx.int_type())), (i2, None)]
     );
 
-    let v1 = get_value(i).to_f64()
+    let v1 = get_value(i)
+        .to_f64()
         .ok_or_else(|| vm.new_overflow_error("int too large to convert to float".to_string()))?;
 
     let v2 = if objtype::isinstance(i2, &vm.ctx.int_type()) {
-        get_value(i2).to_f64()
+        get_value(i2)
+            .to_f64()
             .ok_or_else(|| vm.new_overflow_error("int too large to convert to float".to_string()))?
     } else if objtype::isinstance(i2, &vm.ctx.float_type()) {
         objfloat::get_value(i2)
@@ -386,9 +388,7 @@ fn int_truediv(vm: &mut VirtualMachine, args: PyFuncArgs) -> PyResult {
     if v2 == 0.0 {
         Err(vm.new_zero_division_error("integer division by zero".to_string()))
     } else {
-        Ok(vm
-            .ctx
-            .new_float(v1 / v2))
+        Ok(vm.ctx.new_float(v1 / v2))
     }
 }
 
diff --git a/vm/src/obj/objrange.rs b/vm/src/obj/objrange.rs
index c79a26492..cd255b29a 100644
--- a/vm/src/obj/objrange.rs
+++ b/vm/src/obj/objrange.rs
@@ -4,7 +4,7 @@ use super::super::pyobject::{
 use super::super::vm::VirtualMachine;
 use super::objint;
 use super::objtype;
-use num_bigint::{BigInt, ToBigInt, Sign};
+use num_bigint::{BigInt, Sign, ToBigInt};
 use num_traits::{One, Signed, ToPrimitive, Zero};
 
 #[derive(Debug, Clone)]
@@ -20,10 +20,14 @@ impl RangeType {
     #[inline]
     pub fn try_len(&self) -> Option<usize> {
         match self.step.sign() {
-            Sign::Plus if self.start < self.end =>
-                ((&self.end - &self.start - 1usize) / &self.step).to_usize().map(|sz| sz + 1),
-            Sign::Minus if self.start > self.end =>
-                ((&self.start - &self.end - 1usize) / (-&self.step)).to_usize().map(|sz| sz + 1),
+            Sign::Plus if self.start < self.end => ((&self.end - &self.start - 1usize)
+                / &self.step)
+                .to_usize()
+                .map(|sz| sz + 1),
+            Sign::Minus if self.start > self.end => ((&self.start - &self.end - 1usize)
+                / (-&self.step))
+                .to_usize()
+                .map(|sz| sz + 1),
             _ => Some(0),
         }
     }
@@ -56,7 +60,7 @@ impl RangeType {
             None
         }
     }
-    
+
     #[inline]
     pub fn repr(&self) -> String {
         if self.step == BigInt::one() {