chore: fix clippy issues + run clippy in CI (#45)

* Chore: fix clippy issues + run clippy in CI

* clippy

* clippy

* clippy

* Formatting

utils/src/id.rs

@@ -103,16 +103,16 @@ impl NestedId {
     }
 }
 
-impl ToString for NestedId {
-    fn to_string(&self) -> String {
+impl std::fmt::Display for NestedId {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self {
             NestedId::String { id, root } => match root {
-                Some(root) => format!("{}/{}", root.to_string(), id),
-                None => id.to_string(),
+                Some(root) => write!(f, "{}/{}", root, id),
+                None => write!(f, "{}", id),
             },
             NestedId::Counter { value, root } => match root {
-                Some(root) => format!("{}/{}", root.to_string(), value),
-                None => value.to_string(),
+                Some(root) => write!(f, "{}/{}", root, value),
+                None => write!(f, "{}", value),
             },
         }
     }

utils/src/range/difference.rs

@@ -17,9 +17,7 @@ pub trait DifferenceMut<Rhs> {
 
 impl<T: Copy + Ord> DifferenceMut<Range<T>> for RangeSet<T> {
     fn difference_mut(&mut self, other: &Range<T>) {
-        if other.is_empty() {
-            return;
-        } else if self.ranges.is_empty() {
+        if other.is_empty() || self.ranges.is_empty() {
             return;
         }
 

utils/src/range/intersection.rs

@@ -165,6 +165,7 @@ impl<T: Copy + Ord> BitAnd<&RangeSet<T>> for RangeSet<T> {
 }
 
 #[cfg(test)]
+#[allow(clippy::single_range_in_vec_init)]
 mod tests {
     use std::collections::HashSet;
 

utils/src/range/subset.rs

@@ -82,6 +82,7 @@ impl<T: Copy + Ord> Subset<RangeSet<T>> for RangeSet<T> {
 }
 
 #[cfg(test)]
+#[allow(clippy::single_range_in_vec_init)]
 mod tests {
     use super::*;