Clippy pass with --no-default-features

src/deserialize/mod.rs

@@ -1,5 +1,7 @@
 use crate::edn::{Edn, Error};
-use std::collections::{BTreeMap, BTreeSet, HashMap, HashSet};
+use std::collections::{BTreeMap, HashMap};
+#[cfg(feature = "sets")]
+use std::collections::{BTreeSet, HashSet};
 use std::convert::TryFrom;
 use std::str::FromStr;
 

src/deserialize/parse.rs

@@ -1,7 +1,9 @@
 #[cfg(feature = "sets")]
 use crate::edn::Set;
 use crate::edn::{Edn, Error, List, Map, Vector};
-use std::collections::{BTreeMap, BTreeSet};
+use std::collections::BTreeMap;
+#[cfg(feature = "sets")]
+use std::collections::BTreeSet;
 
 const DELIMITERS: [char; 8] = [',', ']', '}', ')', ';', '(', '[', '{'];
 
@@ -442,10 +444,10 @@ fn read_set(chars: &mut std::iter::Enumerate<std::str::Chars>) -> Result<Edn, Er
 }
 
 #[cfg(not(feature = "sets"))]
-fn read_set(chars: &mut std::iter::Enumerate<std::str::Chars>) -> Result<Edn, Error> {
-    Err(Error::ParseEdn(format!(
-        "Could not parse set due to feature not being enabled"
-    )))
+fn read_set(_chars: &mut std::iter::Enumerate<std::str::Chars>) -> Result<Edn, Error> {
+    Err(Error::ParseEdn(
+        "Could not parse set due to feature not being enabled".to_string(),
+    ))
 }
 
 fn read_namespaced_map(chars: &mut std::iter::Enumerate<std::str::Chars>) -> Result<Edn, Error> {

src/edn/mod.rs

@@ -1,6 +1,9 @@
 use crate::deserialize::parse::{self};
+#[cfg(feature = "sets")]
 use std::cmp::{Ord, PartialOrd};
-use std::collections::{BTreeMap, BTreeSet};
+use std::collections::BTreeMap;
+#[cfg(feature = "sets")]
+use std::collections::BTreeSet;
 use std::convert::TryFrom;
 use utils::index::Index;
 
@@ -82,7 +85,7 @@ impl Double {
 
 #[cfg(not(feature = "sets"))]
 impl Double {
-    fn to_float(&self) -> f64 {
+    const fn to_float(&self) -> f64 {
         self.0
     }
 }