[topo] Addressing clippy warnings surfaced by uniform build args!

Author: anp

topo/macro/src/lib.rs

@@ -57,9 +57,7 @@ pub fn topo(_attrs: TokenStream, input: TokenStream) -> TokenStream {
 
     for attr in tmp {
         match attr.parse_meta() {
-            Ok(syn::Meta::NameValue(syn::MetaNameValue { ref ident, .. }))
-                if ident.to_string() == "doc" =>
-            {
+            Ok(syn::Meta::NameValue(syn::MetaNameValue { ref ident, .. })) if *ident == "doc" => {
                 doc_attrs.push(attr);
             }
             _ => input_fn.attrs.push(attr),
@@ -99,9 +97,9 @@ fn docs_fn_signature(input_fn: &syn::ItemFn) -> TokenStream2 {
     let doc_fn_sig = syn::ItemFn {
         attrs: vec![],
         vis: syn::Visibility::Inherited,
-        constness: input_fn.constness.clone(),
-        asyncness: input_fn.asyncness.clone(),
-        unsafety: input_fn.unsafety.clone(),
+        constness: input_fn.constness,
+        asyncness: input_fn.asyncness,
+        unsafety: input_fn.unsafety,
         abi: input_fn.abi.clone(),
         ident: input_fn.ident.clone(),
         decl: input_fn.decl.clone(),

topo/src/lib.rs

@@ -53,7 +53,7 @@ use {
     std::{
         any::{Any, TypeId},
         cell::RefCell,
-        collections::HashMap,
+        collections::{hash_map::DefaultHasher, HashMap},
         hash::{Hash, Hasher},
         ops::Deref,
         rc::Rc,
@@ -158,7 +158,7 @@ impl Eq for Point {}
 impl Point {
     fn id(&self) -> Id {
         // FIXME probably need a better hash function?
-        let mut hasher = std::collections::hash_map::DefaultHasher::new();
+        let mut hasher = DefaultHasher::new();
         self.path.hash(&mut hasher);
         self.prev_sibling.hash(&mut hasher);
         Id(hasher.finish())
@@ -313,7 +313,7 @@ mod tests {
     fn clone(first: &Point) -> Point {
         Point {
             path: first.path.clone(),
-            prev_sibling: first.prev_sibling.clone(),
+            prev_sibling: first.prev_sibling,
             env: first.env.clone(),
         }
     }