Apply clippy fixes

schemars/src/gen.rs

@@ -263,7 +263,7 @@ impl SchemaGenerator {
     /// The keys of the returned `Map` are the [schema names](JsonSchema::schema_name), and the values are the schemas
     /// themselves.
     pub fn take_definitions(&mut self) -> Map<String, Schema> {
-        std::mem::replace(&mut self.definitions, Map::default())
+        std::mem::take(&mut self.definitions)
     }
 
     /// Returns an iterator over the [visitors](SchemaSettings::visitors) being used by this `SchemaGenerator`.

schemars/src/ser.rs

@@ -128,7 +128,7 @@ impl<'a> serde::Serializer for Serializer<'a> {
         self.serialize_none()
     }
 
-    fn serialize_some<T: ?Sized>(mut self, value: &T) -> Result<Self::Ok, Self::Error>
+    fn serialize_some<T: ?Sized>(self, value: &T) -> Result<Self::Ok, Self::Error>
     where
         T: serde::Serialize,
     {
@@ -153,7 +153,7 @@ impl<'a> serde::Serializer for Serializer<'a> {
         if self.gen.settings().option_add_null_type {
             schema = match schema {
                 Schema::Bool(true) => Schema::Bool(true),
-                Schema::Bool(false) => <()>::json_schema(&mut self.gen),
+                Schema::Bool(false) => <()>::json_schema(self.gen),
                 Schema::Object(SchemaObject {
                     instance_type: Some(ref mut instance_type),
                     ..
@@ -163,7 +163,7 @@ impl<'a> serde::Serializer for Serializer<'a> {
                 }
                 schema => SchemaObject {
                     subschemas: Some(Box::new(SubschemaValidation {
-                        any_of: Some(vec![schema, <()>::json_schema(&mut self.gen)]),
+                        any_of: Some(vec![schema, <()>::json_schema(self.gen)]),
                         ..Default::default()
                     })),
                     ..Default::default()

schemars/tests/examples.rs

@@ -17,7 +17,7 @@ fn eight() -> i32 {
     8
 }
 
-fn null() -> () {}
+fn null() {}
 
 #[test]
 fn examples() -> TestResult {

schemars/tests/validate.rs

@@ -4,7 +4,7 @@ use std::collections::HashMap;
 use util::*;
 
 // In real code, this would typically be a Regex, potentially created in a `lazy_static!`.
-static STARTS_WITH_HELLO: &'static str = r"^[Hh]ello\b";
+static STARTS_WITH_HELLO: &str = r"^[Hh]ello\b";
 
 const MIN: u32 = 1;
 const MAX: u32 = 1000;