Fix Rust 1.44 clippy warnings

Author: coolreader18

compiler/src/compile.rs

@@ -591,7 +591,7 @@ impl<O: OutputStream> Compiler<O> {
                         {
                             return Err(self.error_loc(
                                 CompileErrorType::AsyncReturnValue,
-                                statement.location.clone(),
+                                statement.location,
                             ));
                         }
                         self.compile_expression(v)?;

vm/src/obj/objtype.rs

@@ -274,6 +274,7 @@ impl PyClassRef {
             // Search the bases for the proper metatype to deal with this:
             let winner = calculate_meta_class(metatype.clone(), &bases, vm)?;
             let metatype = if !winner.is(&metatype) {
+                #[allow(clippy::redundant_clone)] // false positive
                 if let Some(ref tp_new) = winner.clone().slots.read().unwrap().new {
                     // Pass it to the winner
 

vm/src/pyobject.rs

@@ -599,7 +599,7 @@ impl PyContext {
             bytecode::Constant::Complex { ref value } => self.new_complex(*value),
             bytecode::Constant::String { ref value } => self.new_str(value.clone()),
             bytecode::Constant::Bytes { ref value } => self.new_bytes(value.clone()),
-            bytecode::Constant::Boolean { ref value } => self.new_bool(value.clone()),
+            bytecode::Constant::Boolean { value } => self.new_bool(value),
             bytecode::Constant::Code { ref code } => {
                 self.new_code_object(*code.clone()).into_object()
             }

vm/src/scope.rs

@@ -39,7 +39,6 @@ impl Scope {
     ) -> Scope {
         if !globals.contains_key("__builtins__", vm) {
             globals
-                .clone()
                 .set_item("__builtins__", vm.builtins.clone(), vm)
                 .unwrap();
         }