Fix clippy failure on Rust 1.42.0

parser/src/lib.rs

@@ -32,6 +32,7 @@ pub mod mode;
 pub mod parser;
 lalrpop_mod!(
     #[allow(clippy::all)]
+    #[allow(unused)]
     python
 );
 pub mod token;

vm/src/function.rs

@@ -67,7 +67,7 @@ impl From<(&Args, &KwArgs)> for PyFuncArgs {
 
 impl FromArgs for PyFuncArgs {
     fn from_args(_vm: &VirtualMachine, args: &mut PyFuncArgs) -> Result<Self, ArgumentError> {
-        Ok(mem::replace(args, Default::default()))
+        Ok(mem::take(args))
     }
 }
 

vm/src/stdlib/itertools.rs

@@ -906,8 +906,8 @@ impl PyItertoolsProduct {
     }
 
     fn is_end(&self) -> bool {
-        (self.idxs.borrow()[self.cur.get()] == &self.pools[self.cur.get()].len() - 1
-            && self.cur.get() == 0)
+        let cur = self.cur.get();
+        self.idxs.borrow()[cur] == self.pools[cur].len() - 1 && cur == 0
     }
 
     fn update_idxs(&self) {