build: enforce clippy

Co-authored-by: warren2k <[email protected]>

.github/workflows/ci.yml

@@ -35,7 +35,7 @@ jobs:
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
-      - run: cargo check ${{ matrix.features }}
+      - run: cargo clippy ${{ matrix.features }}
 
   test:
     name: test

wrappers.rs

@@ -0,0 +1,38 @@
+//! This module helps suppress two kinds of warnings: `deprecated` and `unstable_name_collisions`.
+//! New items are created that are noop-wrappers of the original items.
+//! The items' original paths are preserved.
+
+use itertools::Itertools;
+
+pub mod free {
+    // it seems the compiler is not able to discern that this is used
+    #[allow(dead_code)]
+    pub fn zip<I, J>(i: I, j: J) -> core::iter::Zip<I::IntoIter, J::IntoIter>
+        where I: IntoIterator,
+              J: IntoIterator
+    {
+        #[allow(deprecated)]
+        itertools::free::zip(i, j)
+    }
+}
+
+pub trait Ext: Itertools {
+    fn intersperse_wrap(self, element: Self::Item) -> itertools::Intersperse<Self>
+    where
+        Self: Sized,
+        Self::Item: Clone,
+    {
+        <Self as Itertools>::intersperse(self, element)
+    }
+
+    fn fold1_wrap<F>(self, f: F) -> Option<Self::Item>
+        where F: FnMut(Self::Item, Self::Item) -> Self::Item,
+              Self: Sized,
+    {
+        #[allow(deprecated)]
+        <Self as Itertools>::fold1(self, f)
+    }
+}
+
+impl<T: Itertools> Ext for T {}
+