diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 5b2877083..7d440fcd9 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -118,6 +118,8 @@ jobs:
           path: compiler/parser/python.rs
           key: lalrpop-${{ hashFiles('compiler/parser/python.lalrpop') }}
       - uses: dtolnay/rust-toolchain@stable
+        with:
+          components: clippy
       - name: Set up the Windows environment
         shell: bash
         run: |
@@ -128,6 +130,10 @@ jobs:
         run: brew install autoconf automake libtool
         if: runner.os == 'macOS'
       - uses: Swatinem/rust-cache@v1
+
+      - name: run clippy
+        run: cargo clippy ${{ env.CARGO_ARGS }} ${{ env.NON_WASM_PACKAGES }} -- -Dwarnings
+
       - name: run rust tests
         run: cargo test --workspace --exclude rustpython_wasm --verbose --features threading ${{ env.CARGO_ARGS }} ${{ env.NON_WASM_PACKAGES }}
       - name: check compilation without threading
@@ -331,8 +337,6 @@ jobs:
             components: rustfmt, clippy
       - name: run rustfmt
         run: cargo fmt --all -- --check
-      - name: run clippy
-        run: cargo clippy ${{ env.CARGO_ARGS }} ${{ env.NON_WASM_PACKAGES }} -- -Dwarnings
       - name: run clippy on wasm
         run: cargo clippy --manifest-path=wasm/lib/Cargo.toml -- -Dwarnings
       - uses: actions/setup-python@v2
diff --git a/stdlib/src/fcntl.rs b/stdlib/src/fcntl.rs
index 795b57031..ee73e5039 100644
--- a/stdlib/src/fcntl.rs
+++ b/stdlib/src/fcntl.rs
@@ -163,22 +163,24 @@ mod fcntl {
         whence: OptionalArg<i32>,
         vm: &VirtualMachine,
     ) -> PyResult {
+        macro_rules! try_into_l_type {
+            ($l_type:path) => {
+                $l_type
+                    .try_into()
+                    .map_err(|e| vm.new_overflow_error(format!("{e}")))
+            };
+        }
+
         let mut l: libc::flock = unsafe { std::mem::zeroed() };
-        if cmd == libc::LOCK_UN {
-            l.l_type = libc::F_UNLCK
-                .try_into()
-                .map_err(|e| vm.new_overflow_error(format!("{e}")))?;
+        l.l_type = if cmd == libc::LOCK_UN {
+            try_into_l_type!(libc::F_UNLCK)
         } else if (cmd & libc::LOCK_SH) != 0 {
-            l.l_type = libc::F_RDLCK
-                .try_into()
-                .map_err(|e| vm.new_overflow_error(format!("{e}")))?;
+            try_into_l_type!(libc::F_RDLCK)
         } else if (cmd & libc::LOCK_EX) != 0 {
-            l.l_type = libc::F_WRLCK
-                .try_into()
-                .map_err(|e| vm.new_overflow_error(format!("{e}")))?;
+            try_into_l_type!(libc::F_WRLCK)
         } else {
             return Err(vm.new_value_error("unrecognized lockf argument".to_owned()));
-        }
+        }?;
         l.l_start = match start {
             OptionalArg::Present(s) => s.try_to_primitive(vm)?,
             OptionalArg::Missing => 0,
diff --git a/stdlib/src/ssl.rs b/stdlib/src/ssl.rs
index 73c3296d2..19316e4e2 100644
--- a/stdlib/src/ssl.rs
+++ b/stdlib/src/ssl.rs
@@ -1445,7 +1445,7 @@ mod windows {
             .iter()
             .filter_map(|open| open(store_name.as_str()).ok())
             .collect::<Vec<_>>();
-        let certs = stores.iter().map(|s| s.certs()).flatten().map(|c| {
+        let certs = stores.iter().flat_map(|s| s.certs()).map(|c| {
             let cert = vm.ctx.new_bytes(c.to_der().to_owned());
             let enc_type = unsafe {
                 let ptr = c.as_ptr() as wincrypt::PCCERT_CONTEXT;
diff --git a/vm/src/stdlib/winapi.rs b/vm/src/stdlib/winapi.rs
index e9eceb0f2..68d6f5125 100644
--- a/vm/src/stdlib/winapi.rs
+++ b/vm/src/stdlib/winapi.rs
@@ -431,6 +431,6 @@ mod _winapi {
         }
 
         let (path, _) = path.split_at(length as usize);
-        Ok(String::from_utf16(&path).unwrap())
+        Ok(String::from_utf16(path).unwrap())
     }
 }
diff --git a/vm/src/stdlib/winreg.rs b/vm/src/stdlib/winreg.rs
index 71bdec42a..48b347c5f 100644
--- a/vm/src/stdlib/winreg.rs
+++ b/vm/src/stdlib/winreg.rs
@@ -191,7 +191,7 @@ mod winreg {
         key.with_key(|k| k.get_raw_value(subkey))
             .map_err(|e| e.to_pyexception(vm))
             .and_then(|regval| {
-                let ty = regval.vtype.clone() as usize;
+                let ty = regval.vtype as usize;
                 Ok((reg_to_py(regval, vm)?, ty))
             })
     }
@@ -221,7 +221,7 @@ mod winreg {
             })
             .map_err(|e| e.to_pyexception(vm))
             .and_then(|(name, value)| {
-                let ty = value.vtype.clone() as usize;
+                let ty = value.vtype as usize;
                 Ok((name, reg_to_py(value, vm)?, ty))
             })
     }