diff --git a/scrapers/atcoder.py b/scrapers/atcoder.py
index 66b95aa..1b946dd 100644
--- a/scrapers/atcoder.py
+++ b/scrapers/atcoder.py
@@ -266,43 +266,31 @@ class AtcoderScraper(BaseScraper):
         return "atcoder"
 
     async def scrape_contest_metadata(self, contest_id: str) -> MetadataResult:
-        async def impl(cid: str) -> MetadataResult:
-            try:
-                rows = await asyncio.to_thread(_scrape_tasks_sync, cid)
-            except requests.HTTPError as e:
-                if e.response is not None and e.response.status_code == 404:
-                    return self._create_metadata_error(
-                        f"No problems found for contest {cid}", cid
-                    )
-                raise
-
+        try:
+            rows = await asyncio.to_thread(_scrape_tasks_sync, contest_id)
             problems = _to_problem_summaries(rows)
             if not problems:
-                return self._create_metadata_error(
-                    f"No problems found for contest {cid}", cid
+                return self._metadata_error(
+                    f"No problems found for contest {contest_id}"
                 )
-
             return MetadataResult(
                 success=True,
                 error="",
-                contest_id=cid,
+                contest_id=contest_id,
                 problems=problems,
                 url=f"https://atcoder.jp/contests/{contest_id}/tasks/{contest_id}_%s",
             )
-
-        return await self._safe_execute("metadata", impl, contest_id)
+        except Exception as e:
+            return self._metadata_error(str(e))
 
     async def scrape_contest_list(self) -> ContestListResult:
-        async def impl() -> ContestListResult:
-            try:
-                contests = await _fetch_all_contests_async()
-            except Exception as e:
-                return self._create_contests_error(str(e))
+        try:
+            contests = await _fetch_all_contests_async()
             if not contests:
-                return self._create_contests_error("No contests found")
+                return self._contests_error("No contests found")
             return ContestListResult(success=True, error="", contests=contests)
-
-        return await self._safe_execute("contests", impl)
+        except Exception as e:
+            return self._contests_error(str(e))
 
     async def stream_tests_for_category_async(self, category_id: str) -> None:
         rows = await asyncio.to_thread(_scrape_tasks_sync, category_id)
diff --git a/scrapers/codeforces.py b/scrapers/codeforces.py
index 840616f..cf172b8 100644
--- a/scrapers/codeforces.py
+++ b/scrapers/codeforces.py
@@ -86,14 +86,14 @@ def _extract_samples(block: Tag) -> tuple[list[TestCase], bool]:
     if not st:
         return [], False
 
-    input_pres: list[Tag] = [  # type: ignore[misc]
-        inp.find("pre")  # type: ignore[misc]
-        for inp in st.find_all("div", class_="input")  # type: ignore[union-attr]
+    input_pres: list[Tag] = [
+        inp.find("pre")
+        for inp in st.find_all("div", class_="input")
         if isinstance(inp, Tag) and inp.find("pre")
     ]
     output_pres: list[Tag] = [
-        out.find("pre")  # type: ignore[misc]
-        for out in st.find_all("div", class_="output")  # type: ignore[union-attr]
+        out.find("pre")
+        for out in st.find_all("div", class_="output")
         if isinstance(out, Tag) and out.find("pre")
     ]
     input_pres = [p for p in input_pres if isinstance(p, Tag)]
diff --git a/tests/conftest.py b/tests/conftest.py
index bd84941..aaefec8 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -245,16 +245,16 @@ def run_scraper_offline(fixture_text):
         offline_fetches = _make_offline_fetches(scraper_name)
 
         if scraper_name == "codeforces":
-            fetchers.Fetcher.get = offline_fetches["Fetcher.get"]  # type: ignore[assignment]
+            fetchers.Fetcher.get = offline_fetches["Fetcher.get"]
             requests.get = offline_fetches["requests.get"]
         elif scraper_name == "atcoder":
             ns._fetch = offline_fetches["_fetch"]
             ns._get_async = offline_fetches["_get_async"]
         elif scraper_name == "cses":
-            httpx.AsyncClient.get = offline_fetches["__offline_fetch_text"]  # type: ignore[assignment]
+            httpx.AsyncClient.get = offline_fetches["__offline_fetch_text"]
         elif scraper_name == "codechef":
-            httpx.AsyncClient.get = offline_fetches["__offline_get_async"]  # type: ignore[assignment]
-            fetchers.Fetcher.get = offline_fetches["Fetcher.get"]  # type: ignore[assignment]
+            httpx.AsyncClient.get = offline_fetches["__offline_get_async"]
+            fetchers.Fetcher.get = offline_fetches["Fetcher.get"]
 
         scraper_class = getattr(ns, scraper_classes[scraper_name])
         scraper = scraper_class()