Move exception suppression to cover more of self-version-check logic

This correctly suppresses issues around building networking sessions for
a self version check.

Author: pradyunsg

src/pip/_internal/cli/index_command.py

@@ -156,11 +156,15 @@ def handle_pip_version_check(self, options: Values) -> None:
         if options.disable_pip_version_check or options.no_index:
             return
 
-        # Otherwise, check if we're using the latest version of pip available.
-        session = self._build_session(
-            options,
-            retries=0,
-            timeout=min(5, options.timeout),
-        )
-        with session:
-            _pip_self_version_check(session, options)
+        try:
+            # Otherwise, check if we're using the latest version of pip available.
+            session = self._build_session(
+                options,
+                retries=0,
+                timeout=min(5, options.timeout),
+            )
+            with session:
+                _pip_self_version_check(session, options)
+        except Exception:
+            logger.warning("There was an error checking the latest version of pip.")
+            logger.debug("See below for error", exc_info=True)

src/pip/_internal/self_outdated_check.py

@@ -232,17 +232,13 @@ def pip_self_version_check(session: PipSession, options: optparse.Values) -> Non
     if not installed_dist:
         return
 
-    try:
-        upgrade_prompt = _self_version_check_logic(
-            state=SelfCheckState(cache_dir=options.cache_dir),
-            current_time=datetime.datetime.now(datetime.timezone.utc),
-            local_version=installed_dist.version,
-            get_remote_version=functools.partial(
-                _get_current_remote_pip_version, session, options
-            ),
-        )
-        if upgrade_prompt is not None:
-            logger.warning("%s", upgrade_prompt, extra={"rich": True})
-    except Exception:
-        logger.warning("There was an error checking the latest version of pip.")
-        logger.debug("See below for error", exc_info=True)
+    upgrade_prompt = _self_version_check_logic(
+        state=SelfCheckState(cache_dir=options.cache_dir),
+        current_time=datetime.datetime.now(datetime.timezone.utc),
+        local_version=installed_dist.version,
+        get_remote_version=functools.partial(
+            _get_current_remote_pip_version, session, options
+        ),
+    )
+    if upgrade_prompt is not None:
+        logger.warning("%s", upgrade_prompt, extra={"rich": True})