From 1c5158e01095a59550ba74f362cf1f024073922a Mon Sep 17 00:00:00 2001
From: danieleades <33452915+danieleades@users.noreply.github.com>
Date: Fri, 12 May 2023 23:50:44 +0100
Subject: [PATCH] Remove 'sphinx.ext.duration' from the mypy whitelist (#11404)

---
 pyproject.toml         | 1 -
 sphinx/ext/duration.py | 2 +-
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/pyproject.toml b/pyproject.toml
index 7cc531bb8..3b94db137 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -330,7 +330,6 @@ module = [
     "sphinx.ext.autosummary",
     "sphinx.ext.autosummary.generate",
     "sphinx.ext.doctest",
-    "sphinx.ext.duration",
     "sphinx.ext.graphviz",
     "sphinx.ext.inheritance_diagram",
     "sphinx.ext.intersphinx",
diff --git a/sphinx/ext/duration.py b/sphinx/ext/duration.py
index 749e2910b..154412441 100644
--- a/sphinx/ext/duration.py
+++ b/sphinx/ext/duration.py
@@ -57,7 +57,7 @@ def on_source_read(app: Sphinx, docname: str, content: list[str]) -> None:
 
 def on_doctree_read(app: Sphinx, doctree: nodes.document) -> None:
     """Record a reading duration."""
-    started_at = app.env.temp_data.get('started_at')
+    started_at = app.env.temp_data['started_at']
     duration = datetime.now() - started_at
     domain = cast(DurationDomain, app.env.get_domain('duration'))
     domain.note_reading_duration(duration)