Merge branch 'release-v1.12.4' of github.com:matrix-org/synapse into anoa/temp_working_cache_config github/anoa/temp_working_cache_config anoa/temp_working_cache_config

* 'release-v1.12.4' of github.com:matrix-org/synapse: (123 commits)
  1.12.4
  formatting for the changelog
  1.12.4rc1
  1.12.4rc1
  Do not treat display names as globs for push rules. (#7271)
  Query missing cross-signing keys on local sig upload (#7289)
  Fix changelog file
  Support GET account_data requests on a worker (#7311)
  Revert "Query missing cross-signing keys on local sig upload"
  Always send the user updates to their own device list (#7160)
  Query missing cross-signing keys on local sig upload
  Only register devices edu handler on the master process (#7255)
  tweak changelog
  1.12.3
  Fix the debian build in a better way. (#7212)
  Fix changelog wording
  1.12.2
  Pin Pillow>=4.3.0,<7.1.0 to fix dep issue
  1.12.1
  Note where bugs were introduced
  ...

1 files changed, 3 insertions, 2 deletions

diff --git a/synapse/metrics/background_process_metrics.py b/synapse/metrics/background_process_metrics.py
index b65bcd8806..8449ef82f7 100644
--- a/synapse/metrics/background_process_metrics.py
+++ b/synapse/metrics/background_process_metrics.py
@@ -17,6 +17,7 @@ import logging
 import threading
 from asyncio import iscoroutine
 from functools import wraps
+from typing import Dict, Set
 
 import six
 
@@ -80,13 +81,13 @@ _background_process_db_sched_duration = Counter(
 # map from description to a counter, so that we can name our logcontexts
 # incrementally. (It actually duplicates _background_process_start_count, but
 # it's much simpler to do so than to try to combine them.)
-_background_process_counts = {}  # type: dict[str, int]
+_background_process_counts = {}  # type: Dict[str, int]
 
 # map from description to the currently running background processes.
 #
 # it's kept as a dict of sets rather than a big set so that we can keep track
 # of process descriptions that no longer have any active processes.
-_background_processes = {}  # type: dict[str, set[_BackgroundProcess]]
+_background_processes = {}  # type: Dict[str, Set[_BackgroundProcess]]
 
 # A lock that covers the above dicts
 _bg_metrics_lock = threading.Lock()