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-rw-r--r--synapse/__init__.py2
-rw-r--r--synapse/event_auth.py7
-rw-r--r--synapse/handlers/profile.py8
-rw-r--r--synapse/metrics/background_process_metrics.py8
-rw-r--r--synapse/python_dependencies.py5
5 files changed, 15 insertions, 15 deletions
diff --git a/synapse/__init__.py b/synapse/__init__.py
index b1f7a89fba..43c5821ade 100644
--- a/synapse/__init__.py
+++ b/synapse/__init__.py
@@ -27,4 +27,4 @@ try:
 except ImportError:
     pass
 
-__version__ = "0.33.5.1"
+__version__ = "0.33.6"
diff --git a/synapse/event_auth.py b/synapse/event_auth.py
index 02fa46ef7f..af3eee95b9 100644
--- a/synapse/event_auth.py
+++ b/synapse/event_auth.py
@@ -155,10 +155,7 @@ def check(event, auth_events, do_sig_check=True, do_size_check=True):
 
         if user_level < invite_level:
             raise AuthError(
-                403, (
-                    "You cannot issue a third party invite for %s." %
-                    (event.content.display_name,)
-                )
+                403, "You don't have permission to invite users",
             )
         else:
             logger.debug("Allowing! %s", event)
@@ -305,7 +302,7 @@ def _is_membership_change_allowed(event, auth_events):
 
             if user_level < invite_level:
                 raise AuthError(
-                    403, "You cannot invite user %s." % target_user_id
+                    403, "You don't have permission to invite users",
                 )
     elif Membership.JOIN == membership:
         # Joins are valid iff caller == target and they were:
diff --git a/synapse/handlers/profile.py b/synapse/handlers/profile.py
index f284d5a385..1dfbde84fd 100644
--- a/synapse/handlers/profile.py
+++ b/synapse/handlers/profile.py
@@ -142,10 +142,8 @@ class BaseProfileHandler(BaseHandler):
                 if e.code != 404:
                     logger.exception("Failed to get displayname")
                 raise
-            except Exception:
-                logger.exception("Failed to get displayname")
-            else:
-                defer.returnValue(result["displayname"])
+
+            defer.returnValue(result["displayname"])
 
     @defer.inlineCallbacks
     def set_displayname(self, target_user, requester, new_displayname, by_admin=False):
@@ -199,8 +197,6 @@ class BaseProfileHandler(BaseHandler):
                 if e.code != 404:
                     logger.exception("Failed to get avatar_url")
                 raise
-            except Exception:
-                logger.exception("Failed to get avatar_url")
 
             defer.returnValue(result["avatar_url"])
 
diff --git a/synapse/metrics/background_process_metrics.py b/synapse/metrics/background_process_metrics.py
index 173908299c..037f1c490e 100644
--- a/synapse/metrics/background_process_metrics.py
+++ b/synapse/metrics/background_process_metrics.py
@@ -101,9 +101,13 @@ class _Collector(object):
             labels=["name"],
         )
 
-        # We copy the dict so that it doesn't change from underneath us
+        # We copy the dict so that it doesn't change from underneath us.
+        # We also copy the process lists as that can also change
         with _bg_metrics_lock:
-            _background_processes_copy = dict(_background_processes)
+            _background_processes_copy = {
+                k: list(v)
+                for k, v in six.iteritems(_background_processes)
+            }
 
         for desc, processes in six.iteritems(_background_processes_copy):
             background_process_in_flight_count.add_metric(
diff --git a/synapse/python_dependencies.py b/synapse/python_dependencies.py
index 0f339a0320..d4d983b00a 100644
--- a/synapse/python_dependencies.py
+++ b/synapse/python_dependencies.py
@@ -58,7 +58,10 @@ REQUIREMENTS = {
     "msgpack-python>=0.3.0": ["msgpack"],
     "phonenumbers>=8.2.0": ["phonenumbers"],
     "six>=1.10": ["six"],
-    "prometheus_client>=0.0.18": ["prometheus_client"],
+
+    # prometheus_client 0.4.0 changed the format of counter metrics
+    # (cf https://github.com/matrix-org/synapse/issues/4001)
+    "prometheus_client>=0.0.18,<0.4.0": ["prometheus_client"],
 
     # we use attr.s(slots), which arrived in 16.0.0
     "attrs>=16.0.0": ["attr>=16.0.0"],