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-rw-r--r--.circleci/config.yml89
-rwxr-xr-x.circleci/merge_base_branch.sh4
-rw-r--r--changelog.d/4031.misc1
-rw-r--r--changelog.d/4041.misc1
-rw-r--r--changelog.d/4046.bugfix1
-rw-r--r--changelog.d/4049.misc1
-rw-r--r--changelog.d/4050.bugfix1
-rw-r--r--changelog.d/4057.bugfix1
-rw-r--r--changelog.d/4060.bugfix1
-rw-r--r--changelog.d/4061.bugfix1
-rw-r--r--changelog.d/4067.bugfix1
-rw-r--r--synapse/federation/transaction_queue.py27
-rw-r--r--synapse/federation/transport/client.py19
-rw-r--r--synapse/handlers/room_list.py11
-rw-r--r--synapse/http/matrixfederationclient.py78
-rw-r--r--synapse/http/request_metrics.py31
-rw-r--r--synapse/notifier.py6
-rw-r--r--synapse/python_dependencies.py2
-rw-r--r--synapse/rest/media/v1/preview_url_resource.py7
-rw-r--r--synapse/util/manhole.py6
-rwxr-xr-xsynctl14
-rw-r--r--tests/handlers/test_roomlist.py39
22 files changed, 213 insertions, 129 deletions
diff --git a/.circleci/config.yml b/.circleci/config.yml
index ec3848b048..5395028426 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -23,99 +23,106 @@ jobs:
       - run: docker push matrixdotorg/synapse:latest
       - run: docker push matrixdotorg/synapse:latest-py3
   sytestpy2:
-    machine: true
+    docker:
+      - image: matrixdotorg/sytest-synapsepy2
+    working_directory: /src
     steps:
       - checkout
-      - run: docker pull matrixdotorg/sytest-synapsepy2
-      - run: docker run --rm -it -v $(pwd)\:/src -v $(pwd)/logs\:/logs matrixdotorg/sytest-synapsepy2
+      - run: /synapse_sytest.sh
       - store_artifacts:
-          path: ~/project/logs
+          path: /logs
           destination: logs
       - store_test_results:
-          path: logs
+          path: /logs
   sytestpy2postgres:
-    machine: true
+    docker:
+      - image: matrixdotorg/sytest-synapsepy2
+    working_directory: /src
     steps:
       - checkout
-      - run: docker pull matrixdotorg/sytest-synapsepy2
-      - run: docker run --rm -it -v $(pwd)\:/src -v $(pwd)/logs\:/logs -e POSTGRES=1 matrixdotorg/sytest-synapsepy2
+      - run: POSTGRES=1 /synapse_sytest.sh
       - store_artifacts:
-          path: ~/project/logs
+          path: /logs
           destination: logs
       - store_test_results:
-          path: logs
+          path: /logs
   sytestpy2merged:
-    machine: true
+    docker:
+      - image: matrixdotorg/sytest-synapsepy2
+    working_directory: /src
     steps:
       - checkout
       - run: bash .circleci/merge_base_branch.sh
-      - run: docker pull matrixdotorg/sytest-synapsepy2
-      - run: docker run --rm -it -v $(pwd)\:/src -v $(pwd)/logs\:/logs matrixdotorg/sytest-synapsepy2
+      - run: /synapse_sytest.sh
       - store_artifacts:
-          path: ~/project/logs
+          path: /logs
           destination: logs
       - store_test_results:
-          path: logs
-
+          path: /logs
   sytestpy2postgresmerged:
-    machine: true
+    docker:
+      - image: matrixdotorg/sytest-synapsepy2
+    working_directory: /src
     steps:
       - checkout
       - run: bash .circleci/merge_base_branch.sh
-      - run: docker pull matrixdotorg/sytest-synapsepy2
-      - run: docker run --rm -it -v $(pwd)\:/src -v $(pwd)/logs\:/logs -e POSTGRES=1 matrixdotorg/sytest-synapsepy2
+      - run: POSTGRES=1 /synapse_sytest.sh
       - store_artifacts:
-          path: ~/project/logs
+          path: /logs
           destination: logs
       - store_test_results:
-          path: logs
+          path: /logs
 
   sytestpy3:
-    machine: true
+    docker:
+      - image: matrixdotorg/sytest-synapsepy3
+    working_directory: /src
     steps:
       - checkout
-      - run: docker pull matrixdotorg/sytest-synapsepy3
-      - run: docker run --rm -it -v $(pwd)\:/src -v $(pwd)/logs\:/logs matrixdotorg/sytest-synapsepy3
+      - run: /synapse_sytest.sh
       - store_artifacts:
-          path: ~/project/logs
+          path: /logs
           destination: logs
       - store_test_results:
-          path: logs
+          path: /logs
   sytestpy3postgres:
-    machine: true
+    docker:
+      - image: matrixdotorg/sytest-synapsepy3
+    working_directory: /src
     steps:
       - checkout
-      - run: docker pull matrixdotorg/sytest-synapsepy3
-      - run: docker run --rm -it -v $(pwd)\:/src -v $(pwd)/logs\:/logs -e POSTGRES=1 matrixdotorg/sytest-synapsepy3
+      - run: POSTGRES=1 /synapse_sytest.sh
       - store_artifacts:
-          path: ~/project/logs
+          path: /logs
           destination: logs
       - store_test_results:
-          path: logs
+          path: /logs
   sytestpy3merged:
-    machine: true
+    docker:
+      - image: matrixdotorg/sytest-synapsepy3
+    working_directory: /src
     steps:
       - checkout
       - run: bash .circleci/merge_base_branch.sh
-      - run: docker pull matrixdotorg/sytest-synapsepy3
-      - run: docker run --rm -it -v $(pwd)\:/src -v $(pwd)/logs\:/logs matrixdotorg/sytest-synapsepy3
+      - run: /synapse_sytest.sh
       - store_artifacts:
-          path: ~/project/logs
+          path: /logs
           destination: logs
       - store_test_results:
-          path: logs
+          path: /logs
   sytestpy3postgresmerged:
-    machine: true
+    docker:
+      - image: matrixdotorg/sytest-synapsepy3
+    working_directory: /src
     steps:
       - checkout
       - run: bash .circleci/merge_base_branch.sh
-      - run: docker pull matrixdotorg/sytest-synapsepy3
-      - run: docker run --rm -it -v $(pwd)\:/src -v $(pwd)/logs\:/logs -e POSTGRES=1 matrixdotorg/sytest-synapsepy3
+      - run: POSTGRES=1 /synapse_sytest.sh
       - store_artifacts:
-          path: ~/project/logs
+          path: /logs
           destination: logs
       - store_test_results:
-          path: logs
+          path: /logs
 
 workflows:
   version: 2
diff --git a/.circleci/merge_base_branch.sh b/.circleci/merge_base_branch.sh
index 6b0bf3aa48..b2c8c40f4c 100755
--- a/.circleci/merge_base_branch.sh
+++ b/.circleci/merge_base_branch.sh
@@ -16,7 +16,7 @@ then
     GITBASE="develop"
 else
     # Get the reference, using the GitHub API
-    GITBASE=`curl -q https://api.github.com/repos/matrix-org/synapse/pulls/${CIRCLE_PR_NUMBER} | jq -r '.base.ref'`
+    GITBASE=`wget -O- https://api.github.com/repos/matrix-org/synapse/pulls/${CIRCLE_PR_NUMBER} | jq -r '.base.ref'`
 fi
 
 # Show what we are before
@@ -31,4 +31,4 @@ git fetch -u origin $GITBASE
 git merge --no-edit origin/$GITBASE
 
 # Show what we are after.
-git show -s
\ No newline at end of file
+git show -s
diff --git a/changelog.d/4031.misc b/changelog.d/4031.misc
new file mode 100644
index 0000000000..60be8b59fd
--- /dev/null
+++ b/changelog.d/4031.misc
@@ -0,0 +1 @@
+Various cleanups in the federation client code
diff --git a/changelog.d/4041.misc b/changelog.d/4041.misc
new file mode 100644
index 0000000000..8cce9daac9
--- /dev/null
+++ b/changelog.d/4041.misc
@@ -0,0 +1 @@
+Run the CircleCI builds in docker containers
diff --git a/changelog.d/4046.bugfix b/changelog.d/4046.bugfix
new file mode 100644
index 0000000000..5046dd1ce3
--- /dev/null
+++ b/changelog.d/4046.bugfix
@@ -0,0 +1 @@
+Fix issue where Python 3 users couldn't paginate /publicRooms
diff --git a/changelog.d/4049.misc b/changelog.d/4049.misc
new file mode 100644
index 0000000000..4370d9dfa6
--- /dev/null
+++ b/changelog.d/4049.misc
@@ -0,0 +1 @@
+Only colourise synctl output when attached to tty
diff --git a/changelog.d/4050.bugfix b/changelog.d/4050.bugfix
new file mode 100644
index 0000000000..3d1f6af847
--- /dev/null
+++ b/changelog.d/4050.bugfix
@@ -0,0 +1 @@
+Fix URL priewing to work in Python 3.7
diff --git a/changelog.d/4057.bugfix b/changelog.d/4057.bugfix
new file mode 100644
index 0000000000..7577731255
--- /dev/null
+++ b/changelog.d/4057.bugfix
@@ -0,0 +1 @@
+synctl will use the right python executable to run worker processes
\ No newline at end of file
diff --git a/changelog.d/4060.bugfix b/changelog.d/4060.bugfix
new file mode 100644
index 0000000000..78d69a8819
--- /dev/null
+++ b/changelog.d/4060.bugfix
@@ -0,0 +1 @@
+Manhole now works again on Python 3, instead of failing with a "couldn't match all kex parts" when connecting.
diff --git a/changelog.d/4061.bugfix b/changelog.d/4061.bugfix
new file mode 100644
index 0000000000..94ffcf7a51
--- /dev/null
+++ b/changelog.d/4061.bugfix
@@ -0,0 +1 @@
+Fix some metrics being racy and causing exceptions when polled by Prometheus.
diff --git a/changelog.d/4067.bugfix b/changelog.d/4067.bugfix
new file mode 100644
index 0000000000..78d69a8819
--- /dev/null
+++ b/changelog.d/4067.bugfix
@@ -0,0 +1 @@
+Manhole now works again on Python 3, instead of failing with a "couldn't match all kex parts" when connecting.
diff --git a/synapse/federation/transaction_queue.py b/synapse/federation/transaction_queue.py
index 98b5950800..3fdd63be95 100644
--- a/synapse/federation/transaction_queue.py
+++ b/synapse/federation/transaction_queue.py
@@ -633,14 +633,6 @@ class TransactionQueue(object):
                 transaction, json_data_cb
             )
             code = 200
-
-            if response:
-                for e_id, r in response.get("pdus", {}).items():
-                    if "error" in r:
-                        logger.warn(
-                            "Transaction returned error for %s: %s",
-                            e_id, r,
-                        )
         except HttpResponseException as e:
             code = e.code
             response = e.response
@@ -657,19 +649,24 @@ class TransactionQueue(object):
             destination, txn_id, code
         )
 
-        logger.debug("TX [%s] Sent transaction", destination)
-        logger.debug("TX [%s] Marking as delivered...", destination)
-
         yield self.transaction_actions.delivered(
             transaction, code, response
         )
 
-        logger.debug("TX [%s] Marked as delivered", destination)
+        logger.debug("TX [%s] {%s} Marked as delivered", destination, txn_id)
 
-        if code != 200:
+        if code == 200:
+            for e_id, r in response.get("pdus", {}).items():
+                if "error" in r:
+                    logger.warn(
+                        "TX [%s] {%s} Remote returned error for %s: %s",
+                        destination, txn_id, e_id, r,
+                    )
+        else:
             for p in pdus:
-                logger.info(
-                    "Failed to send event %s to %s", p.event_id, destination
+                logger.warn(
+                    "TX [%s] {%s} Failed to send event %s",
+                    destination, txn_id, p.event_id,
                 )
             success = False
 
diff --git a/synapse/federation/transport/client.py b/synapse/federation/transport/client.py
index 2ab973d6c8..edba5a9808 100644
--- a/synapse/federation/transport/client.py
+++ b/synapse/federation/transport/client.py
@@ -143,9 +143,17 @@ class TransportLayerClient(object):
             transaction (Transaction)
 
         Returns:
-            Deferred: Results of the deferred is a tuple in the form of
-            (response_code, response_body) where the response_body is a
-            python dict decoded from json
+            Deferred: Succeeds when we get a 2xx HTTP response. The result
+            will be the decoded JSON body.
+
+            Fails with ``HTTPRequestException`` if we get an HTTP response
+            code >= 300.
+
+            Fails with ``NotRetryingDestination`` if we are not yet ready
+            to retry this server.
+
+            Fails with ``FederationDeniedError`` if this destination
+            is not on our federation whitelist
         """
         logger.debug(
             "send_data dest=%s, txid=%s",
@@ -170,11 +178,6 @@ class TransportLayerClient(object):
             backoff_on_404=True,  # If we get a 404 the other side has gone
         )
 
-        logger.debug(
-            "send_data dest=%s, txid=%s, got response: 200",
-            transaction.destination, transaction.transaction_id,
-        )
-
         defer.returnValue(response)
 
     @defer.inlineCallbacks
diff --git a/synapse/handlers/room_list.py b/synapse/handlers/room_list.py
index 38e1737ec9..dc88620885 100644
--- a/synapse/handlers/room_list.py
+++ b/synapse/handlers/room_list.py
@@ -16,7 +16,7 @@
 import logging
 from collections import namedtuple
 
-from six import iteritems
+from six import PY3, iteritems
 from six.moves import range
 
 import msgpack
@@ -444,9 +444,16 @@ class RoomListNextBatch(namedtuple("RoomListNextBatch", (
 
     @classmethod
     def from_token(cls, token):
+        if PY3:
+            # The argument raw=False is only available on new versions of
+            # msgpack, and only really needed on Python 3. Gate it behind
+            # a PY3 check to avoid causing issues on Debian-packaged versions.
+            decoded = msgpack.loads(decode_base64(token), raw=False)
+        else:
+            decoded = msgpack.loads(decode_base64(token))
         return RoomListNextBatch(**{
             cls.REVERSE_KEY_DICT[key]: val
-            for key, val in msgpack.loads(decode_base64(token)).items()
+            for key, val in decoded.items()
         })
 
     def to_token(self):
diff --git a/synapse/http/matrixfederationclient.py b/synapse/http/matrixfederationclient.py
index 14b12cd1c4..fcc02fc77d 100644
--- a/synapse/http/matrixfederationclient.py
+++ b/synapse/http/matrixfederationclient.py
@@ -195,7 +195,7 @@ class MatrixFederationHttpClient(object):
         )
         self.clock = hs.get_clock()
         self._store = hs.get_datastore()
-        self.version_string = hs.version_string.encode('ascii')
+        self.version_string_bytes = hs.version_string.encode('ascii')
         self.default_timeout = 60
 
         def schedule(x):
@@ -261,8 +261,8 @@ class MatrixFederationHttpClient(object):
             ignore_backoff=ignore_backoff,
         )
 
-        method = request.method
-        destination = request.destination
+        method_bytes = request.method.encode("ascii")
+        destination_bytes = request.destination.encode("ascii")
         path_bytes = request.path.encode("ascii")
         if request.query:
             query_bytes = encode_query_args(request.query)
@@ -270,8 +270,8 @@ class MatrixFederationHttpClient(object):
             query_bytes = b""
 
         headers_dict = {
-            "User-Agent": [self.version_string],
-            "Host": [request.destination],
+            b"User-Agent": [self.version_string_bytes],
+            b"Host": [destination_bytes],
         }
 
         with limiter:
@@ -282,50 +282,51 @@ class MatrixFederationHttpClient(object):
             else:
                 retries_left = MAX_SHORT_RETRIES
 
-            url = urllib.parse.urlunparse((
-                b"matrix", destination.encode("ascii"),
+            url_bytes = urllib.parse.urlunparse((
+                b"matrix", destination_bytes,
                 path_bytes, None, query_bytes, b"",
-            )).decode('ascii')
+            ))
+            url_str = url_bytes.decode('ascii')
 
-            http_url = urllib.parse.urlunparse((
+            url_to_sign_bytes = urllib.parse.urlunparse((
                 b"", b"",
                 path_bytes, None, query_bytes, b"",
-            )).decode('ascii')
+            ))
 
             while True:
                 try:
                     json = request.get_json()
                     if json:
-                        data = encode_canonical_json(json)
-                        headers_dict["Content-Type"] = ["application/json"]
+                        headers_dict[b"Content-Type"] = [b"application/json"]
                         self.sign_request(
-                            destination, method, http_url, headers_dict, json
+                            destination_bytes, method_bytes, url_to_sign_bytes,
+                            headers_dict, json,
                         )
-                    else:
-                        data = None
-                        self.sign_request(destination, method, http_url, headers_dict)
-
-                    logger.info(
-                        "{%s} [%s] Sending request: %s %s",
-                        request.txn_id, destination, method, url
-                    )
-
-                    if data:
+                        data = encode_canonical_json(json)
                         producer = FileBodyProducer(
                             BytesIO(data),
-                            cooperator=self._cooperator
+                            cooperator=self._cooperator,
                         )
                     else:
                         producer = None
+                        self.sign_request(
+                            destination_bytes, method_bytes, url_to_sign_bytes,
+                            headers_dict,
+                        )
 
-                    request_deferred = treq.request(
-                        method,
-                        url,
+                    logger.info(
+                        "{%s} [%s] Sending request: %s %s",
+                        request.txn_id, request.destination, request.method,
+                        url_str,
+                    )
+
+                    # we don't want all the fancy cookie and redirect handling that
+                    # treq.request gives: just use the raw Agent.
+                    request_deferred = self.agent.request(
+                        method_bytes,
+                        url_bytes,
                         headers=Headers(headers_dict),
-                        data=producer,
-                        agent=self.agent,
-                        reactor=self.hs.get_reactor(),
-                        unbuffered=True
+                        bodyProducer=producer,
                     )
 
                     request_deferred = timeout_deferred(
@@ -344,9 +345,9 @@ class MatrixFederationHttpClient(object):
                     logger.warn(
                         "{%s} [%s] Request failed: %s %s: %s",
                         request.txn_id,
-                        destination,
-                        method,
-                        url,
+                        request.destination,
+                        request.method,
+                        url_str,
                         _flatten_response_never_received(e),
                     )
 
@@ -366,7 +367,7 @@ class MatrixFederationHttpClient(object):
                         logger.debug(
                             "{%s} [%s] Waiting %ss before re-sending...",
                             request.txn_id,
-                            destination,
+                            request.destination,
                             delay,
                         )
 
@@ -378,7 +379,7 @@ class MatrixFederationHttpClient(object):
             logger.info(
                 "{%s} [%s] Got response headers: %d %s",
                 request.txn_id,
-                destination,
+                request.destination,
                 response.code,
                 response.phrase.decode('ascii', errors='replace'),
             )
@@ -411,8 +412,9 @@ class MatrixFederationHttpClient(object):
                 destination_is must be non-None.
             method (bytes): The HTTP method of the request
             url_bytes (bytes): The URI path of the request
-            headers_dict (dict): Dictionary of request headers to append to
-            content (bytes): The body of the request
+            headers_dict (dict[bytes, list[bytes]]): Dictionary of request headers to
+                append to
+            content (object): The body of the request
             destination_is (bytes): As 'destination', but if the destination is an
                 identity server
 
diff --git a/synapse/http/request_metrics.py b/synapse/http/request_metrics.py
index fedb4e6b18..62045a918b 100644
--- a/synapse/http/request_metrics.py
+++ b/synapse/http/request_metrics.py
@@ -39,7 +39,8 @@ outgoing_responses_counter = Counter(
 )
 
 response_timer = Histogram(
-    "synapse_http_server_response_time_seconds", "sec",
+    "synapse_http_server_response_time_seconds",
+    "sec",
     ["method", "servlet", "tag", "code"],
 )
 
@@ -79,15 +80,11 @@ response_size = Counter(
 # than when the response was written.
 
 in_flight_requests_ru_utime = Counter(
-    "synapse_http_server_in_flight_requests_ru_utime_seconds",
-    "",
-    ["method", "servlet"],
+    "synapse_http_server_in_flight_requests_ru_utime_seconds", "", ["method", "servlet"]
 )
 
 in_flight_requests_ru_stime = Counter(
-    "synapse_http_server_in_flight_requests_ru_stime_seconds",
-    "",
-    ["method", "servlet"],
+    "synapse_http_server_in_flight_requests_ru_stime_seconds", "", ["method", "servlet"]
 )
 
 in_flight_requests_db_txn_count = Counter(
@@ -134,7 +131,7 @@ def _get_in_flight_counts():
     # type
     counts = {}
     for rm in reqs:
-        key = (rm.method, rm.name,)
+        key = (rm.method, rm.name)
         counts[key] = counts.get(key, 0) + 1
 
     return counts
@@ -175,7 +172,8 @@ class RequestMetrics(object):
             if context != self.start_context:
                 logger.warn(
                     "Context have unexpectedly changed %r, %r",
-                    context, self.start_context
+                    context,
+                    self.start_context,
                 )
                 return
 
@@ -192,10 +190,10 @@ class RequestMetrics(object):
         resource_usage = context.get_resource_usage()
 
         response_ru_utime.labels(self.method, self.name, tag).inc(
-            resource_usage.ru_utime,
+            resource_usage.ru_utime
         )
         response_ru_stime.labels(self.method, self.name, tag).inc(
-            resource_usage.ru_stime,
+            resource_usage.ru_stime
         )
         response_db_txn_count.labels(self.method, self.name, tag).inc(
             resource_usage.db_txn_count
@@ -222,8 +220,15 @@ class RequestMetrics(object):
         diff = new_stats - self._request_stats
         self._request_stats = new_stats
 
-        in_flight_requests_ru_utime.labels(self.method, self.name).inc(diff.ru_utime)
-        in_flight_requests_ru_stime.labels(self.method, self.name).inc(diff.ru_stime)
+        # max() is used since rapid use of ru_stime/ru_utime can end up with the
+        # count going backwards due to NTP, time smearing, fine-grained
+        # correction, or floating points. Who knows, really?
+        in_flight_requests_ru_utime.labels(self.method, self.name).inc(
+            max(diff.ru_utime, 0)
+        )
+        in_flight_requests_ru_stime.labels(self.method, self.name).inc(
+            max(diff.ru_stime, 0)
+        )
 
         in_flight_requests_db_txn_count.labels(self.method, self.name).inc(
             diff.db_txn_count
diff --git a/synapse/notifier.py b/synapse/notifier.py
index 340b16ce25..de02b1017e 100644
--- a/synapse/notifier.py
+++ b/synapse/notifier.py
@@ -186,9 +186,9 @@ class Notifier(object):
         def count_listeners():
             all_user_streams = set()
 
-            for x in self.room_to_user_streams.values():
+            for x in list(self.room_to_user_streams.values()):
                 all_user_streams |= x
-            for x in self.user_to_user_stream.values():
+            for x in list(self.user_to_user_stream.values()):
                 all_user_streams.add(x)
 
             return sum(stream.count_listeners() for stream in all_user_streams)
@@ -196,7 +196,7 @@ class Notifier(object):
 
         LaterGauge(
             "synapse_notifier_rooms", "", [],
-            lambda: count(bool, self.room_to_user_streams.values()),
+            lambda: count(bool, list(self.room_to_user_streams.values())),
         )
         LaterGauge(
             "synapse_notifier_users", "", [],
diff --git a/synapse/python_dependencies.py b/synapse/python_dependencies.py
index 2947f37f1a..f51184b50d 100644
--- a/synapse/python_dependencies.py
+++ b/synapse/python_dependencies.py
@@ -55,7 +55,7 @@ REQUIREMENTS = {
     "sortedcontainers>=1.4.4": ["sortedcontainers"],
     "pysaml2>=3.0.0": ["saml2"],
     "pymacaroons-pynacl>=0.9.3": ["pymacaroons"],
-    "msgpack-python>=0.3.0": ["msgpack"],
+    "msgpack-python>=0.4.2": ["msgpack"],
     "phonenumbers>=8.2.0": ["phonenumbers"],
     "six>=1.10": ["six"],
 
diff --git a/synapse/rest/media/v1/preview_url_resource.py b/synapse/rest/media/v1/preview_url_resource.py
index af01040a38..8c892ff187 100644
--- a/synapse/rest/media/v1/preview_url_resource.py
+++ b/synapse/rest/media/v1/preview_url_resource.py
@@ -596,10 +596,13 @@ def _iterate_over_text(tree, *tags_to_ignore):
     # to be returned.
     elements = iter([tree])
     while True:
-        el = next(elements)
+        el = next(elements, None)
+        if el is None:
+            return
+
         if isinstance(el, string_types):
             yield el
-        elif el is not None and el.tag not in tags_to_ignore:
+        elif el.tag not in tags_to_ignore:
             # el.text is the text before the first child, so we can immediately
             # return it if the text exists.
             if el.text:
diff --git a/synapse/util/manhole.py b/synapse/util/manhole.py
index 8d0f2a8918..9cb7e9c9ab 100644
--- a/synapse/util/manhole.py
+++ b/synapse/util/manhole.py
@@ -70,6 +70,8 @@ def manhole(username, password, globals):
     Returns:
         twisted.internet.protocol.Factory: A factory to pass to ``listenTCP``
     """
+    if not isinstance(password, bytes):
+        password = password.encode('ascii')
 
     checker = checkers.InMemoryUsernamePasswordDatabaseDontUse(
         **{username: password}
@@ -82,7 +84,7 @@ def manhole(username, password, globals):
     )
 
     factory = manhole_ssh.ConchFactory(portal.Portal(rlm, [checker]))
-    factory.publicKeys['ssh-rsa'] = Key.fromString(PUBLIC_KEY)
-    factory.privateKeys['ssh-rsa'] = Key.fromString(PRIVATE_KEY)
+    factory.publicKeys[b'ssh-rsa'] = Key.fromString(PUBLIC_KEY)
+    factory.privateKeys[b'ssh-rsa'] = Key.fromString(PRIVATE_KEY)
 
     return factory
diff --git a/synctl b/synctl
index 09b64459b1..bb8cb084cc 100755
--- a/synctl
+++ b/synctl
@@ -1,6 +1,7 @@
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
+# Copyright 2018 New Vector Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -48,7 +49,16 @@ def pid_running(pid):
 
 
 def write(message, colour=NORMAL, stream=sys.stdout):
-    if colour == NORMAL:
+    # Lets check if we're writing to a TTY before colouring
+    should_colour = False
+    try:
+        should_colour = stream.isatty()
+    except AttributeError:
+        # Just in case `isatty` isn't defined on everything. The python
+        # docs are incredibly vague.
+        pass
+
+    if not should_colour:
         stream.write(message + "\n")
     else:
         stream.write(colour + message + NORMAL + "\n")
@@ -77,7 +87,7 @@ def start(configfile):
 
 def start_worker(app, configfile, worker_configfile):
     args = [
-        "python", "-B",
+        sys.executable, "-B",
         "-m", app,
         "-c", configfile,
         "-c", worker_configfile
diff --git a/tests/handlers/test_roomlist.py b/tests/handlers/test_roomlist.py
new file mode 100644
index 0000000000..61eebb6985
--- /dev/null
+++ b/tests/handlers/test_roomlist.py
@@ -0,0 +1,39 @@
+# -*- coding: utf-8 -*-
+# Copyright 2018 New Vector Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from synapse.handlers.room_list import RoomListNextBatch
+
+import tests.unittest
+import tests.utils
+
+
+class RoomListTestCase(tests.unittest.TestCase):
+    """ Tests RoomList's RoomListNextBatch. """
+
+    def setUp(self):
+        pass
+
+    def test_check_read_batch_tokens(self):
+        batch_token = RoomListNextBatch(
+            stream_ordering="abcdef",
+            public_room_stream_id="123",
+            current_limit=20,
+            direction_is_forward=True,
+        ).to_token()
+        next_batch = RoomListNextBatch.from_token(batch_token)
+        self.assertEquals(next_batch.stream_ordering, "abcdef")
+        self.assertEquals(next_batch.public_room_stream_id, "123")
+        self.assertEquals(next_batch.current_limit, 20)
+        self.assertEquals(next_batch.direction_is_forward, True)