Merge branch 'maint-0.4.8'

diff --cc .gitlab-ci.yml
index a5957883204e9748f6eebe509b9624ff745e376c,fc0f616daf0946f96ccb70505f8db92c718731f9..3aff584a846c32edaa73f512d61bfb240ee529a7
--- 1/.gitlab-ci.yml
--- 2/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@@ -113,11 -115,11 +115,12 @@@ variables
  
          git clone --shallow-since "$CHUTNEY_SHALLOW_SINCE" https://gitlab.torproject.org/tpo/core/chutney.git
          git -C ./chutney checkout "$CHUTNEY_COMMIT"
+ 
+         apt install python3-venv
++
          export CHUTNEY_PATH="$(pwd)/chutney"
-         # Have pip install chutney's python dependencies by installing chutney
-         # itself.
-         apt-get install python3-pip
-         pip3 install --user ./chutney
+         python3 -m venv venv
+         venv/bin/pip install ./chutney
        fi
      - if [ "$TRACING" = yes ]; then apt install liblttng-ust-dev; fi