Force an up-to-date virtualenv to avoid CI warnings
The old 16.0.0 release of virtualenv emits `DeprecationWarning: 'U' mode is deprecated` from `site.py` at startup.
@@ -45,7 +45,7 @@ jobs:
- sudo apt-get -y install gperf swig
- if [[ ! -e "./iverilog/README.txt" ]]; then rm -rf iverilog; git clone https://github.com/steveicarus/iverilog.git --depth=1 --branch v10_3; fi
- cd iverilog && autoconf && ./configure && make -j2 && sudo make install && cd ..
- - pip install tox
+ - pip install --upgrade tox virtualenv
- pyenv global system $TRAVIS_PYTHON_VERSION
script:
- echo 'Running cocotb tests with Python 3.7 ...' && echo -en 'travis_fold:start:cocotb_py37'
