Rust compiler error at server install
creating build/temp.linux-x86_64-3.6
generating cffi module 'build/temp.linux-x86_64-3.6/_openssl.c'
running build_rust
=============================DEBUG ASSISTANCE=============================
If you are seeing a compilation error please try the following steps to
successfully install cryptography:
1) Upgrade to the latest pip and try again. This will fix errors for most
users. See: https://pip.pypa.io/en/stable/installing/#upgrading-pip
2) Read https://cryptography.io/en/latest/installation.html for specific
instructions for your platform.
3) Check our frequently asked questions for more information:
https://cryptography.io/en/latest/faq.html
4) Ensure you have a recent Rust toolchain installed:
https://cryptography.io/en/latest/installation.html#rust
5) If you are experiencing issues with Rust for *this release only* you may
set the environment variable `CRYPTOGRAPHY_DONT_BUILD_RUST=1`.
=============================DEBUG ASSISTANCE=============================
error: Can not find Rust compiler
----------------------------------------
Command "/home/pluptest/startinblox/venv/bin/python -u -c "import setuptools, tokenize;__file__='/home/pluptest/admin/tmp/pip-install-4hbv_j67/cryptography/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /home/pluptest/admin/tmp/pip-record-dbeddxu_/install-record.txt --single-version-externally-managed --compile --install-headers /home/pluptest/startinblox/venv/include/site/python3.6/cryptography" failed with error code 1 in /home/pluptest/admin/tmp/pip-install-4hbv_j67/cryptography/
Solved by upgrading to last pip version. We may need that step in all production install.