Can't upgrade HA due cryptography / Rust on Raspian 9

Hello,
I was trying to upgrade my HA to 2021.10.2 (I am on Raspian 9) but I get this:

Requirement already satisfied: h11<0.13,>=0.11 in /srv/homeassistant/lib/python3.8/site-packages (from httpcore<0.14.0,>=0.13.3->httpx==0.19.0->homeassistant) (0.11.0)
Using legacy 'setup.py install' for voluptuous, since package 'wheel' is not installed.
Building wheels for collected packages: cryptography
  Building wheel for cryptography (PEP 517) ... error
  ERROR: Command errored out with exit status 1:
   command: /srv/homeassistant/bin/python3.8 /srv/homeassistant/lib/python3.8/site-packages/pip/_vendor/pep517/in_process/_in_process.py build_wheel /tmp/tmpm8krijpr
       cwd: /tmp/pip-install-n_p1aylv/cryptography_c77888564f9e4f098be8ef2f6ca9a25d
  Complete output (165 lines):
  running bdist_wheel
  running build
  running build_py
  creating build
  creating build/lib.linux-armv7l-3.8
  creating build/lib.linux-armv7l-3.8/cryptography
  copying src/cryptography/fernet.py -> build/lib.linux-armv7l-3.8/cryptography
  copying src/cryptography/utils.py -> build/lib.linux-armv7l-3.8/cryptography
  copying src/cryptography/__init__.py -> build/lib.linux-armv7l-3.8/cryptography
  copying src/cryptography/exceptions.py -> build/lib.linux-armv7l-3.8/cryptography
  copying src/cryptography/__about__.py -> build/lib.linux-armv7l-3.8/cryptography
  creating build/lib.linux-armv7l-3.8/cryptography/hazmat
  copying src/cryptography/hazmat/_der.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat
  copying src/cryptography/hazmat/_types.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat
  copying src/cryptography/hazmat/__init__.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat
  copying src/cryptography/hazmat/_oid.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat
  creating build/lib.linux-armv7l-3.8/cryptography/x509
  copying src/cryptography/x509/ocsp.py -> build/lib.linux-armv7l-3.8/cryptography/x509
  copying src/cryptography/x509/base.py -> build/lib.linux-armv7l-3.8/cryptography/x509
  copying src/cryptography/x509/name.py -> build/lib.linux-armv7l-3.8/cryptography/x509
  copying src/cryptography/x509/certificate_transparency.py -> build/lib.linux-armv7l-3.8/cryptography/x509
  copying src/cryptography/x509/general_name.py -> build/lib.linux-armv7l-3.8/cryptography/x509
  copying src/cryptography/x509/extensions.py -> build/lib.linux-armv7l-3.8/cryptography/x509
  copying src/cryptography/x509/__init__.py -> build/lib.linux-armv7l-3.8/cryptography/x509
  copying src/cryptography/x509/oid.py -> build/lib.linux-armv7l-3.8/cryptography/x509
  creating build/lib.linux-armv7l-3.8/cryptography/hazmat/backends
  copying src/cryptography/hazmat/backends/interfaces.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/backends
  copying src/cryptography/hazmat/backends/__init__.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/backends
  creating build/lib.linux-armv7l-3.8/cryptography/hazmat/bindings
  copying src/cryptography/hazmat/bindings/__init__.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/bindings
  creating build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives
  copying src/cryptography/hazmat/primitives/hmac.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives
  copying src/cryptography/hazmat/primitives/keywrap.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives
  copying src/cryptography/hazmat/primitives/padding.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives
  copying src/cryptography/hazmat/primitives/hashes.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives
  copying src/cryptography/hazmat/primitives/_serialization.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives
  copying src/cryptography/hazmat/primitives/cmac.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives
  copying src/cryptography/hazmat/primitives/poly1305.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives
  copying src/cryptography/hazmat/primitives/constant_time.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives
  copying src/cryptography/hazmat/primitives/_asymmetric.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives
  copying src/cryptography/hazmat/primitives/__init__.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives
  copying src/cryptography/hazmat/primitives/_cipheralgorithm.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives
  creating build/lib.linux-armv7l-3.8/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/ocsp.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/ec.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/hmac.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/dh.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/x25519.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/ed448.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/hashes.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/dsa.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/decode_asn1.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/cmac.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/utils.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/poly1305.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/encode_asn1.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/x509.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/__init__.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/ed25519.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/backend.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/ciphers.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/rsa.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/x448.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/aead.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/backends/openssl
  creating build/lib.linux-armv7l-3.8/cryptography/hazmat/bindings/openssl
  copying src/cryptography/hazmat/bindings/openssl/binding.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/bindings/openssl
  copying src/cryptography/hazmat/bindings/openssl/__init__.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/bindings/openssl
  copying src/cryptography/hazmat/bindings/openssl/_conditional.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/bindings/openssl
  creating build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/kdf
  copying src/cryptography/hazmat/primitives/kdf/x963kdf.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/kdf
  copying src/cryptography/hazmat/primitives/kdf/scrypt.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/kdf
  copying src/cryptography/hazmat/primitives/kdf/concatkdf.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/kdf
  copying src/cryptography/hazmat/primitives/kdf/hkdf.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/kdf
  copying src/cryptography/hazmat/primitives/kdf/kbkdf.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/kdf
  copying src/cryptography/hazmat/primitives/kdf/__init__.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/kdf
  copying src/cryptography/hazmat/primitives/kdf/pbkdf2.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/kdf
  creating build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/twofactor
  copying src/cryptography/hazmat/primitives/twofactor/hotp.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/twofactor
  copying src/cryptography/hazmat/primitives/twofactor/totp.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/twofactor
  copying src/cryptography/hazmat/primitives/twofactor/utils.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/twofactor
  copying src/cryptography/hazmat/primitives/twofactor/__init__.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/twofactor
  creating build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/asymmetric
  copying src/cryptography/hazmat/primitives/asymmetric/ec.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/asymmetric
  copying src/cryptography/hazmat/primitives/asymmetric/padding.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/asymmetric
  copying src/cryptography/hazmat/primitives/asymmetric/dh.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/asymmetric
  copying src/cryptography/hazmat/primitives/asymmetric/x25519.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/asymmetric
  copying src/cryptography/hazmat/primitives/asymmetric/ed448.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/asymmetric
  copying src/cryptography/hazmat/primitives/asymmetric/dsa.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/asymmetric
  copying src/cryptography/hazmat/primitives/asymmetric/utils.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/asymmetric
  copying src/cryptography/hazmat/primitives/asymmetric/__init__.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/asymmetric
  copying src/cryptography/hazmat/primitives/asymmetric/ed25519.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/asymmetric
  copying src/cryptography/hazmat/primitives/asymmetric/rsa.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/asymmetric
  copying src/cryptography/hazmat/primitives/asymmetric/x448.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/asymmetric
  creating build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/serialization
  copying src/cryptography/hazmat/primitives/serialization/base.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/serialization
  copying src/cryptography/hazmat/primitives/serialization/ssh.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/serialization
  copying src/cryptography/hazmat/primitives/serialization/__init__.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/serialization
  copying src/cryptography/hazmat/primitives/serialization/pkcs7.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/serialization
  copying src/cryptography/hazmat/primitives/serialization/pkcs12.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/serialization
  creating build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/ciphers
  copying src/cryptography/hazmat/primitives/ciphers/base.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/ciphers
  copying src/cryptography/hazmat/primitives/ciphers/algorithms.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/ciphers
  copying src/cryptography/hazmat/primitives/ciphers/modes.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/ciphers
  copying src/cryptography/hazmat/primitives/ciphers/__init__.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/ciphers
  copying src/cryptography/hazmat/primitives/ciphers/aead.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/primitives/ciphers
  running egg_info
  writing src/cryptography.egg-info/PKG-INFO
  writing dependency_links to src/cryptography.egg-info/dependency_links.txt
  writing requirements to src/cryptography.egg-info/requires.txt
  writing top-level names to src/cryptography.egg-info/top_level.txt
  reading manifest file 'src/cryptography.egg-info/SOURCES.txt'
  reading manifest template 'MANIFEST.in'
  no previously-included directories found matching 'docs/_build'
  warning: no previously-included files found matching 'vectors'
  warning: no previously-included files matching '*' found under directory 'vectors'
  warning: no previously-included files matching '*' found under directory '.github'
  warning: no previously-included files found matching 'release.py'
  warning: no previously-included files found matching '.coveragerc'
  warning: no previously-included files found matching 'codecov.yml'
  warning: no previously-included files found matching '.readthedocs.yml'
  warning: no previously-included files found matching 'dev-requirements.txt'
  warning: no previously-included files found matching 'tox.ini'
  warning: no previously-included files found matching 'mypy.ini'
  warning: no previously-included files matching '*' found under directory '.zuul.d'
  warning: no previously-included files matching '*' found under directory '.zuul.playbooks'
  adding license file 'LICENSE'
  adding license file 'LICENSE.APACHE'
  adding license file 'LICENSE.BSD'
  adding license file 'LICENSE.PSF'
  writing manifest file 'src/cryptography.egg-info/SOURCES.txt'
  copying src/cryptography/py.typed -> build/lib.linux-armv7l-3.8/cryptography
  running build_ext
  generating cffi module 'build/temp.linux-armv7l-3.8/_padding.c'
  creating build/temp.linux-armv7l-3.8
  generating cffi module 'build/temp.linux-armv7l-3.8/_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't find Rust compiler
  
  If you are using an outdated pip version, it is possible a prebuilt wheel is available for this package but pip is not able to install from it. Installing from the wheel would avoid the need for a Rust compiler.
  
  To update pip, run:
  
      pip install --upgrade pip
  
  and then retry package installation.
  
  If you did intend to build this package from source, try installing a Rust compiler from your system package manager and ensure it is on the PATH during installation. Alternatively, rustup (available at https://rustup.rs) is the recommended way to download and update the Rust compiler toolchain.
  
  This package requires Rust >=1.41.0.
  ----------------------------------------
  ERROR: Failed building wheel for cryptography
Failed to build cryptography
ERROR: Could not build wheels for cryptography which use PEP 517 and cannot be installed directly

I upgraded pip but I get the same error.

I did an

sudo apt-get install rustc

but now I get
error: Rust 1.24.1 does not match extension requirement >=1.41.0

Any idea ?

Thanks

Ok resolved as described in this topic

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh

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