Core RPi 3 install using website instructions -- error message -- install instructions broken

  Building wheel for cryptography (PEP 517) ... error
  ERROR: Command errored out with exit status 1:
   command: /usr/bin/python3 /tmp/tmptj4aufvf_in_process.py build_wheel /tmp/tmpi82xwq2m
       cwd: /tmp/pip-install-x0agn7qq/cryptography_b5b57070d4ae4aa39a5625c74dc23de3
  Complete output (193 lines):
  running bdist_wheel
  running build
  running build_py
  creating build
  creating build/lib.linux-armv7l-cpython-39
  creating build/lib.linux-armv7l-cpython-39/cryptography
  copying src/cryptography/__about__.py -> build/lib.linux-armv7l-cpython-39/cryptography
  copying src/cryptography/fernet.py -> build/lib.linux-armv7l-cpython-39/cryptography
  copying src/cryptography/exceptions.py -> build/lib.linux-armv7l-cpython-39/cryptography
  copying src/cryptography/utils.py -> build/lib.linux-armv7l-cpython-39/cryptography
  copying src/cryptography/__init__.py -> build/lib.linux-armv7l-cpython-39/cryptography
  creating build/lib.linux-armv7l-cpython-39/cryptography/hazmat
  copying src/cryptography/hazmat/_oid.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat
  copying src/cryptography/hazmat/__init__.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat
  creating build/lib.linux-armv7l-cpython-39/cryptography/x509
  copying src/cryptography/x509/base.py -> build/lib.linux-armv7l-cpython-39/cryptography/x509
  copying src/cryptography/x509/name.py -> build/lib.linux-armv7l-cpython-39/cryptography/x509
  copying src/cryptography/x509/oid.py -> build/lib.linux-armv7l-cpython-39/cryptography/x509
  copying src/cryptography/x509/certificate_transparency.py -> build/lib.linux-armv7l-cpython-39/cryptography/x509
  copying src/cryptography/x509/general_name.py -> build/lib.linux-armv7l-cpython-39/cryptography/x509
  copying src/cryptography/x509/ocsp.py -> build/lib.linux-armv7l-cpython-39/cryptography/x509
  copying src/cryptography/x509/extensions.py -> build/lib.linux-armv7l-cpython-39/cryptography/x509
  copying src/cryptography/x509/__init__.py -> build/lib.linux-armv7l-cpython-39/cryptography/x509
  creating build/lib.linux-armv7l-cpython-39/cryptography/hazmat/bindings
  copying src/cryptography/hazmat/bindings/__init__.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/bindings
  creating build/lib.linux-armv7l-cpython-39/cryptography/hazmat/backends
  copying src/cryptography/hazmat/backends/__init__.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/backends
  creating build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives
  copying src/cryptography/hazmat/primitives/hmac.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives
  copying src/cryptography/hazmat/primitives/_asymmetric.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives
  copying src/cryptography/hazmat/primitives/constant_time.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives
  copying src/cryptography/hazmat/primitives/_serialization.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives
  copying src/cryptography/hazmat/primitives/cmac.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives
  copying src/cryptography/hazmat/primitives/hashes.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives
  copying src/cryptography/hazmat/primitives/padding.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives
  copying src/cryptography/hazmat/primitives/keywrap.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives
  copying src/cryptography/hazmat/primitives/poly1305.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives
  copying src/cryptography/hazmat/primitives/_cipheralgorithm.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives
  copying src/cryptography/hazmat/primitives/__init__.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives
  creating build/lib.linux-armv7l-cpython-39/cryptography/hazmat/bindings/openssl
  copying src/cryptography/hazmat/bindings/openssl/binding.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/bindings/openssl
  copying src/cryptography/hazmat/bindings/openssl/_conditional.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/bindings/openssl
  copying src/cryptography/hazmat/bindings/openssl/__init__.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/bindings/openssl
  creating build/lib.linux-armv7l-cpython-39/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/x25519.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/dh.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/x448.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/hmac.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/cmac.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/ec.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/hashes.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/decode_asn1.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/utils.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/rsa.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/aead.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/ed448.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/dsa.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/x509.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/backend.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/poly1305.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/ed25519.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/__init__.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/backends/openssl
  copying src/cryptography/hazmat/backends/openssl/ciphers.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/backends/openssl
  creating build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/serialization
  copying src/cryptography/hazmat/primitives/serialization/pkcs12.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/serialization
  copying src/cryptography/hazmat/primitives/serialization/base.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/serialization
  copying src/cryptography/hazmat/primitives/serialization/pkcs7.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/serialization
  copying src/cryptography/hazmat/primitives/serialization/ssh.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/serialization
  copying src/cryptography/hazmat/primitives/serialization/__init__.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/serialization
  creating build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/kdf
  copying src/cryptography/hazmat/primitives/kdf/scrypt.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/kdf
  copying src/cryptography/hazmat/primitives/kdf/kbkdf.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/kdf
  copying src/cryptography/hazmat/primitives/kdf/x963kdf.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/kdf
  copying src/cryptography/hazmat/primitives/kdf/concatkdf.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/kdf
  copying src/cryptography/hazmat/primitives/kdf/__init__.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/kdf
  copying src/cryptography/hazmat/primitives/kdf/pbkdf2.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/kdf
  copying src/cryptography/hazmat/primitives/kdf/hkdf.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/kdf
  creating build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/twofactor
  copying src/cryptography/hazmat/primitives/twofactor/hotp.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/twofactor
  copying src/cryptography/hazmat/primitives/twofactor/totp.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/twofactor
  copying src/cryptography/hazmat/primitives/twofactor/__init__.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/twofactor
  creating build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/ciphers
  copying src/cryptography/hazmat/primitives/ciphers/algorithms.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/ciphers
  copying src/cryptography/hazmat/primitives/ciphers/base.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/ciphers
  copying src/cryptography/hazmat/primitives/ciphers/aead.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/ciphers
  copying src/cryptography/hazmat/primitives/ciphers/modes.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/ciphers
  copying src/cryptography/hazmat/primitives/ciphers/__init__.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/ciphers
  creating build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/asymmetric
  copying src/cryptography/hazmat/primitives/asymmetric/x25519.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/asymmetric
  copying src/cryptography/hazmat/primitives/asymmetric/dh.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/asymmetric
  copying src/cryptography/hazmat/primitives/asymmetric/x448.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/asymmetric
  copying src/cryptography/hazmat/primitives/asymmetric/types.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/asymmetric
  copying src/cryptography/hazmat/primitives/asymmetric/ec.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/asymmetric
  copying src/cryptography/hazmat/primitives/asymmetric/utils.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/asymmetric
  copying src/cryptography/hazmat/primitives/asymmetric/rsa.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/asymmetric
  copying src/cryptography/hazmat/primitives/asymmetric/ed448.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/asymmetric
  copying src/cryptography/hazmat/primitives/asymmetric/dsa.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/asymmetric
  copying src/cryptography/hazmat/primitives/asymmetric/padding.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/asymmetric
  copying src/cryptography/hazmat/primitives/asymmetric/ed25519.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/asymmetric
  copying src/cryptography/hazmat/primitives/asymmetric/__init__.py -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/primitives/asymmetric
  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 '.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 '.circleci'
  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'
  /tmp/pip-build-env-m4qx91gg/overlay/lib/python3.9/site-packages/setuptools/command/build_py.py:202: SetuptoolsDeprecationWarning:     Installing 'cryptography.hazmat.bindings._rust' as data is deprecated, please list it in `packages`.
      !!
  
  
      ############################
      # Package would be ignored #
      ############################
      Python recognizes 'cryptography.hazmat.bindings._rust' as an importable package,
      but it is not listed in the `packages` configuration of setuptools.
  
      'cryptography.hazmat.bindings._rust' has been automatically added to the distribution only
      because it may contain data files, but this behavior is likely to change
      in future versions of setuptools (and therefore is considered deprecated).
  
      Please make sure that 'cryptography.hazmat.bindings._rust' is included as a package by using
      the `packages` configuration field or the proper discovery methods
      (for example by using `find_namespace_packages(...)`/`find_namespace:`
      instead of `find_packages(...)`/`find:`).
  
      You can read more about "package discovery" and "data files" on setuptools
      documentation page.
  
  
  !!
  
    check.warn(importable)
  copying src/cryptography/py.typed -> build/lib.linux-armv7l-cpython-39/cryptography
  copying src/cryptography/hazmat/bindings/_openssl.pyi -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/bindings
  creating build/lib.linux-armv7l-cpython-39/cryptography/hazmat/bindings/_rust
  copying src/cryptography/hazmat/bindings/_rust/__init__.pyi -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/bindings/_rust
  copying src/cryptography/hazmat/bindings/_rust/asn1.pyi -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/bindings/_rust
  copying src/cryptography/hazmat/bindings/_rust/ocsp.pyi -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/bindings/_rust
  copying src/cryptography/hazmat/bindings/_rust/x509.pyi -> build/lib.linux-armv7l-cpython-39/cryptography/hazmat/bindings/_rust
  running build_ext
  generating cffi module 'build/temp.linux-armv7l-cpython-39/cryptography.hazmat.bindings._openssl.c'
  creating build/temp.linux-armv7l-cpython-39
  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/ for specific
         instructions for your platform.
      3) Check our frequently asked questions for more information:
         https://cryptography.io/en/latest/faq/
      4) Ensure you have a recent Rust toolchain installed:
         https://cryptography.io/en/latest/installation/#rust
  
**Tried all 4 of the suggestions still get error**

      Python: 3.9.2
      platform: Linux-5.15.61-v7+-armv7l-with-glibc2.31
      pip: n/a
      setuptools: 65.6.3
      setuptools_rust: 1.5.2
      rustc: n/a
      =============================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 >=1.48.0.
  ----------------------------------------
  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
Followed all of the SUDO install instructions at website
Thanks for any help but install is broken

If you followed the instructions then you should have rustc installed, but the error indicates that you don’t.

The relevant bit from those instructions:

sudo apt install cargo

Also, Python 3.9 support is being dropped by HA soon, so you should think about upgrading to 3.10.