Can't update HA to the latest version

I also had the same issue as described here: Cannot update to 2021.10.0
Then I did: sudo apt install rustc. That went well. Then I tried to update HA again, but got this:

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/tmp3uwuzyl4
       cwd: /tmp/pip-install-gh906s55/cryptography_25d955d7317844eaafc2dd593c3a8cea
  Complete output (153 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/utils.py -> build/lib.linux-armv7l-3.8/cryptography
  copying src/cryptography/fernet.py -> build/lib.linux-armv7l-3.8/cryptography
  copying src/cryptography/__init__.py -> build/lib.linux-armv7l-3.8/cryptography
  copying src/cryptography/__about__.py -> build/lib.linux-armv7l-3.8/cryptography
  copying src/cryptography/exceptions.py -> build/lib.linux-armv7l-3.8/cryptography
  creating 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
  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/certificate_transparency.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/name.py -> build/lib.linux-armv7l-3.8/cryptography/x509
  copying src/cryptography/x509/general_name.py -> build/lib.linux-armv7l-3.8/cryptography/x509
  creating build/lib.linux-armv7l-3.8/cryptography/hazmat
  copying src/cryptography/hazmat/_oid.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/_der.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat
  copying src/cryptography/hazmat/_types.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat
  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/_cipheralgorithm.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/_serialization.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/__init__.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/poly1305.py -> 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/hashes.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
  creating 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
  copying src/cryptography/hazmat/backends/interfaces.py -> build/lib.linux-armv7l-3.8/cryptography/hazmat/backends
  creating 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/binding.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/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/hotp.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/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/__init__.py -> 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/pkcs12.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
  creating 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/dsa.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
  copying src/cryptography/hazmat/primitives/asymmetric/utils.py -> 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/__init__.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/ed25519.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
  creating 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
  copying src/cryptography/hazmat/primitives/ciphers/algorithms.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/modes.py -> 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
  creating 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/pbkdf2.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/x963kdf.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/scrypt.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
  creating 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
  copying src/cryptography/hazmat/backends/openssl/rsa.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/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/dsa.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/utils.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/__init__.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/ed25519.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/backend.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/dh.py -> 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/x25519.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/hashes.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
  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: [Errno 2] No such file or directory: 'cargo'
  ----------------------------------------
  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
WARNING: Ignoring invalid distribution -ip (/srv/homeassistant/lib/python3.8/site-packages)
WARNING: Ignoring invalid distribution -ip (/srv/homeassistant/lib/python3.8/site-packages)

So what can I do now?

You need to install cargo.

sudo apt install cargo

That did something. Now I get this:

Successfully built cryptography
WARNING: Ignoring invalid distribution -ip (/srv/homeassistant/lib/python3.8/site-packages)
Installing collected packages: voluptuous, charset-normalizer, certifi, requests, PyJWT, pip, httpx, cryptography, ciso8601, awesomeversion, homeassistant
  Attempting uninstall: voluptuous
    WARNING: Ignoring invalid distribution -ip (/srv/homeassistant/lib/python3.8/site-packages)
    Found existing installation: voluptuous 0.12.1
    Uninstalling voluptuous-0.12.1:
      Successfully uninstalled voluptuous-0.12.1
  Attempting uninstall: certifi
    WARNING: Ignoring invalid distribution -ip (/srv/homeassistant/lib/python3.8/site-packages)
    Found existing installation: certifi 2020.12.5
    Uninstalling certifi-2020.12.5:
      Successfully uninstalled certifi-2020.12.5
  Attempting uninstall: requests
    WARNING: Ignoring invalid distribution -ip (/srv/homeassistant/lib/python3.8/site-packages)
    Found existing installation: requests 2.25.1
    Uninstalling requests-2.25.1:
      Successfully uninstalled requests-2.25.1
  Attempting uninstall: PyJWT
    WARNING: Ignoring invalid distribution -ip (/srv/homeassistant/lib/python3.8/site-packages)
    Found existing installation: PyJWT 1.7.1
    Uninstalling PyJWT-1.7.1:
      Successfully uninstalled PyJWT-1.7.1
  Attempting uninstall: pip
    WARNING: Ignoring invalid distribution -ip (/srv/homeassistant/lib/python3.8/site-packages)
    Found existing installation: pip 21.2.4
    Uninstalling pip-21.2.4:
      Successfully uninstalled pip-21.2.4
ERROR: Could not install packages due to an OSError: [Errno 13] Permission denied: 'REQUESTED'
Check the permissions.

WARNING: Ignoring invalid distribution -ip (/srv/homeassistant/lib/python3.8/site-packages)
WARNING: Ignoring invalid distribution -ip (/srv/homeassistant/lib/python3.8/site-packages)

Tried installing again, and now it works. Thanks.

I also experienced this issue when trying to upgrade hass core, however when trying to install cargo I got an error of E: Package 'cargo' has no installation candidate to solve this I did the following:

sudo apt remove rustc
curl https://sh.rustup.rs -sSf | sh

This installed rust and cargo on my Rpi4 running RaspberryPi 10 (Buster). Just leaving this here for anyone else that encounters the issue on Raspian. Make sure to run the curl command as the user who is running home-assistant.