error message when installing pyodbc in a venv

I have a fresh install of Ubuntu 20.04. I have the following packages installed:

python3-venv
python3-pip
python3-wheel
unixodbc-dev

If I run these commands:

python3 -m venv ./test_env
. ./test_env/bin/activate
pip3 install pyodbc

This is the output I get. The package does seem to install successfully, in spite of the fact that this is an error, not a warning.

Collecting pyodbc
  Downloading pyodbc-4.0.30.tar.gz (266 kB)
     |████████████████████████████████| 266 kB 3.5 MB/s
Building wheels for collected packages: pyodbc
  Building wheel for pyodbc (setup.py) ... error
  ERROR: Command errored out with exit status 1:
   command: /tmp/test_env/bin/python3 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-5uh1fr89/pyodbc/setup.py'"'"'; __file__='"'"'/tmp/pip-install-5uh1fr89/pyodbc/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d /tmp/pip-wheel-snlh9z0l
       cwd: /tmp/pip-install-5uh1fr89/pyodbc/
  Complete output (6 lines):
  usage: setup.py [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...]
     or: setup.py --help [cmd1 cmd2 ...]
     or: setup.py --help-commands
     or: setup.py cmd --help

  error: invalid command 'bdist_wheel'
  ----------------------------------------
  ERROR: Failed building wheel for pyodbc
  Running setup.py clean for pyodbc
Failed to build pyodbc
Installing collected packages: pyodbc
    Running setup.py install for pyodbc ... done
Successfully installed pyodbc-4.0.30

Note that I do not get this error if I install pyodbc outside the venv. Also, if I install it outside the venv FIRST, then pip will cache the wheel package and use it when installing in the venv, and I don't get the above error in that case.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: python3 3.8.2-0ubuntu2
ProcVersionSignature: Ubuntu 5.4.0-29.33-generic 5.4.30
Uname: Linux 5.4.0-29-generic x86_64
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Sat May 16 10:14:28 2020
InstallationDate: Installed on 2020-05-16 (0 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: python3-defaults
UpgradeStatus: No upgrade log present (probably fresh install)