tox: posargs with `:` crashes virtualenv

Issue

posargs with : are not properly passed, virtualenv crashes.

Environment

Provide at least:

• OS: Ubuntu 20.04
• pip list of the host Python where tox is installed:

Package               Version
--------------------- ---------
anyio                 3.6.2
artifacts-keyring     0.3.2
attrs                 22.2.0
bleach                5.0.1
cachetools            5.2.1
certifi               2022.12.7
cffi                  1.15.1
chardet               5.1.0
charset-normalizer    2.1.1
click                 8.1.3
colorama              0.4.6
commonmark            0.9.1
cryptography          39.0.0
distlib               0.3.6
docutils              0.19
exceptiongroup        1.1.0
filelock              3.9.0
h11                   0.14.0
html5lib              1.1
httpcore              0.16.3
httpx                 0.23.3
idna                  3.4
importlib-metadata    6.0.0
importlib-resources   5.10.2
iniconfig             2.0.0
jaraco.classes        3.2.3
jeepney               0.8.0
keyring               23.13.1
more-itertools        9.0.0
packaging             23.0
pip                   22.3.1
pkginfo               1.9.6
platformdirs          2.6.2
pluggy                1.0.0
pycparser             2.21
pydantic              1.10.4
Pygments              2.14.0
pyproject_api         1.4.0
pytest                7.2.0
pytest-httpx          0.21.2
readme-renderer       37.3
requests              2.28.1
requests-toolbelt     0.10.1
rfc3986               1.5.0
rich                  13.0.1
SecretStorage         3.3.3
setuptools            57.5.0
simpleindex           0.5.0
simpleindex_artifacts 0.3
six                   1.16.0
sniffio               1.3.0
starlette             0.23.1
toml                  0.10.2
tomli                 2.0.1
tox                   4.2.8
twine                 4.0.2
typing_extensions     4.4.0
urllib3               1.26.14
uvicorn               0.20.0
virtualenv            20.17.1
webencodings          0.5.1
wheel                 0.38.4
zipp                  3.11.0

Output of running tox

Provide the output of tox -rvv:

ROOT: 89 D setup logging to DEBUG on pid 26084 [tox/report.py:221]
.pkg: 156 I find interpreter for spec PythonSpec(path=/usr/local/bin/python) [virtualenv/discovery/builtin.py:56]
.pkg: 156 I proposed PythonInfo(spec=CPython3.8.16.final.0-64, exe=/usr/local/bin/python, platform=linux, version='3.8.16 (default, Dec  8 2022, 03:18:29) \n[GCC 10.2.1 20210110]', encoding_fs_io=utf-8-utf-8) [virtualenv/discovery/builtin.py:63]
.pkg: 156 D accepted PythonInfo(spec=CPython3.8.16.final.0-64, exe=/usr/local/bin/python, platform=linux, version='3.8.16 (default, Dec  8 2022, 03:18:29) \n[GCC 10.2.1 20210110]', encoding_fs_io=utf-8-utf-8) [virtualenv/discovery/builtin.py:65]
.pkg: 158 D filesystem is case-sensitive [virtualenv/info.py:24]
.pkg: 180 I find interpreter for spec PythonSpec(path=/usr/local/bin/python) [virtualenv/discovery/builtin.py:56]
.pkg: 180 I proposed PythonInfo(spec=CPython3.8.16.final.0-64, exe=/usr/local/bin/python, platform=linux, version='3.8.16 (default, Dec  8 2022, 03:18:29) \n[GCC 10.2.1 20210110]', encoding_fs_io=utf-8-utf-8) [virtualenv/discovery/builtin.py:63]
.pkg: 181 D accepted PythonInfo(spec=CPython3.8.16.final.0-64, exe=/usr/local/bin/python, platform=linux, version='3.8.16 (default, Dec  8 2022, 03:18:29) \n[GCC 10.2.1 20210110]', encoding_fs_io=utf-8-utf-8) [virtualenv/discovery/builtin.py:65]
.pkg: 184 I find interpreter for spec PythonSpec(path=/usr/local/bin/python) [virtualenv/discovery/builtin.py:56]
.pkg: 185 I proposed PythonInfo(spec=CPython3.8.16.final.0-64, exe=/usr/local/bin/python, platform=linux, version='3.8.16 (default, Dec  8 2022, 03:18:29) \n[GCC 10.2.1 20210110]', encoding_fs_io=utf-8-utf-8) [virtualenv/discovery/builtin.py:63]
.pkg: 185 D accepted PythonInfo(spec=CPython3.8.16.final.0-64, exe=/usr/local/bin/python, platform=linux, version='3.8.16 (default, Dec  8 2022, 03:18:29) \n[GCC 10.2.1 20210110]', encoding_fs_io=utf-8-utf-8) [virtualenv/discovery/builtin.py:65]
.pkg: 189 I find interpreter for spec PythonSpec(path=/usr/local/bin/python) [virtualenv/discovery/builtin.py:56]
.pkg: 190 I proposed PythonInfo(spec=CPython3.8.16.final.0-64, exe=/usr/local/bin/python, platform=linux, version='3.8.16 (default, Dec  8 2022, 03:18:29) \n[GCC 10.2.1 20210110]', encoding_fs_io=utf-8-utf-8) [virtualenv/discovery/builtin.py:63]
.pkg: 190 D accepted PythonInfo(spec=CPython3.8.16.final.0-64, exe=/usr/local/bin/python, platform=linux, version='3.8.16 (default, Dec  8 2022, 03:18:29) \n[GCC 10.2.1 20210110]', encoding_fs_io=utf-8-utf-8) [virtualenv/discovery/builtin.py:65]
.pkg: 204 I find interpreter for spec PythonSpec(path=/usr/local/bin/python) [virtualenv/discovery/builtin.py:56]
.pkg: 204 I proposed PythonInfo(spec=CPython3.8.16.final.0-64, exe=/usr/local/bin/python, platform=linux, version='3.8.16 (default, Dec  8 2022, 03:18:29) \n[GCC 10.2.1 20210110]', encoding_fs_io=utf-8-utf-8) [virtualenv/discovery/builtin.py:63]
.pkg: 205 D accepted PythonInfo(spec=CPython3.8.16.final.0-64, exe=/usr/local/bin/python, platform=linux, version='3.8.16 (default, Dec  8 2022, 03:18:29) \n[GCC 10.2.1 20210110]', encoding_fs_io=utf-8-utf-8) [virtualenv/discovery/builtin.py:65]
usage: virtualenv [--version] [--with-traceback] [-v | -q] [--read-only-app-data] [--app-data APP_DATA] [--reset-app-data] [--upgrade-embed-wheels] [--discovery {builtin}] [-p py] [--try-first-with py_exe]
                  [--creator {builtin,cpython3-posix,venv}] [--seeder {app-data,pip}] [--no-seed] [--activators comma_sep_list] [--clear] [--no-vcs-ignore] [--system-site-packages] [--symlinks | --copies] [--no-download | --download]
                  [--extra-search-dir d [d ...]] [--pip version] [--setuptools version] [--wheel version] [--no-pip] [--no-setuptools] [--no-wheel] [--no-periodic-update] [--symlink-app-data] [--prompt prompt] [-h]
                  dest
virtualenv: error: argument dest: destination '--junitxml=unit_tests_results.xml --cov=autoavatar --cov-report=xml:coverage.xml' must not contain the path separator (:) as this would break the activation scripts

Minimal example

If possible, provide a minimal reproducer for the issue:

UPDATE After doing the investigation, it turned out that one environment influences the other. Here is a minimum tox.ini to reproduce the issue: tox.int:

[tox]
minversion = 4.3.1

[testenv:hello]
commands =
    python ./helloworld.py {posargs:World}

[testenv:dev]
envdir = {posargs:venv}
usedevelop = True
commands =
    python ./helloworld.py World

tox -e hello -- x:y

...
usage: virtualenv [--version] [--with-traceback] [-v | -q] [--read-only-app-data] [--app-data APP_DATA] [--reset-app-data] [--upgrade-embed-wheels] [--discovery {builtin}] [-p py] [--try-first-with py_exe]
                  [--creator {builtin,cpython3-posix,venv}] [--seeder {app-data,pip}] [--no-seed] [--activators comma_sep_list] [--clear] [--no-vcs-ignore] [--system-site-packages] [--symlinks | --copies] [--no-download | --download]
                  [--extra-search-dir d [d ...]] [--pip version] [--setuptools version] [--wheel version] [--no-pip] [--no-setuptools] [--no-wheel] [--no-periodic-update] [--symlink-app-data] [--prompt prompt] [-h]
                  dest
virtualenv: error: argument dest: destination 'x:y' must not contain the path separator (:) as this would break the activation scripts