2023-09-08T12:02:54,625 Created temporary directory: /tmp/pip-build-tracker-dp_ohcz6
2023-09-08T12:02:54,626 Initialized build tracking at /tmp/pip-build-tracker-dp_ohcz6
2023-09-08T12:02:54,627 Created build tracker: /tmp/pip-build-tracker-dp_ohcz6
2023-09-08T12:02:54,627 Entered build tracker: /tmp/pip-build-tracker-dp_ohcz6
2023-09-08T12:02:54,628 Created temporary directory: /tmp/pip-wheel-hzall2c_
2023-09-08T12:02:54,631 Created temporary directory: /tmp/pip-ephem-wheel-cache-f0lam54w
2023-09-08T12:02:54,653 Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple
2023-09-08T12:02:54,657 2 location(s) to search for versions of metrique-client:
2023-09-08T12:02:54,657 * https://pypi.org/simple/metrique-client/
2023-09-08T12:02:54,657 * https://www.piwheels.org/simple/metrique-client/
2023-09-08T12:02:54,657 Fetching project page and analyzing links: https://pypi.org/simple/metrique-client/
2023-09-08T12:02:54,658 Getting page https://pypi.org/simple/metrique-client/
2023-09-08T12:02:54,660 Found index url https://pypi.org/simple/
2023-09-08T12:02:54,800 Fetched page https://pypi.org/simple/metrique-client/ as application/vnd.pypi.simple.v1+json
2023-09-08T12:02:54,806   Found link https://files.pythonhosted.org/packages/b8/2b/8ffe8d1d2dc77729490761474e9913c8abf0df84279149790484a0c98c3f/metrique-client-0.1.3-alpha.tar.gz (from https://pypi.org/simple/metrique-client/), version: 0.1.3-alpha
2023-09-08T12:02:54,807   Found link https://files.pythonhosted.org/packages/da/6f/9c62ad2428bbb32a190ceff3e9c51349df10a560e97b2a37c80eb1d40f62/metrique-client-0.1.3-alpha1.tar.gz (from https://pypi.org/simple/metrique-client/), version: 0.1.3-alpha1
2023-09-08T12:02:54,807   Found link https://files.pythonhosted.org/packages/4f/13/0f4aabdc33288461ddb09c5d906913936b283f56d40bd3737689f904691c/metrique-client-0.1.3-alpha2.tar.gz (from https://pypi.org/simple/metrique-client/), version: 0.1.3-alpha2
2023-09-08T12:02:54,808   Found link https://files.pythonhosted.org/packages/93/17/57ed4ac5640b9ac2fc60beb93b9383aed654c7d5b021dd8b47ecabd70732/metrique-client-0.1.3-alpha3.tar.gz (from https://pypi.org/simple/metrique-client/), version: 0.1.3-alpha3
2023-09-08T12:02:54,809   Found link https://files.pythonhosted.org/packages/27/bb/cffaff6254fbd074721c75fd7ab3fc127b637b4322fdab8a20952743cd7e/metrique-client-0.1.3-alpha4.tar.gz (from https://pypi.org/simple/metrique-client/), version: 0.1.3-alpha4
2023-09-08T12:02:54,809   Found link https://files.pythonhosted.org/packages/f9/65/510dc398be378796db27d0cff712b4dfa6a14ec3fad4c1b8cf8129857245/metrique-client-0.1.3-alpha5.tar.gz (from https://pypi.org/simple/metrique-client/), version: 0.1.3-alpha5
2023-09-08T12:02:54,810   Found link https://files.pythonhosted.org/packages/01/7a/72545b3b6d3a77afa5f4739ee149f3c4da40faf26586f21b0c2d6b91aebc/metrique-client-0.1.3-alpha6.tar.gz (from https://pypi.org/simple/metrique-client/), version: 0.1.3-alpha6
2023-09-08T12:02:54,811   Found link https://files.pythonhosted.org/packages/05/3d/08e2e6ade8a27c52fa55181f0a499d2b450b80de701c3a0ffe70d9f4dd21/metrique-client-0.1.3-alpha7.tar.gz (from https://pypi.org/simple/metrique-client/), version: 0.1.3-alpha7
2023-09-08T12:02:54,812   Found link https://files.pythonhosted.org/packages/1b/fa/c905cc863b5f3b1295b1e41ff97377f2a53c47856b8e7abca6fa092a2ef2/metrique-client-0.1.3-alpha8.tar.gz (from https://pypi.org/simple/metrique-client/), version: 0.1.3-alpha8
2023-09-08T12:02:54,812   Found link https://files.pythonhosted.org/packages/50/1c/ff7312d8ecf5bb2eb7c45b69f54e2fa209c87c5f97d3d7108df0571f71fe/metrique-client-0.1.3-alpha9.tar.gz (from https://pypi.org/simple/metrique-client/), version: 0.1.3-alpha9
2023-09-08T12:02:54,813   Found link https://files.pythonhosted.org/packages/05/d9/bab23a485681230d856b878802ff5c270061916ba2111e521dea224b940d/metrique-client-0.1.3-alpha10.tar.gz (from https://pypi.org/simple/metrique-client/), version: 0.1.3-alpha10
2023-09-08T12:02:54,814   Found link https://files.pythonhosted.org/packages/4d/a1/04a8345ac4745d05133c2eec968f5a8a45c887ecbca5e3e6a11abb367660/metrique-client-0.1.3-alpha11.tar.gz (from https://pypi.org/simple/metrique-client/), version: 0.1.3-alpha11
2023-09-08T12:02:54,814   Found link https://files.pythonhosted.org/packages/e7/fc/000273494c5443bd18c4b8a37a6dd6961d1ec2259abda26871a94539876a/metrique-client-0.1.3-alpha12.tar.gz (from https://pypi.org/simple/metrique-client/), version: 0.1.3-alpha12
2023-09-08T12:02:54,815   Found link https://files.pythonhosted.org/packages/3b/f4/5ebc1e18581489c902d1c6c1f4b303a72c38f7e528e3c0fa390c541c5afa/metrique-client-0.1.3-alpha13.tar.gz (from https://pypi.org/simple/metrique-client/), version: 0.1.3-alpha13
2023-09-08T12:02:54,816   Found link https://files.pythonhosted.org/packages/ba/e0/13e24d34630a766f2c67b7886ff3f6025a986c96b6fc60224d4dc0d5a7c5/metrique-client-0.1.3-alpha14.tar.gz (from https://pypi.org/simple/metrique-client/), version: 0.1.3-alpha14
2023-09-08T12:02:54,817   Found link https://files.pythonhosted.org/packages/6d/e4/63b72aecf726102584b38112d706d5c71506ab22bb39971910c17d5f1305/metrique-client-0.1.3-alpha15.tar.gz (from https://pypi.org/simple/metrique-client/), version: 0.1.3-alpha15
2023-09-08T12:02:54,817   Found link https://files.pythonhosted.org/packages/07/bc/2d79824d8f72a0377d0b737b4a491e65f6270b05cf1dc288393fd8beff6d/metrique-client-0.1.3-alpha16.tar.gz (from https://pypi.org/simple/metrique-client/), version: 0.1.3-alpha16
2023-09-08T12:02:54,818   Found link https://files.pythonhosted.org/packages/d2/20/31ef0a6a89a81bbb95e256a13622867b5ed4699f6ff5306058d75f5e6682/metrique-client-0.1.3-alpha17.tar.gz (from https://pypi.org/simple/metrique-client/), version: 0.1.3-alpha17
2023-09-08T12:02:54,818   Found link https://files.pythonhosted.org/packages/01/e8/a3adf59fcc7626909172cc683a06902bf9f9e071cf21d848443be191050c/metrique-client-0.1.3-alpha18.tar.gz (from https://pypi.org/simple/metrique-client/), version: 0.1.3-alpha18
2023-09-08T12:02:54,819   Found link https://files.pythonhosted.org/packages/d5/f9/a7a38413632a814cd1e4f192b8854655b58e2986a9a33baeefc952065424/metrique-client-0.1.3-alpha19.tar.gz (from https://pypi.org/simple/metrique-client/), version: 0.1.3-alpha19
2023-09-08T12:02:54,819   Found link https://files.pythonhosted.org/packages/1e/73/637e90e8464db071ecb5c6a10dbf44432349163ac63aa7444f57f9cc30e7/metrique-client-0.1.3-alpha20.tar.gz (from https://pypi.org/simple/metrique-client/), version: 0.1.3-alpha20
2023-09-08T12:02:54,820   Found link https://files.pythonhosted.org/packages/5d/cb/66b1cba9f6e0eb6c4e799fe687f8360934ce738fae012959101cb0227970/metrique-client-0.1.3-alpha21.tar.gz (from https://pypi.org/simple/metrique-client/), version: 0.1.3-alpha21
2023-09-08T12:02:54,821   Found link https://files.pythonhosted.org/packages/67/e1/9d5b3edf79cadae97cdff6454ff81aa77fac37b03b2d36b9d730af4f09e7/metrique-client-0.1.3-alpha22.tar.gz (from https://pypi.org/simple/metrique-client/), version: 0.1.3-alpha22
2023-09-08T12:02:54,821   Found link https://files.pythonhosted.org/packages/5c/c4/ccaad41198494075998dacbb07065f9f580f8ddd99a0f74530170841ea34/metrique-client-0.1.3-alpha23.tar.gz (from https://pypi.org/simple/metrique-client/), version: 0.1.3-alpha23
2023-09-08T12:02:54,822   Found link https://files.pythonhosted.org/packages/f0/d6/416c334379530b3fbd62384b26e19f570b9ea8622c81c696876615ccab6e/metrique-client-0.1.3-alpha24.tar.gz (from https://pypi.org/simple/metrique-client/), version: 0.1.3-alpha24
2023-09-08T12:02:54,823   Found link https://files.pythonhosted.org/packages/21/ec/bf17655c6ec03557263eaa7348ea55d68d39b56531b9391567d9c2900702/metrique-client-0.1.3-alpha27.tar.gz (from https://pypi.org/simple/metrique-client/), version: 0.1.3-alpha27
2023-09-08T12:02:54,824 Fetching project page and analyzing links: https://www.piwheels.org/simple/metrique-client/
2023-09-08T12:02:54,824 Getting page https://www.piwheels.org/simple/metrique-client/
2023-09-08T12:02:54,826 Found index url https://www.piwheels.org/simple/
2023-09-08T12:02:55,509 Fetched page https://www.piwheels.org/simple/metrique-client/ as text/html
2023-09-08T12:02:55,512   Skipping link: No binaries permitted for metrique-client: https://www.piwheels.org/simple/metrique-client/metrique_client-0.1.3a27-py3-none-any.whl#sha256=acf3eb3c14c0304c5a33ad6c632d8a8248f7333ec7d22c4a0628e6db029d882e (from https://www.piwheels.org/simple/metrique-client/)
2023-09-08T12:02:55,514 Skipping link: not a file: https://www.piwheels.org/simple/metrique-client/
2023-09-08T12:02:55,515 Skipping link: not a file: https://pypi.org/simple/metrique-client/
2023-09-08T12:02:55,564 Given no hashes to check 1 links for project 'metrique-client': discarding no candidates
2023-09-08T12:02:55,593 Collecting metrique-client==0.1.3-alpha12
2023-09-08T12:02:55,596   Created temporary directory: /tmp/pip-unpack-uoxb48jr
2023-09-08T12:02:56,152   Downloading metrique-client-0.1.3-alpha12.tar.gz (19 kB)
2023-09-08T12:02:56,192   Added metrique-client==0.1.3-alpha12 from https://files.pythonhosted.org/packages/e7/fc/000273494c5443bd18c4b8a37a6dd6961d1ec2259abda26871a94539876a/metrique-client-0.1.3-alpha12.tar.gz to build tracker '/tmp/pip-build-tracker-dp_ohcz6'
2023-09-08T12:02:56,194   Running setup.py (path:/tmp/pip-wheel-hzall2c_/metrique-client_05de90e58b1b486597604760bad37b4e/setup.py) egg_info for package metrique-client
2023-09-08T12:02:56,195   Created temporary directory: /tmp/pip-pip-egg-info-wqcssmb1
2023-09-08T12:02:56,195   Preparing metadata (setup.py): started
2023-09-08T12:02:56,196   Running command python setup.py egg_info
2023-09-08T12:02:56,662   Traceback (most recent call last):
2023-09-08T12:02:56,662     File "<string>", line 2, in <module>
2023-09-08T12:02:56,662     File "<pip-setuptools-caller>", line 34, in <module>
2023-09-08T12:02:56,663     File "/tmp/pip-wheel-hzall2c_/metrique-client_05de90e58b1b486597604760bad37b4e/setup.py", line 13, in <module>
2023-09-08T12:02:56,664       import metrique.server as mclient
2023-09-08T12:02:56,665   ModuleNotFoundError: No module named 'metrique.server'
2023-09-08T12:02:56,734   ERROR: [present-rich] python setup.py egg_info exited with 1
2023-09-08T12:02:56,747   [bold magenta]full command[/]: [blue]/usr/bin/python3 -c '
2023-09-08T12:02:56,747   exec(compile('"'"''"'"''"'"'
2023-09-08T12:02:56,747   # This is <pip-setuptools-caller> -- a caller that pip uses to run setup.py
2023-09-08T12:02:56,747   #
2023-09-08T12:02:56,747   # - It imports setuptools before invoking setup.py, to enable projects that directly
2023-09-08T12:02:56,747   #   import from `distutils.core` to work with newer packaging standards.
2023-09-08T12:02:56,747   # - It provides a clear error message when setuptools is not installed.
2023-09-08T12:02:56,747   # - It sets `sys.argv[0]` to the underlying `setup.py`, when invoking `setup.py` so
2023-09-08T12:02:56,747   #   setuptools doesn'"'"'t think the script is `-c`. This avoids the following warning:
2023-09-08T12:02:56,747   #     manifest_maker: standard file '"'"'-c'"'"' not found".
2023-09-08T12:02:56,747   # - It generates a shim setup.py, for handling setup.cfg-only projects.
2023-09-08T12:02:56,747   import os, sys, tokenize
2023-09-08T12:02:56,747   
2023-09-08T12:02:56,747   try:
2023-09-08T12:02:56,747       import setuptools
2023-09-08T12:02:56,747   except ImportError as error:
2023-09-08T12:02:56,747       print(
2023-09-08T12:02:56,747           "ERROR: Can not execute `setup.py` since setuptools is not available in "
2023-09-08T12:02:56,747           "the build environment.",
2023-09-08T12:02:56,747           file=sys.stderr,
2023-09-08T12:02:56,747       )
2023-09-08T12:02:56,747       sys.exit(1)
2023-09-08T12:02:56,747   
2023-09-08T12:02:56,747   __file__ = %r
2023-09-08T12:02:56,747   sys.argv[0] = __file__
2023-09-08T12:02:56,747   
2023-09-08T12:02:56,747   if os.path.exists(__file__):
2023-09-08T12:02:56,747       filename = __file__
2023-09-08T12:02:56,747       with tokenize.open(__file__) as f:
2023-09-08T12:02:56,747           setup_py_code = f.read()
2023-09-08T12:02:56,747   else:
2023-09-08T12:02:56,747       filename = "<auto-generated setuptools caller>"
2023-09-08T12:02:56,747       setup_py_code = "from setuptools import setup; setup()"
2023-09-08T12:02:56,747   
2023-09-08T12:02:56,747   exec(compile(setup_py_code, filename, "exec"))
2023-09-08T12:02:56,747   '"'"''"'"''"'"' % ('"'"'/tmp/pip-wheel-hzall2c_/metrique-client_05de90e58b1b486597604760bad37b4e/setup.py'"'"',), "<pip-setuptools-caller>", "exec"))' egg_info --egg-base /tmp/pip-pip-egg-info-wqcssmb1[/]
2023-09-08T12:02:56,747   [bold magenta]cwd[/]: /tmp/pip-wheel-hzall2c_/metrique-client_05de90e58b1b486597604760bad37b4e/
2023-09-08T12:02:56,748   Preparing metadata (setup.py): finished with status 'error'
2023-09-08T12:02:56,750 ERROR: [present-rich] metadata generation failed
2023-09-08T12:02:56,755 Exception information:
2023-09-08T12:02:56,755 Traceback (most recent call last):
2023-09-08T12:02:56,755   File "/usr/local/lib/python3.11/dist-packages/pip/_internal/operations/build/metadata_legacy.py", line 64, in generate_metadata
2023-09-08T12:02:56,755     call_subprocess(
2023-09-08T12:02:56,755   File "/usr/local/lib/python3.11/dist-packages/pip/_internal/utils/subprocess.py", line 224, in call_subprocess
2023-09-08T12:02:56,755     raise error
2023-09-08T12:02:56,755 pip._internal.exceptions.InstallationSubprocessError: python setup.py egg_info exited with 1
2023-09-08T12:02:56,755 
2023-09-08T12:02:56,755 The above exception was the direct cause of the following exception:
2023-09-08T12:02:56,755 
2023-09-08T12:02:56,755 Traceback (most recent call last):
2023-09-08T12:02:56,755   File "/usr/local/lib/python3.11/dist-packages/pip/_internal/cli/base_command.py", line 180, in exc_logging_wrapper
2023-09-08T12:02:56,755     status = run_func(*args)
2023-09-08T12:02:56,755              ^^^^^^^^^^^^^^^
2023-09-08T12:02:56,755   File "/usr/local/lib/python3.11/dist-packages/pip/_internal/cli/req_command.py", line 248, in wrapper
2023-09-08T12:02:56,755     return func(self, options, args)
2023-09-08T12:02:56,755            ^^^^^^^^^^^^^^^^^^^^^^^^^
2023-09-08T12:02:56,755   File "/usr/local/lib/python3.11/dist-packages/pip/_internal/commands/wheel.py", line 147, in run
2023-09-08T12:02:56,755     requirement_set = resolver.resolve(reqs, check_supported_wheels=True)
2023-09-08T12:02:56,755                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2023-09-08T12:02:56,755   File "/usr/local/lib/python3.11/dist-packages/pip/_internal/resolution/resolvelib/resolver.py", line 92, in resolve
2023-09-08T12:02:56,755     result = self._result = resolver.resolve(
2023-09-08T12:02:56,755                             ^^^^^^^^^^^^^^^^^
2023-09-08T12:02:56,755   File "/usr/local/lib/python3.11/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 546, in resolve
2023-09-08T12:02:56,755     state = resolution.resolve(requirements, max_rounds=max_rounds)
2023-09-08T12:02:56,755             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2023-09-08T12:02:56,755   File "/usr/local/lib/python3.11/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 397, in resolve
2023-09-08T12:02:56,755     self._add_to_criteria(self.state.criteria, r, parent=None)
2023-09-08T12:02:56,755   File "/usr/local/lib/python3.11/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 173, in _add_to_criteria
2023-09-08T12:02:56,755     if not criterion.candidates:
2023-09-08T12:02:56,755   File "/usr/local/lib/python3.11/dist-packages/pip/_vendor/resolvelib/structs.py", line 156, in __bool__
2023-09-08T12:02:56,755     return bool(self._sequence)
2023-09-08T12:02:56,755            ^^^^^^^^^^^^^^^^^^^^
2023-09-08T12:02:56,755   File "/usr/local/lib/python3.11/dist-packages/pip/_internal/resolution/resolvelib/found_candidates.py", line 155, in __bool__
2023-09-08T12:02:56,755     return any(self)
2023-09-08T12:02:56,755            ^^^^^^^^^
2023-09-08T12:02:56,755   File "/usr/local/lib/python3.11/dist-packages/pip/_internal/resolution/resolvelib/found_candidates.py", line 143, in <genexpr>
2023-09-08T12:02:56,755     return (c for c in iterator if id(c) not in self._incompatible_ids)
2023-09-08T12:02:56,755            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2023-09-08T12:02:56,755   File "/usr/local/lib/python3.11/dist-packages/pip/_internal/resolution/resolvelib/found_candidates.py", line 47, in _iter_built
2023-09-08T12:02:56,755     candidate = func()
2023-09-08T12:02:56,755                 ^^^^^^
2023-09-08T12:02:56,755   File "/usr/local/lib/python3.11/dist-packages/pip/_internal/resolution/resolvelib/factory.py", line 206, in _make_candidate_from_link
2023-09-08T12:02:56,755     self._link_candidate_cache[link] = LinkCandidate(
2023-09-08T12:02:56,755                                        ^^^^^^^^^^^^^^
2023-09-08T12:02:56,755   File "/usr/local/lib/python3.11/dist-packages/pip/_internal/resolution/resolvelib/candidates.py", line 293, in __init__
2023-09-08T12:02:56,755     super().__init__(
2023-09-08T12:02:56,755   File "/usr/local/lib/python3.11/dist-packages/pip/_internal/resolution/resolvelib/candidates.py", line 156, in __init__
2023-09-08T12:02:56,755     self.dist = self._prepare()
2023-09-08T12:02:56,755                 ^^^^^^^^^^^^^^^
2023-09-08T12:02:56,755   File "/usr/local/lib/python3.11/dist-packages/pip/_internal/resolution/resolvelib/candidates.py", line 225, in _prepare
2023-09-08T12:02:56,755     dist = self._prepare_distribution()
2023-09-08T12:02:56,755            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2023-09-08T12:02:56,755   File "/usr/local/lib/python3.11/dist-packages/pip/_internal/resolution/resolvelib/candidates.py", line 304, in _prepare_distribution
2023-09-08T12:02:56,755     return preparer.prepare_linked_requirement(self._ireq, parallel_builds=True)
2023-09-08T12:02:56,755            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2023-09-08T12:02:56,755   File "/usr/local/lib/python3.11/dist-packages/pip/_internal/operations/prepare.py", line 538, in prepare_linked_requirement
2023-09-08T12:02:56,755     return self._prepare_linked_requirement(req, parallel_builds)
2023-09-08T12:02:56,755            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2023-09-08T12:02:56,755   File "/usr/local/lib/python3.11/dist-packages/pip/_internal/operations/prepare.py", line 653, in _prepare_linked_requirement
2023-09-08T12:02:56,755     dist = _get_prepared_distribution(
2023-09-08T12:02:56,755            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
2023-09-08T12:02:56,755   File "/usr/local/lib/python3.11/dist-packages/pip/_internal/operations/prepare.py", line 69, in _get_prepared_distribution
2023-09-08T12:02:56,755     abstract_dist.prepare_distribution_metadata(
2023-09-08T12:02:56,755   File "/usr/local/lib/python3.11/dist-packages/pip/_internal/distributions/sdist.py", line 61, in prepare_distribution_metadata
2023-09-08T12:02:56,755     self.req.prepare_metadata()
2023-09-08T12:02:56,755   File "/usr/local/lib/python3.11/dist-packages/pip/_internal/req/req_install.py", line 568, in prepare_metadata
2023-09-08T12:02:56,755     self.metadata_directory = generate_metadata_legacy(
2023-09-08T12:02:56,755                               ^^^^^^^^^^^^^^^^^^^^^^^^^
2023-09-08T12:02:56,755   File "/usr/local/lib/python3.11/dist-packages/pip/_internal/operations/build/metadata_legacy.py", line 71, in generate_metadata
2023-09-08T12:02:56,755     raise MetadataGenerationFailed(package_details=details) from error
2023-09-08T12:02:56,755 pip._internal.exceptions.MetadataGenerationFailed: metadata generation failed
2023-09-08T12:02:56,768 Removed metrique-client==0.1.3-alpha12 from https://files.pythonhosted.org/packages/e7/fc/000273494c5443bd18c4b8a37a6dd6961d1ec2259abda26871a94539876a/metrique-client-0.1.3-alpha12.tar.gz from build tracker '/tmp/pip-build-tracker-dp_ohcz6'
2023-09-08T12:02:56,769 Removed build tracker: '/tmp/pip-build-tracker-dp_ohcz6'