2026-06-08T13:46:55,455 Created temporary directory: /tmp/pip-ephem-wheel-cache-v4y_b346
2026-06-08T13:46:55,457 Created temporary directory: /tmp/pip-build-tracker-dl3lbsih
2026-06-08T13:46:55,457 Initialized build tracking at /tmp/pip-build-tracker-dl3lbsih
2026-06-08T13:46:55,458 Created build tracker: /tmp/pip-build-tracker-dl3lbsih
2026-06-08T13:46:55,458 Entered build tracker: /tmp/pip-build-tracker-dl3lbsih
2026-06-08T13:46:55,459 Created temporary directory: /tmp/pip-wheel-5rnveepu
2026-06-08T13:46:55,462 DEPRECATION: --no-binary currently disables reading from the cache of locally built wheels. In the future --no-binary will not influence the wheel cache. pip 23.1 will enforce this behaviour change. A possible replacement is to use the --no-cache-dir option. You can use the flag --use-feature=no-binary-enable-wheel-cache to test the upcoming behaviour. Discussion can be found at https://github.com/pypa/pip/issues/11453
2026-06-08T13:46:55,464 Created temporary directory: /tmp/pip-ephem-wheel-cache-xp3rxxi8
2026-06-08T13:46:55,487 Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple
2026-06-08T13:46:55,491 2 location(s) to search for versions of mcf:
2026-06-08T13:46:55,491 * https://pypi.org/simple/mcf/
2026-06-08T13:46:55,491 * https://www.piwheels.org/simple/mcf/
2026-06-08T13:46:55,492 Fetching project page and analyzing links: https://pypi.org/simple/mcf/
2026-06-08T13:46:55,492 Getting page https://pypi.org/simple/mcf/
2026-06-08T13:46:55,494 Found index url https://pypi.org/simple
2026-06-08T13:46:55,646 Fetched page https://pypi.org/simple/mcf/ as application/vnd.pypi.simple.v1+json
2026-06-08T13:46:55,652   Found link https://files.pythonhosted.org/packages/a7/3c/f4ef0b0bcc4830e137c45c3aa7154ccaa8384b68b5b5ae52045c6f2cc059/mcf-0.0.0.tar.gz (from https://pypi.org/simple/mcf/), version: 0.0.0
2026-06-08T13:46:55,653   Found link https://files.pythonhosted.org/packages/50/a8/bf64bdc56505bed93cf12f03c0c7dfe07dcb95ba9fe4f5c7c8254fc70b5a/mcf-0.0.1.tar.gz (from https://pypi.org/simple/mcf/), version: 0.0.1
2026-06-08T13:46:55,654   Found link https://files.pythonhosted.org/packages/ea/d8/0547a82db5b27e364ee21078ae262b8764d9f4c22463ecbe67ed6932917b/mcf-0.1.0.tar.gz (from https://pypi.org/simple/mcf/), version: 0.1.0
2026-06-08T13:46:55,654   Found link https://files.pythonhosted.org/packages/69/68/e2dac82964e369ae43c5fc442366fc8b35de711bc4ca0b4320b65fdf0d2b/mcf-0.1.1.tar.gz (from https://pypi.org/simple/mcf/), version: 0.1.1
2026-06-08T13:46:55,655   Found link https://files.pythonhosted.org/packages/41/d8/71b28859541822ebb5e34d0ab84cfc6f78a57cd5f4c37c8b10fb87751e57/mcf-0.1.2.tar.gz (from https://pypi.org/simple/mcf/), version: 0.1.2
2026-06-08T13:46:55,656   Found link https://files.pythonhosted.org/packages/c2/88/e7f6dafc10bf6eff7657a9f061c6543b473c463d2ff308b759377bf6ca3b/mcf-0.1.3.tar.gz (from https://pypi.org/simple/mcf/), version: 0.1.3
2026-06-08T13:46:55,657   Found link https://files.pythonhosted.org/packages/c6/fb/9c4a3fa5d7aa2292aa9579925d160116a653ed91cd76b8f5d7e3091f0cf6/mcf-0.1.4.tar.gz (from https://pypi.org/simple/mcf/), version: 0.1.4
2026-06-08T13:46:55,657   Found link https://files.pythonhosted.org/packages/2d/2e/ee452d445ae0593448e50afc3b97029cc9401fb74d0d02943d30c22996e8/mcf-0.2.0.tar.gz (from https://pypi.org/simple/mcf/), version: 0.2.0
2026-06-08T13:46:55,658   Found link https://files.pythonhosted.org/packages/8c/ee/0d9cdda6db8eab291589223d77136a424e34a0e53a9e799cb5f9bdbe2f1e/mcf-0.2.1.tar.gz (from https://pypi.org/simple/mcf/), version: 0.2.1
2026-06-08T13:46:55,659   Found link https://files.pythonhosted.org/packages/02/d7/4cd775664661ce8c1f9bd9cfd3c21a2bd531ca13a1b3925af5c715c8612d/mcf-0.2.3.tar.gz (from https://pypi.org/simple/mcf/), version: 0.2.3
2026-06-08T13:46:55,659   Found link https://files.pythonhosted.org/packages/9a/bc/f18b046d71f47f631f93f8b96031c1dd111b5586a099eca18a885fd9b24b/mcf-0.2.4.tar.gz (from https://pypi.org/simple/mcf/), version: 0.2.4
2026-06-08T13:46:55,660   Found link https://files.pythonhosted.org/packages/1e/04/aa7afc7d9b6275797502b95651d9eb9bcc86d6a1f93dc80182a5c72bd482/mcf-0.2.5.tar.gz (from https://pypi.org/simple/mcf/), version: 0.2.5
2026-06-08T13:46:55,661   Found link https://files.pythonhosted.org/packages/ba/cb/15cbf35ca5e530336899ec6efbc297eafa7ca352329e36c144a13218416c/mcf-0.2.6.tar.gz (from https://pypi.org/simple/mcf/), version: 0.2.6
2026-06-08T13:46:55,662   Found link https://files.pythonhosted.org/packages/c2/3e/4767cc44974eb6e92ee33e0f21a9ec1de1987279d23d208044f33edb7340/mcf-0.3.0.tar.gz (from https://pypi.org/simple/mcf/), version: 0.3.0
2026-06-08T13:46:55,663   Found link https://files.pythonhosted.org/packages/7c/36/ee531923166a85245e354c435fa0d51403452104ce87d35d25b6921a3e54/mcf-0.3.1.tar.gz (from https://pypi.org/simple/mcf/), version: 0.3.1
2026-06-08T13:46:55,663   Found link https://files.pythonhosted.org/packages/03/58/72a85c8ea4f1ac3923849f2e156dedc434e6e08e60d9debbd020ec69fb2e/mcf-0.3.2.tar.gz (from https://pypi.org/simple/mcf/), version: 0.3.2
2026-06-08T13:46:55,664   Found link https://files.pythonhosted.org/packages/59/e7/be02c678ef0b37e4ae36dbd1d719b4670ad89788b78642a65f2752dbeb01/mcf-0.3.3.tar.gz (from https://pypi.org/simple/mcf/), version: 0.3.3
2026-06-08T13:46:55,664   Found link https://files.pythonhosted.org/packages/b9/c7/72030f81a509e8c65d83fadbd74ede219344a586c6d3a4c08644799318e2/mcf-0.4.0.tar.gz (from https://pypi.org/simple/mcf/), version: 0.4.0
2026-06-08T13:46:55,665   Found link https://files.pythonhosted.org/packages/56/b1/1f627dbff58f0f5bf2a41628558678ad6f6a6656711467ac4435d7cfff5b/mcf-0.4.1.tar.gz (from https://pypi.org/simple/mcf/), version: 0.4.1
2026-06-08T13:46:55,665   Found link https://files.pythonhosted.org/packages/a7/3b/c1d0125193624c60430c0d0a6061d20226bf959161ebdf5c68d311a104a3/mcf-0.4.1.1.tar.gz (from https://pypi.org/simple/mcf/), version: 0.4.1.1
2026-06-08T13:46:55,666   Found link https://files.pythonhosted.org/packages/a9/68/1e64f3568e4a221a1c496081faaeb2c2cb69adfb5ab601e45e26165a6980/mcf-0.4.2.tar.gz (from https://pypi.org/simple/mcf/), version: 0.4.2
2026-06-08T13:46:55,667   Found link https://files.pythonhosted.org/packages/a1/2d/bab8c28d1a0cef14c06c2e725a97731d2f022212953479ac21936fcfbebc/mcf-0.4.3.tar.gz (from https://pypi.org/simple/mcf/), version: 0.4.3
2026-06-08T13:46:55,667   Found link https://files.pythonhosted.org/packages/8e/02/759545574be2628c32eff4631cd04487138d0980a883cd1dfbe90953ae01/mcf-0.5.0.tar.gz (from https://pypi.org/simple/mcf/), version: 0.5.0
2026-06-08T13:46:55,668   Found link https://files.pythonhosted.org/packages/55/5c/38423c70b3643569b69f6ba4afee5c725f885c0495cc0d86143967a1a5a8/mcf-0.5.1.tar.gz (from https://pypi.org/simple/mcf/), version: 0.5.1
2026-06-08T13:46:55,669   Found link https://files.pythonhosted.org/packages/e7/66/d553f32b653ca0bf4e5e8ee1ed7dc5edc3158ae78a586b241d6265a2436b/mcf-0.6.0.tar.gz (from https://pypi.org/simple/mcf/), version: 0.6.0
2026-06-08T13:46:55,669   Found link https://files.pythonhosted.org/packages/9a/bf/2deff7fa6bcbbfabf75fce3c248cf7736cd3a3a344d3f567aa6d3794f80a/mcf-0.7.0.tar.gz (from https://pypi.org/simple/mcf/), version: 0.7.0
2026-06-08T13:46:55,670   Found link https://files.pythonhosted.org/packages/83/40/24b3409dfb2f8e7eacf17e4fbb4bdb54600a9983821d1c2344ffa290121c/mcf-0.7.1.tar.gz (from https://pypi.org/simple/mcf/), version: 0.7.1
2026-06-08T13:46:55,671   Found link https://files.pythonhosted.org/packages/a7/4b/490f5902e8f628fc950e24aac7d514532313ed3cdc5f2429e275e0687552/mcf-0.7.2.tar.gz (from https://pypi.org/simple/mcf/), version: 0.7.2
2026-06-08T13:46:55,671   Found link https://files.pythonhosted.org/packages/68/48/f6f9fd118ddc3543a85b0cd6f5cb92d643c6bce6bb46f6b9be9e7a6fdec9/mcf-0.8.0.tar.gz (from https://pypi.org/simple/mcf/), version: 0.8.0
2026-06-08T13:46:55,672   Found link https://files.pythonhosted.org/packages/d0/a5/aaaffab886c60b563c9786ba1cd955c7bc9f24c7fd903eecda90d4b53e16/mcf-0.9.0.tar.gz (from https://pypi.org/simple/mcf/), version: 0.9.0
2026-06-08T13:46:55,673   Link requires a different Python (3.11.2 not in: '<3.14,>=3.12'): https://files.pythonhosted.org/packages/ce/03/9c83b4630479b9dfa76a50f47015a2998abeefe088834b7724e102b4a7bb/mcf-0.10.0.tar.gz (from https://pypi.org/simple/mcf/) (requires-python:<3.14,>=3.12)
2026-06-08T13:46:55,674   Skipping link: 0.10.0 Requires-Python <3.14,>=3.12: https://files.pythonhosted.org/packages/ce/03/9c83b4630479b9dfa76a50f47015a2998abeefe088834b7724e102b4a7bb/mcf-0.10.0.tar.gz (from https://pypi.org/simple/mcf/) (requires-python:<3.14,>=3.12)
2026-06-08T13:46:55,675 Fetching project page and analyzing links: https://www.piwheels.org/simple/mcf/
2026-06-08T13:46:55,675 Getting page https://www.piwheels.org/simple/mcf/
2026-06-08T13:46:55,676 Found index url https://www.piwheels.org/simple
2026-06-08T13:46:55,849 Fetched page https://www.piwheels.org/simple/mcf/ as text/html
2026-06-08T13:46:55,858   Skipping link: No binaries permitted for mcf: https://archive1.piwheels.org/simple/mcf/mcf-0.9.0-py3-none-any.whl#sha256=f238cd25d9c0a18d0270fccadf40b3d6e33b5cccc6c949654d65a21358059623 (from https://www.piwheels.org/simple/mcf/)
2026-06-08T13:46:55,859   Skipping link: No binaries permitted for mcf: https://archive1.piwheels.org/simple/mcf/mcf-0.8.0-py3-none-any.whl#sha256=f690782b6a44ed80f2dff5a251ff91976ee2d09a34d13709d64699b106a411f6 (from https://www.piwheels.org/simple/mcf/)
2026-06-08T13:46:55,859   Skipping link: No binaries permitted for mcf: https://archive1.piwheels.org/simple/mcf/mcf-0.7.2-py3-none-any.whl#sha256=8c441294d62100838dd1eb256c951f4fc3bddc4103dcd498c80d031668d8118b (from https://www.piwheels.org/simple/mcf/)
2026-06-08T13:46:55,859   Skipping link: No binaries permitted for mcf: https://archive1.piwheels.org/simple/mcf/mcf-0.7.1-py3-none-any.whl#sha256=1b9ec42afbb0a1ff89a387d708b62d212724f1230fb4086e15aaae1727803c64 (from https://www.piwheels.org/simple/mcf/)
2026-06-08T13:46:55,860   Skipping link: No binaries permitted for mcf: https://archive1.piwheels.org/simple/mcf/mcf-0.7.0-py3-none-any.whl#sha256=8153e452f1a6f67251b212233435f8885fe1c42eede11b70294f4b672e7d1a58 (from https://www.piwheels.org/simple/mcf/)
2026-06-08T13:46:55,860   Skipping link: No binaries permitted for mcf: https://archive1.piwheels.org/simple/mcf/mcf-0.6.0-py3-none-any.whl#sha256=e1a331186d236571a167647cd9b43aa2280579baaac734b5cb6424d1a0e2bed5 (from https://www.piwheels.org/simple/mcf/)
2026-06-08T13:46:55,861   Skipping link: No binaries permitted for mcf: https://archive1.piwheels.org/simple/mcf/mcf-0.5.1-py3-none-any.whl#sha256=8027e1f5363a0431c39561f66400a253c408e902232a7171d97481fb910d5161 (from https://www.piwheels.org/simple/mcf/)
2026-06-08T13:46:55,862   Skipping link: No binaries permitted for mcf: https://archive1.piwheels.org/simple/mcf/mcf-0.5.0-py3-none-any.whl#sha256=5a794155191e7b631b8acbbf52d12d8dbf4dfc98ac1f66b4056dc1b37310d12a (from https://www.piwheels.org/simple/mcf/)
2026-06-08T13:46:55,862   Skipping link: No binaries permitted for mcf: https://archive1.piwheels.org/simple/mcf/mcf-0.4.3-py3-none-any.whl#sha256=55802f6b9c2a5169abc4fd284a5885aa6ce60e4733857616da249d478469dc35 (from https://www.piwheels.org/simple/mcf/)
2026-06-08T13:46:55,863   Skipping link: No binaries permitted for mcf: https://archive1.piwheels.org/simple/mcf/mcf-0.4.2-py3-none-any.whl#sha256=5f2aa92ef910027220c9c59ba78905745b4bd0af2a27b8c77b05e9667840d4ca (from https://www.piwheels.org/simple/mcf/)
2026-06-08T13:46:55,863   Skipping link: No binaries permitted for mcf: https://archive1.piwheels.org/simple/mcf/mcf-0.4.1.1-py3-none-any.whl#sha256=cfce056e96f5af4e40c28cadc241d0eb6242339ee43f58dc5a55543e077f6a1c (from https://www.piwheels.org/simple/mcf/)
2026-06-08T13:46:55,864   Skipping link: No binaries permitted for mcf: https://archive1.piwheels.org/simple/mcf/mcf-0.4.1-py3-none-any.whl#sha256=d2219fe4a156647af04b7fadbdb98031afc6807f29e3df82185d423953264034 (from https://www.piwheels.org/simple/mcf/)
2026-06-08T13:46:55,865   Skipping link: No binaries permitted for mcf: https://archive1.piwheels.org/simple/mcf/mcf-0.4.0-py3-none-any.whl#sha256=74b007ed8961dcd6c5d476853872744225ad29ace3ab6e9f1e0c549e8278a769 (from https://www.piwheels.org/simple/mcf/)
2026-06-08T13:46:55,865   Skipping link: No binaries permitted for mcf: https://archive1.piwheels.org/simple/mcf/mcf-0.3.3-py3-none-any.whl#sha256=5d241221caca03f295a6d0c5198fdb6a375c8a6caaa6848b35b91f050d1b5128 (from https://www.piwheels.org/simple/mcf/)
2026-06-08T13:46:55,866   Skipping link: No binaries permitted for mcf: https://archive1.piwheels.org/simple/mcf/mcf-0.3.2-py3-none-any.whl#sha256=cd60e46408cae2a98dffe91e01cab742642d53ac2d3a29f4c490946a66e14b73 (from https://www.piwheels.org/simple/mcf/)
2026-06-08T13:46:55,866   Skipping link: No binaries permitted for mcf: https://archive1.piwheels.org/simple/mcf/mcf-0.3.1-py3-none-any.whl#sha256=61ef72b668f1ea56c988c809a8f8ddb3183cd0ef2b947e5db28340951afe7425 (from https://www.piwheels.org/simple/mcf/)
2026-06-08T13:46:55,867   Skipping link: No binaries permitted for mcf: https://archive1.piwheels.org/simple/mcf/mcf-0.3.0-py3-none-any.whl#sha256=d854bda0231be502d3280ad42f9d9e3bc0c9db4a2ef34d8395d6ff7428627920 (from https://www.piwheels.org/simple/mcf/)
2026-06-08T13:46:55,867   Skipping link: No binaries permitted for mcf: https://archive1.piwheels.org/simple/mcf/mcf-0.2.6-py3-none-any.whl#sha256=5e3dfa66683d6435b0d2b16d3c496e015c2b9bf61633defed9e0f6814768c9d5 (from https://www.piwheels.org/simple/mcf/)
2026-06-08T13:46:55,868   Skipping link: No binaries permitted for mcf: https://archive1.piwheels.org/simple/mcf/mcf-0.2.5-py3-none-any.whl#sha256=26fedbbba56c9470b1f4d1e9fcc2eb9ca542e44a60f008d8216400f70b575607 (from https://www.piwheels.org/simple/mcf/)
2026-06-08T13:46:55,868   Skipping link: No binaries permitted for mcf: https://archive1.piwheels.org/simple/mcf/mcf-0.2.4-py3-none-any.whl#sha256=5dfb2fe5c812d7a01a7186fb4e773a4a94320747811f77b3dc23ded970bdcd3a (from https://www.piwheels.org/simple/mcf/)
2026-06-08T13:46:55,869   Skipping link: No binaries permitted for mcf: https://archive1.piwheels.org/simple/mcf/mcf-0.2.3-py3-none-any.whl#sha256=ee2ddcc0b86b03dcef4b65aec987e5c18cd1141559962df19c27776d507962c1 (from https://www.piwheels.org/simple/mcf/)
2026-06-08T13:46:55,869   Skipping link: No binaries permitted for mcf: https://archive1.piwheels.org/simple/mcf/mcf-0.2.1-py3-none-any.whl#sha256=83d33d35562656f54d67453f42b84044f04871c873d63ddde7d29cfb0ae65e4c (from https://www.piwheels.org/simple/mcf/)
2026-06-08T13:46:55,870   Skipping link: No binaries permitted for mcf: https://archive1.piwheels.org/simple/mcf/mcf-0.2.0-py3-none-any.whl#sha256=3a85bdcbb68e79cec464c9988e2f962e15a0770c1926310607c1f333f79ce480 (from https://www.piwheels.org/simple/mcf/)
2026-06-08T13:46:55,870   Skipping link: No binaries permitted for mcf: https://archive1.piwheels.org/simple/mcf/mcf-0.1.4-py3-none-any.whl#sha256=2aa38c771346b75e0560afd5346e76d7bb99ce9537755958453debc870813eaf (from https://www.piwheels.org/simple/mcf/)
2026-06-08T13:46:55,871   Skipping link: No binaries permitted for mcf: https://archive1.piwheels.org/simple/mcf/mcf-0.1.3-py3-none-any.whl#sha256=68a982af1a30c021e1ffb3ad45b3714d038b05fb22f8c16d1adb3bb499bcf227 (from https://www.piwheels.org/simple/mcf/)
2026-06-08T13:46:55,872   Skipping link: No binaries permitted for mcf: https://archive1.piwheels.org/simple/mcf/mcf-0.1.2-py3-none-any.whl#sha256=a7d683f4ed9e84aae64ddc3a66cb91917995f73220ace12588fbcc7a9c759649 (from https://www.piwheels.org/simple/mcf/)
2026-06-08T13:46:55,872   Skipping link: No binaries permitted for mcf: https://archive1.piwheels.org/simple/mcf/mcf-0.1.1-py3-none-any.whl#sha256=be0479d6e03bdb2ade68e8636c9814b2ddc41befdeff6725aa635701b65b0cff (from https://www.piwheels.org/simple/mcf/)
2026-06-08T13:46:55,873   Skipping link: No binaries permitted for mcf: https://archive1.piwheels.org/simple/mcf/mcf-0.1.0-py3-none-any.whl#sha256=3d6283f5684691cec00bcda3b37848618681c8048c6404c723e1ec72f26431e3 (from https://www.piwheels.org/simple/mcf/)
2026-06-08T13:46:55,873   Skipping link: No binaries permitted for mcf: https://archive1.piwheels.org/simple/mcf/mcf-0.0.1-py3-none-any.whl#sha256=c6bf0511a47fac9c4d893cc817b020facfff20dfdf62cfb8637372196445db2a (from https://www.piwheels.org/simple/mcf/)
2026-06-08T13:46:55,874   Skipping link: No binaries permitted for mcf: https://archive1.piwheels.org/simple/mcf/mcf-0.0.0-py3-none-any.whl#sha256=5da3271f851274628e8c131349da72112eff095a9423798ba0c3f20ee3673ef8 (from https://www.piwheels.org/simple/mcf/)
2026-06-08T13:46:55,875 Skipping link: not a file: https://www.piwheels.org/simple/mcf/
2026-06-08T13:46:55,876 Skipping link: not a file: https://pypi.org/simple/mcf/
2026-06-08T13:46:55,898 Given no hashes to check 0 links for project 'mcf': discarding no candidates
2026-06-08T13:46:55,899 ERROR: Ignored the following versions that require a different python version: 0.10.0 Requires-Python <3.14,>=3.12
2026-06-08T13:46:55,900 ERROR: Could not find a version that satisfies the requirement mcf==0.10.0 (from versions: 0.0.0, 0.0.1, 0.1.0, 0.1.1, 0.1.2, 0.1.3, 0.1.4, 0.2.0, 0.2.1, 0.2.3, 0.2.4, 0.2.5, 0.2.6, 0.3.0, 0.3.1, 0.3.2, 0.3.3, 0.4.0, 0.4.1, 0.4.1.1, 0.4.2, 0.4.3, 0.5.0, 0.5.1, 0.6.0, 0.7.0, 0.7.1, 0.7.2, 0.8.0, 0.9.0)
2026-06-08T13:46:55,902 ERROR: No matching distribution found for mcf==0.10.0
2026-06-08T13:46:55,903 Exception information:
2026-06-08T13:46:55,903 Traceback (most recent call last):
2026-06-08T13:46:55,903   File "/usr/lib/python3/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 348, in resolve
2026-06-08T13:46:55,903     self._add_to_criteria(self.state.criteria, r, parent=None)
2026-06-08T13:46:55,903   File "/usr/lib/python3/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 173, in _add_to_criteria
2026-06-08T13:46:55,903     raise RequirementsConflicted(criterion)
2026-06-08T13:46:55,903 pip._vendor.resolvelib.resolvers.RequirementsConflicted: Requirements conflict: SpecifierRequirement('mcf==0.10.0')
2026-06-08T13:46:55,903 
2026-06-08T13:46:55,903 During handling of the above exception, another exception occurred:
2026-06-08T13:46:55,903 
2026-06-08T13:46:55,903 Traceback (most recent call last):
2026-06-08T13:46:55,903   File "/usr/lib/python3/dist-packages/pip/_internal/resolution/resolvelib/resolver.py", line 92, in resolve
2026-06-08T13:46:55,903     result = self._result = resolver.resolve(
2026-06-08T13:46:55,903                             ^^^^^^^^^^^^^^^^^
2026-06-08T13:46:55,903   File "/usr/lib/python3/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 481, in resolve
2026-06-08T13:46:55,903     state = resolution.resolve(requirements, max_rounds=max_rounds)
2026-06-08T13:46:55,903             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-06-08T13:46:55,903   File "/usr/lib/python3/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 350, in resolve
2026-06-08T13:46:55,903     raise ResolutionImpossible(e.criterion.information)
2026-06-08T13:46:55,903 pip._vendor.resolvelib.resolvers.ResolutionImpossible: [RequirementInformation(requirement=SpecifierRequirement('mcf==0.10.0'), parent=None)]
2026-06-08T13:46:55,903 
2026-06-08T13:46:55,903 The above exception was the direct cause of the following exception:
2026-06-08T13:46:55,903 
2026-06-08T13:46:55,903 Traceback (most recent call last):
2026-06-08T13:46:55,903   File "/usr/lib/python3/dist-packages/pip/_internal/cli/base_command.py", line 160, in exc_logging_wrapper
2026-06-08T13:46:55,903     status = run_func(*args)
2026-06-08T13:46:55,903              ^^^^^^^^^^^^^^^
2026-06-08T13:46:55,903   File "/usr/lib/python3/dist-packages/pip/_internal/cli/req_command.py", line 247, in wrapper
2026-06-08T13:46:55,903     return func(self, options, args)
2026-06-08T13:46:55,903            ^^^^^^^^^^^^^^^^^^^^^^^^^
2026-06-08T13:46:55,903   File "/usr/lib/python3/dist-packages/pip/_internal/commands/wheel.py", line 170, in run
2026-06-08T13:46:55,903     requirement_set = resolver.resolve(reqs, check_supported_wheels=True)
2026-06-08T13:46:55,903                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-06-08T13:46:55,903   File "/usr/lib/python3/dist-packages/pip/_internal/resolution/resolvelib/resolver.py", line 101, in resolve
2026-06-08T13:46:55,903     raise error from e
2026-06-08T13:46:55,903 pip._internal.exceptions.DistributionNotFound: No matching distribution found for mcf==0.10.0
2026-06-08T13:46:55,908 Removed build tracker: '/tmp/pip-build-tracker-dl3lbsih'