Command /home/docs/checkouts/readthedocs.org/user_builds/pycda/envs/stable/bin/python -m pip install --exists-action=w --no-cache-dir -r requirements.txt failed: DEPRECATION: Python 2.7 reached the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 is no longer maintained. pip 21.0 will drop support for Python 2.7 in January 2021. More details about Python 2 support in pip can be found at https://pip.pypa.io/en/latest/development/release-process/#python-2-support pip 21.0 will remove support for this functionality. Collecting pandas==0.22.0 Downloading pandas-0.22.0-cp27-cp27mu-manylinux1_x86_64.whl (24.3 MB) Collecting numpy==1.14.1 Downloading numpy-1.14.1-cp27-cp27mu-manylinux1_x86_64.whl (12.1 MB) Collecting scikit-image==0.13.1 Downloading scikit_image-0.13.1-cp27-cp27mu-manylinux1_x86_64.whl (35.2 MB) Collecting scikit-learn==0.19.1 Downloading scikit_learn-0.19.1-cp27-cp27mu-manylinux1_x86_64.whl (12.2 MB) Collecting h5py==2.7.1 Downloading h5py-2.7.1-cp27-cp27mu-manylinux1_x86_64.whl (4.8 MB) Obtaining pycda from git+https://github.com/AlliedToasters/PyCDA.git@2a5c85c4563cac3dfe0bd05c4b4866f3f7978e87#egg=pycda (from -r requirements.txt (line 6)) Cloning https://github.com/AlliedToasters/PyCDA.git (to revision 2a5c85c4563cac3dfe0bd05c4b4866f3f7978e87) to /home/docs/checkouts/readthedocs.org/user_builds/pycda/envs/stable/src/pycda Running command git clone -q https://github.com/AlliedToasters/PyCDA.git /home/docs/checkouts/readthedocs.org/user_builds/pycda/envs/stable/src/pycda Running command git rev-parse -q --verify 'sha^2a5c85c4563cac3dfe0bd05c4b4866f3f7978e87' Running command git fetch -q https://github.com/AlliedToasters/PyCDA.git 2a5c85c4563cac3dfe0bd05c4b4866f3f7978e87 Running command git checkout -q 2a5c85c4563cac3dfe0bd05c4b4866f3f7978e87 ERROR: Could not find a version that satisfies the requirement tensorflow==1.12.1 (from -r requirements.txt (line 7)) (from versions: 0.12.0, 0.12.1, 1.0.0, 1.0.1, 1.1.0, 1.2.0, 1.2.1, 1.3.0, 1.4.0, 1.4.1, 1.5.0, 1.5.1, 1.6.0, 1.7.0, 1.7.1, 1.8.0, 1.9.0, 1.10.0, 1.10.1, 1.11.0, 1.12.0, 1.12.2, 1.12.3, 1.13.1, 1.13.2, 1.14.0, 1.15.0, 2.0.0, 2.1.0) ERROR: No matching distribution found for tensorflow==1.12.1 (from -r requirements.txt (line 7))