Can not find version that exists at specific date

[Reset816]

I want to install the scikit-learn 0.21.2 but don't want to install its latest dependences
I notice that scikit-learn 0.21.2 release on May 24, 2019

With the following command I start the timemachine
pypi-timemachine 2019-05-26

However, when I type in the command
pip install --no-cache-dir --index-url http://127.0.0.1:46403/ scikit-learn==0.21.2

It failed and the error message is above

Am I made some mistakes or it's a bug?

[Reset816]

same situation happens when I want to install jupyterlab 0.35.4 when using command
pypi-timemachine 2019-08-08

[Reset816]

It's strange that when I run the timemachine in the wsl2 ubuntu:18.04 instead of docker image of ubuntu:1804 in wsl2 ubuntu:20.04 5 hours ago, the problem is gone and work perfectly