Partial build log
this derivation will be built:
/nix/store/1h2h3m0w2n94l2faz6f4hjrw57gk4v0j-PyContracts-1.8.14.tar.gz.drv
building '/nix/store/75wb74c0hyrgsdchyxpjx271gkadnjjj-PyContracts-1.8.14.tar.gz.drv'...
PyContracts> trying https://files.pythonhosted.org/packages/source/P/PyContracts/PyContracts-1.8.14.tar.gz
PyContracts> % Total % Received % Xferd Average Speed Time Time Time Current
PyContracts> Dload Upload Total Spent Left Speed
PyContracts> 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
PyContracts> curl: (22) The requested URL returned error: 404
PyContracts> trying https://pypi.io/packages/source/P/PyContracts/PyContracts-1.8.14.tar.gz
PyContracts> % Total % Received % Xferd Average Speed Time Time Time Current
PyContracts> Dload Upload Total Spent Left Speed
PyContracts> 100 122 100 122 0 0 1476 0 --:--:-- --:--:-- --:--:-- 1487
PyContracts> 100 283 100 283 0 0 949 0 --:--:-- --:--:-- --:--:-- 276k
PyContracts> 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
PyContracts> curl: (22) The requested URL returned error: 404
PyContracts> error checking the existence of file:///dev/null/sha256/03q5m595ysjrc9h57m7prrca6b9l4yrzvdijnzxnhd61p7jzbh49:
PyContracts> curl: (37) Couldn't open file /dev/null/sha256/03q5m595ysjrc9h57m7prrca6b9l4yrzvdijnzxnhd61p7jzbh49
PyContracts> error: cannot download PyContracts-1.8.14.tar.gz from any mirror
error: builder for '/nix/store/75wb74c0hyrgsdchyxpjx271gkadnjjj-PyContracts-1.8.14.tar.gz.drv' failed with exit code 1
error: