Partial build log
this derivation will be built:
/nix/store/g7zbc3vlsfp4vpp3lfadgbky6bgxl4fr-use-trashcan-for-gen.patch.drv
building '/nix/store/lpvxyirpvjmc7vhgwif3n8fy3q2hl3h5-use-trashcan-for-gen.patch.drv'...
use-trashcan-for-gen.patch> trying https://git.sagemath.org/sage.git/plain/build/pkgs/cypari/patches/trashcan.patch?id=b6ea17ef8e4d652de0a85047bac8d41e90b25555
use-trashcan-for-gen.patch> % Total % Received % Xferd Average Speed Time Time Time Current
use-trashcan-for-gen.patch> Dload Upload Total Spent Left Speed
use-trashcan-for-gen.patch> 0 9115 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
use-trashcan-for-gen.patch> curl: (22) The requested URL returned error: 404
use-trashcan-for-gen.patch> error checking the existence of file:///dev/null//sha256-w4kktWb9/aR9z4CjrUvAMOxEwRN2WkubaKzQttN8rU8=:
use-trashcan-for-gen.patch> curl: (37) Couldn't open file /dev/null//sha256-w4kktWb9/aR9z4CjrUvAMOxEwRN2WkubaKzQttN8rU8=
use-trashcan-for-gen.patch> error: cannot download use-trashcan-for-gen.patch from any mirror
error: builder for '/nix/store/lpvxyirpvjmc7vhgwif3n8fy3q2hl3h5-use-trashcan-for-gen.patch.drv' failed with exit code 1
error: