Partial build log
this derivation will be built:
/nix/store/ywgc6380xbxzxx4zs7mh1gp8r4jrh7xq-crate-structopt-derive-0.4.15.tar.gz.drv
building '/nix/store/ywgc6380xbxzxx4zs7mh1gp8r4jrh7xq-crate-structopt-derive-0.4.15.tar.gz.drv'...
crate-structopt-derive> trying https://crates.io/api/v1/crates/structopt-derive/0.4.15/download
crate-structopt-derive> % Total % Received % Xferd Average Speed Time Time Time Current
crate-structopt-derive> Dload Upload Total Spent Left Speed
crate-structopt-derive> 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
crate-structopt-derive> 100 20861 100 20861 0 0 93294 0 --:--:-- --:--:-- --:--:-- 93294