Starting download of /gnu/store/sk7x2drf7fjzbxk3vqiq3ipx969g37lk-rust-quickcheck-0.8.5.tar.gz From https://crates.io/api/v1/crates/quickcheck/0.8.5/download... following redirection to `https://static.crates.io/crates/quickcheck/quickcheck-0.8.5.crate'... GC Warning: Repeated allocation of very large block (appr. size 69632): May lead to memory leak and poor performance  download 24KiB +nan.0TiB/s 00:00 [ ] 0.0%  download 24KiB 2.4MiB/s 00:00 [##################] 100.0%  download 24KiB 2.4MiB/s 00:00 [##################] 100.0%