Starting download of /gnu/store/5g91dwvgzs62fvh6x7xr220fwm03dkv5-rust-tokio-reactor-0.1.9.tar.gz From https://crates.io/api/v1/crates/tokio-reactor/0.1.9/download... following redirection to `https://static.crates.io/crates/tokio-reactor/tokio-reactor-0.1.9.crate'... GC Warning: Repeated allocation of very large block (appr. size 69632): May lead to memory leak and poor performance  download 20KiB +nan.0TiB/s 00:00 [ ] 0.0%  download 20KiB +inf.0TiB/s 00:00 [##################] 100.0%  download 20KiB +inf.0TiB/s 00:00 [##################] 100.0%