Hello Guix! It looks like the hash for the new rust 1.36 is wrong, I get the following:
~~~ $ guix build rust building /gnu/store/37wfhzp1yqm9w4vq0dhmy6bg3ajaa9yh-rustc-1.36.0-src.tar.gz.drv... Starting download of /gnu/store/jm9xvf6qy4zxkb7rkmpz8ygf55l8v8v5-rustc-1.36.0-src.tar.gz >From https://static.rust-lang.org/dist/rustc-1.36.0-src.tar.gz... downloading from https://static.rust-lang.org/dist/rustc-1.36.0-src.tar.gz... rustc-1.36.0-src.tar.gz 147.5MiB 1.6MiB/s 01:35 [##################] 100.0% sha256 hash mismatch for /gnu/store/jm9xvf6qy4zxkb7rkmpz8ygf55l8v8v5-rustc-1.36.0-src.tar.gz: expected hash: 18r688ih4xi9m8gv55g1amb8inrwkdxp5fbcqb6i4gqxi90l3i0m actual hash: 06xv2p6zq03lidr0yaf029ii8wnjjqa894nkmrm6s0rx47by9i04 hash mismatch for store item '/gnu/store/jm9xvf6qy4zxkb7rkmpz8ygf55l8v8v5-rustc-1.36.0-src.tar.gz' build of /gnu/store/37wfhzp1yqm9w4vq0dhmy6bg3ajaa9yh-rustc-1.36.0-src.tar.gz.drv failed View build log at '/var/log/guix/drvs/37/wfhzp1yqm9w4vq0dhmy6bg3ajaa9yh-rustc-1.36.0-src.tar.gz.drv.bz2'. cannot build derivation `/gnu/store/wzslkk72p8g9l5zymcb4hqfmq4zg29q7-rustc-1.36.0-src.tar.xz.drv': 1 dependencies couldn't be built cannot build derivation `/gnu/store/61660f8p8xxdrhl267402yzq2d4c89ix-rust-1.36.0.drv': 1 dependencies couldn't be built guix build: error: build of `/gnu/store/61660f8p8xxdrhl267402yzq2d4c89ix-rust-1.36.0.drv' failed ~~~ Can you also reproduce this? Hopefully it's not unstable :-/. Thanks, Pierre