this derivation will be built: /nix/store/j6fy4lf79g4lvslm3symcj5asrb5m0wk-nix-shell.drv these 4 paths will be fetched (18.6 MiB download, 63.1 MiB unpacked): /nix/store/k8airww97254r2csqnn2rw2s5flq639h-cargo-criterion-1.1.0 /nix/store/1r1gmmrx1rq6zj14pic6wgikabwdwc37-cargo-insta-1.49.0 /nix/store/khiyyqmqzi87ashmcahbc85c93f3qwag-rust-analyzer-2026-10-19 /nix/store/xrgbvhcjwvjba0cfzzmpd5zz01pzsyri-rust-analyzer-unwrapped-2026-10-19