[INFO] updating cached repository Caprice1/ice
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Caprice1/ice
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Caprice1/ice" "work/ex/beta-1.38-1/sources/1.37.0/gh/Caprice1/ice"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Caprice1/ice'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Caprice1/ice" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Caprice1/ice"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Caprice1/ice'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4fa6c7e5bc79d845990ec70e004e21a1b7a69a49
[INFO] sha for GitHub repo Caprice1/ice: 4fa6c7e5bc79d845990ec70e004e21a1b7a69a49
[INFO] validating manifest of Caprice1/ice on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Caprice1/ice on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Caprice1/ice
[INFO] removed path dependency bellman from Caprice1/ice
[INFO] removed path dependency ff from Caprice1/ice
[INFO] removed path dependency group from Caprice1/ice
[INFO] removed path dependency librustzcash from Caprice1/ice
[INFO] removed path dependency pairing from Caprice1/ice
[INFO] removed path dependency sapling-crypto from Caprice1/ice
[INFO] removed path dependency zcash_primitives from Caprice1/ice
[INFO] removed path dependency zcash_proofs from Caprice1/ice
[INFO] removed path dependency zip32 from Caprice1/ice
[INFO] finished frobbing Caprice1/ice
[INFO] frobbed toml for Caprice1/ice written to work/ex/beta-1.38-1/sources/1.37.0/gh/Caprice1/ice/Cargo.toml
[INFO] started frobbing Caprice1/ice
[INFO] removed path dependency bellman from Caprice1/ice
[INFO] removed path dependency ff from Caprice1/ice
[INFO] removed path dependency group from Caprice1/ice
[INFO] removed path dependency librustzcash from Caprice1/ice
[INFO] removed path dependency pairing from Caprice1/ice
[INFO] removed path dependency sapling-crypto from Caprice1/ice
[INFO] removed path dependency zcash_primitives from Caprice1/ice
[INFO] removed path dependency zcash_proofs from Caprice1/ice
[INFO] removed path dependency zip32 from Caprice1/ice
[INFO] finished frobbing Caprice1/ice
[INFO] frobbed toml for Caprice1/ice written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Caprice1/ice/Cargo.toml
[INFO] crate Caprice1/ice already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: no matching package named `librustzcash` found
[INFO] [stderr] location searched: registry `https://github.com/rust-lang/crates.io-index`
[INFO] [stderr] required by package `ice v0.1.0 (/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Caprice1/ice)`
[ERROR] this task or one of its parent failed!
[ERROR] command `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed