[INFO] updating cached repository EnsicoinDevs/arc-cli
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/EnsicoinDevs/arc-cli
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/EnsicoinDevs/arc-cli" "work/ex/beta-1.38-1/sources/1.37.0/gh/EnsicoinDevs/arc-cli"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/EnsicoinDevs/arc-cli'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/EnsicoinDevs/arc-cli" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/EnsicoinDevs/arc-cli"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/EnsicoinDevs/arc-cli'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 110a283f5c6cb89a87f46441dac6bddf2db08d85
[INFO] sha for GitHub repo EnsicoinDevs/arc-cli: 110a283f5c6cb89a87f46441dac6bddf2db08d85
[INFO] validating manifest of EnsicoinDevs/arc-cli 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 EnsicoinDevs/arc-cli 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 EnsicoinDevs/arc-cli
[INFO] finished frobbing EnsicoinDevs/arc-cli
[INFO] frobbed toml for EnsicoinDevs/arc-cli written to work/ex/beta-1.38-1/sources/1.37.0/gh/EnsicoinDevs/arc-cli/Cargo.toml
[INFO] started frobbing EnsicoinDevs/arc-cli
[INFO] finished frobbing EnsicoinDevs/arc-cli
[INFO] frobbed toml for EnsicoinDevs/arc-cli written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/EnsicoinDevs/arc-cli/Cargo.toml
[INFO] crate EnsicoinDevs/arc-cli 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]     Updating git repository `https://github.com/tower-rs/tower-grpc`
[INFO] [stderr]     Updating git repository `https://github.com/tower-rs/tower-hyper`
[INFO] [stderr] error: failed to select a version for `hyper`.
[INFO] [stderr]     ... required by package `tower-hyper v0.1.1 (https://github.com/tower-rs/tower-hyper#28305875)`
[INFO] [stderr]     ... which is depended on by `arc-cli v0.1.0 (/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/EnsicoinDevs/arc-cli)`
[INFO] [stderr] versions that meet the requirements `^0.12.29` are: 0.12.33, 0.12.32, 0.12.31, 0.12.30, 0.12.29
[INFO] [stderr] 
[INFO] [stderr] all possible versions conflict with previously selected packages.
[INFO] [stderr] 
[INFO] [stderr]   previously selected package `hyper v0.12.28`
[INFO] [stderr]     ... which is depended on by `arc-cli v0.1.0 (/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/EnsicoinDevs/arc-cli)`
[INFO] [stderr] 
[INFO] [stderr] failed to select a version for `hyper` which could resolve this conflict
[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