[INFO] cloning repository udtrokia/ethereum-key
[INFO] running `"git" "clone" "--bare" "git://github.com/udtrokia/ethereum-key.git" "work/cache/sources/gh/udtrokia/ethereum-key"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/udtrokia/ethereum-key'...
[INFO] running `"git" "clone" "work/cache/sources/gh/udtrokia/ethereum-key" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/udtrokia/ethereum-key"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/udtrokia/ethereum-key'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/udtrokia/ethereum-key" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/udtrokia/ethereum-key"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/udtrokia/ethereum-key'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8ab285280aef5e5aef300c430b55640c497cab46
[INFO] sha for GitHub repo udtrokia/ethereum-key: 8ab285280aef5e5aef300c430b55640c497cab46
[INFO] validating manifest of udtrokia/ethereum-key on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of udtrokia/ethereum-key on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing udtrokia/ethereum-key
[INFO] removed path dependency ethkey from udtrokia/ethereum-key
[INFO] finished frobbing udtrokia/ethereum-key
[INFO] frobbed toml for udtrokia/ethereum-key written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/udtrokia/ethereum-key/Cargo.toml
[INFO] started frobbing udtrokia/ethereum-key
[INFO] removed path dependency ethkey from udtrokia/ethereum-key
[INFO] finished frobbing udtrokia/ethereum-key
[INFO] frobbed toml for udtrokia/ethereum-key written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/udtrokia/ethereum-key/Cargo.toml
[INFO] crate udtrokia/ethereum-key already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for the requirement `ethkey = "^0.3.0"`
[INFO] [stderr]   candidate versions found which didn't match: 0.2.5, 0.2.4, 0.2.3, ...
[INFO] [stderr]   location searched: crates.io index
[INFO] [stderr] required by package `ethereum-key v0.1.0 (/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/udtrokia/ethereum-key)`
[ERROR] this task or one of its parent failed!
[ERROR] command `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed