[INFO] cloning repository yeliknewo/rl-game-4
[INFO] running `"git" "clone" "--bare" "git://github.com/yeliknewo/rl-game-4.git" "work/cache/sources/gh/yeliknewo/rl-game-4"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/yeliknewo/rl-game-4'...
[INFO] running `"git" "clone" "work/cache/sources/gh/yeliknewo/rl-game-4" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/yeliknewo/rl-game-4"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/yeliknewo/rl-game-4'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/yeliknewo/rl-game-4" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/yeliknewo/rl-game-4"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/yeliknewo/rl-game-4'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7bb444fbb6250bfa0705906f25665b931efd096a
[INFO] sha for GitHub repo yeliknewo/rl-game-4: 7bb444fbb6250bfa0705906f25665b931efd096a
[INFO] validating manifest of yeliknewo/rl-game-4 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 yeliknewo/rl-game-4 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 yeliknewo/rl-game-4
[INFO] removed path dependency art from yeliknewo/rl-game-4
[INFO] removed path dependency components from yeliknewo/rl-game-4
[INFO] removed path dependency core from yeliknewo/rl-game-4
[INFO] removed path dependency dependencies from yeliknewo/rl-game-4
[INFO] removed path dependency event from yeliknewo/rl-game-4
[INFO] removed path dependency event_enums from yeliknewo/rl-game-4
[INFO] removed path dependency graphics from yeliknewo/rl-game-4
[INFO] removed path dependency math from yeliknewo/rl-game-4
[INFO] removed path dependency systems from yeliknewo/rl-game-4
[INFO] removed path dependency utils from yeliknewo/rl-game-4
[INFO] finished frobbing yeliknewo/rl-game-4
[INFO] frobbed toml for yeliknewo/rl-game-4 written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/yeliknewo/rl-game-4/Cargo.toml
[INFO] started frobbing yeliknewo/rl-game-4
[INFO] removed path dependency art from yeliknewo/rl-game-4
[INFO] removed path dependency components from yeliknewo/rl-game-4
[INFO] removed path dependency core from yeliknewo/rl-game-4
[INFO] removed path dependency dependencies from yeliknewo/rl-game-4
[INFO] removed path dependency event from yeliknewo/rl-game-4
[INFO] removed path dependency event_enums from yeliknewo/rl-game-4
[INFO] removed path dependency graphics from yeliknewo/rl-game-4
[INFO] removed path dependency math from yeliknewo/rl-game-4
[INFO] removed path dependency systems from yeliknewo/rl-game-4
[INFO] removed path dependency utils from yeliknewo/rl-game-4
[INFO] finished frobbing yeliknewo/rl-game-4
[INFO] frobbed toml for yeliknewo/rl-game-4 written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/yeliknewo/rl-game-4/Cargo.toml
[INFO] crate yeliknewo/rl-game-4 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: no matching package named `core` found
[INFO] [stderr] location searched: registry `https://github.com/rust-lang/crates.io-index`
[INFO] [stderr] required by package `rl-game-4 v0.1.0 (/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/yeliknewo/rl-game-4)`
[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