[INFO] cloning repository PRust-Projects/connect-four
[INFO] running `"git" "clone" "--bare" "git://github.com/PRust-Projects/connect-four.git" "work/cache/sources/gh/PRust-Projects/connect-four"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/PRust-Projects/connect-four'...
[INFO] running `"git" "clone" "work/cache/sources/gh/PRust-Projects/connect-four" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/PRust-Projects/connect-four"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/PRust-Projects/connect-four'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/PRust-Projects/connect-four" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/PRust-Projects/connect-four"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/PRust-Projects/connect-four'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ddffdee4455399783efe1ea347fc55cd83acbc8d
[INFO] sha for GitHub repo PRust-Projects/connect-four: ddffdee4455399783efe1ea347fc55cd83acbc8d
[INFO] validating manifest of PRust-Projects/connect-four 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 PRust-Projects/connect-four 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 PRust-Projects/connect-four
[INFO] removed path dependency userio from PRust-Projects/connect-four
[INFO] finished frobbing PRust-Projects/connect-four
[INFO] frobbed toml for PRust-Projects/connect-four written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/PRust-Projects/connect-four/Cargo.toml
[INFO] started frobbing PRust-Projects/connect-four
[INFO] removed path dependency userio from PRust-Projects/connect-four
[INFO] finished frobbing PRust-Projects/connect-four
[INFO] frobbed toml for PRust-Projects/connect-four written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/PRust-Projects/connect-four/Cargo.toml
[INFO] crate PRust-Projects/connect-four 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 `userio` found
[INFO] [stderr] location searched: registry `https://github.com/rust-lang/crates.io-index`
[INFO] [stderr] required by package `connect-four v0.1.0 (/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/PRust-Projects/connect-four)`
[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