[INFO] cloning repository puma3/LittleCompiler
[INFO] running `"git" "clone" "--bare" "git://github.com/puma3/LittleCompiler.git" "work/cache/sources/gh/puma3/LittleCompiler"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/puma3/LittleCompiler'...
[INFO] running `"git" "clone" "work/cache/sources/gh/puma3/LittleCompiler" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/puma3/LittleCompiler"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/puma3/LittleCompiler'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/puma3/LittleCompiler" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/puma3/LittleCompiler"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/puma3/LittleCompiler'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 37588c3b17b6e257fd086c9965287ba644dc6140
[INFO] sha for GitHub repo puma3/LittleCompiler: 37588c3b17b6e257fd086c9965287ba644dc6140
[INFO] validating manifest of puma3/LittleCompiler 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 puma3/LittleCompiler 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 puma3/LittleCompiler
[INFO] removed path dependency compiler from puma3/LittleCompiler
[INFO] finished frobbing puma3/LittleCompiler
[INFO] frobbed toml for puma3/LittleCompiler written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/puma3/LittleCompiler/Cargo.toml
[INFO] started frobbing puma3/LittleCompiler
[INFO] removed path dependency compiler from puma3/LittleCompiler
[INFO] finished frobbing puma3/LittleCompiler
[INFO] frobbed toml for puma3/LittleCompiler written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/puma3/LittleCompiler/Cargo.toml
[INFO] crate puma3/LittleCompiler 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 `compiler` found
[INFO] [stderr] location searched: registry `https://github.com/rust-lang/crates.io-index`
[INFO] [stderr] required by package `little_compiler v0.1.0 (/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/puma3/LittleCompiler)`
[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