[INFO] cloning repository erictzeng/advent2016
[INFO] running `"git" "clone" "--bare" "git://github.com/erictzeng/advent2016.git" "work/cache/sources/gh/erictzeng/advent2016"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/erictzeng/advent2016'...
[INFO] running `"git" "clone" "work/cache/sources/gh/erictzeng/advent2016" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/erictzeng/advent2016"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/erictzeng/advent2016'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/erictzeng/advent2016" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/erictzeng/advent2016"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/erictzeng/advent2016'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 519436fb7576d78bdc1389ecd3b78a0b00e6df74
[INFO] sha for GitHub repo erictzeng/advent2016: 519436fb7576d78bdc1389ecd3b78a0b00e6df74
[INFO] validating manifest of erictzeng/advent2016 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 erictzeng/advent2016 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 erictzeng/advent2016
[INFO] finished frobbing erictzeng/advent2016
[INFO] frobbed toml for erictzeng/advent2016 written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/erictzeng/advent2016/Cargo.toml
[INFO] started frobbing erictzeng/advent2016
[INFO] finished frobbing erictzeng/advent2016
[INFO] frobbed toml for erictzeng/advent2016 written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/erictzeng/advent2016/Cargo.toml
[INFO] crate erictzeng/advent2016 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] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking erictzeng/advent2016 against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-5/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/erictzeng/advent2016:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ba8097aaaa5358786069c0ea6b3f126657d35fbc09072cd311b8e5e285695ab5
[INFO] running `"docker" "start" "-a" "ba8097aaaa5358786069c0ea6b3f126657d35fbc09072cd311b8e5e285695ab5"`
[INFO] [stderr]     Checking advent v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.26s
[INFO] running `"docker" "inspect" "ba8097aaaa5358786069c0ea6b3f126657d35fbc09072cd311b8e5e285695ab5"`
[INFO] running `"docker" "rm" "-f" "ba8097aaaa5358786069c0ea6b3f126657d35fbc09072cd311b8e5e285695ab5"`
[INFO] [stdout] ba8097aaaa5358786069c0ea6b3f126657d35fbc09072cd311b8e5e285695ab5