[INFO] cloning repository bemeurer/hemoglobin
[INFO] running `"git" "clone" "--bare" "git://github.com/bemeurer/hemoglobin.git" "work/cache/sources/gh/bemeurer/hemoglobin"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/bemeurer/hemoglobin'...
[INFO] running `"git" "clone" "work/cache/sources/gh/bemeurer/hemoglobin" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/bemeurer/hemoglobin"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/bemeurer/hemoglobin'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/bemeurer/hemoglobin" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/bemeurer/hemoglobin"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/bemeurer/hemoglobin'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7cd88b68fb856ad3a8f49f8512ffec529ed4d27e
[INFO] sha for GitHub repo bemeurer/hemoglobin: 7cd88b68fb856ad3a8f49f8512ffec529ed4d27e
[INFO] validating manifest of bemeurer/hemoglobin 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 bemeurer/hemoglobin 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 bemeurer/hemoglobin
[INFO] finished frobbing bemeurer/hemoglobin
[INFO] frobbed toml for bemeurer/hemoglobin written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/bemeurer/hemoglobin/Cargo.toml
[INFO] started frobbing bemeurer/hemoglobin
[INFO] finished frobbing bemeurer/hemoglobin
[INFO] frobbed toml for bemeurer/hemoglobin written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/bemeurer/hemoglobin/Cargo.toml
[INFO] crate bemeurer/hemoglobin 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 bemeurer/hemoglobin against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-1/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/bemeurer/hemoglobin:/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] 55c2a39f86bfb63be459ee9f948a9a93927f63986ee3b6a82f164a301a838164
[INFO] running `"docker" "start" "-a" "55c2a39f86bfb63be459ee9f948a9a93927f63986ee3b6a82f164a301a838164"`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]     Checking rand_core v0.3.0
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling num-bigint v0.2.1
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]     Checking remove_dir_all v0.5.1
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]     Checking term v0.4.6
[INFO] [stderr]     Checking bit-vec v0.5.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.1.0
[INFO] [stderr]    Compiling rand v0.6.1
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking tempfile v3.0.5
[INFO] [stderr]     Checking gag v0.1.10
[INFO] [stderr]     Checking rustty v0.1.12
[INFO] [stderr]     Checking hemoglobin v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `dec`
[INFO] [stderr]    --> src/lib.rs:107:5
[INFO] [stderr]     |
[INFO] [stderr] 107 |     dec: BigUint,
[INFO] [stderr]     |     ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `dec`
[INFO] [stderr]    --> src/lib.rs:107:5
[INFO] [stderr]     |
[INFO] [stderr] 107 |     dec: BigUint,
[INFO] [stderr]     |     ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 21.49s
[INFO] running `"docker" "inspect" "55c2a39f86bfb63be459ee9f948a9a93927f63986ee3b6a82f164a301a838164"`
[INFO] running `"docker" "rm" "-f" "55c2a39f86bfb63be459ee9f948a9a93927f63986ee3b6a82f164a301a838164"`
[INFO] [stdout] 55c2a39f86bfb63be459ee9f948a9a93927f63986ee3b6a82f164a301a838164