[INFO] cloning repository 46bit/comms
[INFO] running `"git" "clone" "--bare" "git://github.com/46bit/comms.git" "work/cache/sources/gh/46bit/comms"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/46bit/comms'...
[INFO] running `"git" "clone" "work/cache/sources/gh/46bit/comms" "work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/46bit/comms"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/46bit/comms'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/46bit/comms" "work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/46bit/comms"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/46bit/comms'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6d96ab1c55c57c5ae6d84e9064756cabe32135c4
[INFO] sha for GitHub repo 46bit/comms: 6d96ab1c55c57c5ae6d84e9064756cabe32135c4
[INFO] validating manifest of 46bit/comms on toolchain master#c0086b9e8972fef9fd4af24bae20d45021ed06c6
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of 46bit/comms on toolchain try#290ac7b29f41ff9fa5232f9a1116ea71a3501063
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing 46bit/comms
[INFO] finished frobbing 46bit/comms
[INFO] frobbed toml for 46bit/comms written to work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/46bit/comms/Cargo.toml
[INFO] started frobbing 46bit/comms
[INFO] finished frobbing 46bit/comms
[INFO] frobbed toml for 46bit/comms written to work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/46bit/comms/Cargo.toml
[INFO] crate 46bit/comms has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking 46bit/comms against master#c0086b9e8972fef9fd4af24bae20d45021ed06c6 for pr-58899
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58899/worker-7/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/46bit/comms:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] dc21584d21bc265f37738c1183af21a6caa0bcbf8fdfabf3c393971be89cee86
[INFO] running `"docker" "start" "-a" "dc21584d21bc265f37738c1183af21a6caa0bcbf8fdfabf3c393971be89cee86"`
[INFO] [stderr]     Checking tokio-timer v0.1.1
[INFO] [stderr]     Checking env_logger v0.3.5
[INFO] [stderr]     Checking comms v0.1.4 (/opt/crater/workdir)
[INFO] [stderr]     Checking quickcheck v0.2.27
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.98s
[INFO] running `"docker" "inspect" "dc21584d21bc265f37738c1183af21a6caa0bcbf8fdfabf3c393971be89cee86"`
[INFO] running `"docker" "rm" "-f" "dc21584d21bc265f37738c1183af21a6caa0bcbf8fdfabf3c393971be89cee86"`
[INFO] [stdout] dc21584d21bc265f37738c1183af21a6caa0bcbf8fdfabf3c393971be89cee86