[INFO] updating cached repository neosmart/imgcompare
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/neosmart/imgcompare
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/neosmart/imgcompare" "work/ex/beta-1.38-1/sources/1.37.0/gh/neosmart/imgcompare"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/neosmart/imgcompare'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/neosmart/imgcompare" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/neosmart/imgcompare"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/neosmart/imgcompare'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] da0a0fbfede7e4f4c4e8ca7bf4bc170f2e7355ae
[INFO] sha for GitHub repo neosmart/imgcompare: da0a0fbfede7e4f4c4e8ca7bf4bc170f2e7355ae
[INFO] validating manifest of neosmart/imgcompare on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of neosmart/imgcompare on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing neosmart/imgcompare
[INFO] finished frobbing neosmart/imgcompare
[INFO] frobbed toml for neosmart/imgcompare written to work/ex/beta-1.38-1/sources/1.37.0/gh/neosmart/imgcompare/Cargo.toml
[INFO] started frobbing neosmart/imgcompare
[INFO] finished frobbing neosmart/imgcompare
[INFO] frobbed toml for neosmart/imgcompare written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/neosmart/imgcompare/Cargo.toml
[INFO] crate neosmart/imgcompare already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/neosmart/imgcompare/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing neosmart/imgcompare against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/neosmart/imgcompare:/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] ec81ff67a778279f77adbf94a8cd7c9e70919c76cf8343b9e01ff2bfa39d648f
[INFO] running `"docker" "start" "-a" "ec81ff67a778279f77adbf94a8cd7c9e70919c76cf8343b9e01ff2bfa39d648f"`
[INFO] [stderr]    Compiling png v0.8.0
[INFO] [stderr]    Compiling image v0.14.0
[INFO] [stderr]    Compiling imgcompare v0.1.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.17s
[INFO] running `"docker" "inspect" "ec81ff67a778279f77adbf94a8cd7c9e70919c76cf8343b9e01ff2bfa39d648f"`
[INFO] running `"docker" "rm" "-f" "ec81ff67a778279f77adbf94a8cd7c9e70919c76cf8343b9e01ff2bfa39d648f"`
[INFO] [stdout] ec81ff67a778279f77adbf94a8cd7c9e70919c76cf8343b9e01ff2bfa39d648f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/neosmart/imgcompare:/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 63184adbdad8b293743598981035802d4ad739fd971e9b342e39d83d30b5c961
[INFO] running `"docker" "start" "-a" "63184adbdad8b293743598981035802d4ad739fd971e9b342e39d83d30b5c961"`
[INFO] [stderr]    Compiling imgcompare v0.1.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `"docker" "inspect" "63184adbdad8b293743598981035802d4ad739fd971e9b342e39d83d30b5c961"`
[INFO] running `"docker" "rm" "-f" "63184adbdad8b293743598981035802d4ad739fd971e9b342e39d83d30b5c961"`
[INFO] [stdout] 63184adbdad8b293743598981035802d4ad739fd971e9b342e39d83d30b5c961
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/neosmart/imgcompare:/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=warn" "-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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] ffa031c1a85b445ce1211e33eaf8a43959d1826c21f6ddd0a02fcd1067fd16a2
[INFO] running `"docker" "start" "-a" "ffa031c1a85b445ce1211e33eaf8a43959d1826c21f6ddd0a02fcd1067fd16a2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/imgcompare-04e3779ea526f9a9
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "ffa031c1a85b445ce1211e33eaf8a43959d1826c21f6ddd0a02fcd1067fd16a2"`
[INFO] running `"docker" "rm" "-f" "ffa031c1a85b445ce1211e33eaf8a43959d1826c21f6ddd0a02fcd1067fd16a2"`
[INFO] [stdout] ffa031c1a85b445ce1211e33eaf8a43959d1826c21f6ddd0a02fcd1067fd16a2