[INFO] updating cached repository kvark/ref-image
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kvark/ref-image
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kvark/ref-image" "work/ex/beta-1.38-1/sources/1.37.0/gh/kvark/ref-image"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/kvark/ref-image'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kvark/ref-image" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kvark/ref-image"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kvark/ref-image'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d2b4d2347f0fd760676327c4851fadd2b353c5ae
[INFO] sha for GitHub repo kvark/ref-image: d2b4d2347f0fd760676327c4851fadd2b353c5ae
[INFO] validating manifest of kvark/ref-image 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 kvark/ref-image 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 kvark/ref-image
[INFO] finished frobbing kvark/ref-image
[INFO] frobbed toml for kvark/ref-image written to work/ex/beta-1.38-1/sources/1.37.0/gh/kvark/ref-image/Cargo.toml
[INFO] started frobbing kvark/ref-image
[INFO] finished frobbing kvark/ref-image
[INFO] frobbed toml for kvark/ref-image written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kvark/ref-image/Cargo.toml
[INFO] crate kvark/ref-image 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]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing kvark/ref-image 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-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/kvark/ref-image:/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] 6ca844c8ffec24e93d5db8596b4c047dc1607fbf08650ca6ebfb1b2e2c8d6fd7
[INFO] running `"docker" "start" "-a" "6ca844c8ffec24e93d5db8596b4c047dc1607fbf08650ca6ebfb1b2e2c8d6fd7"`
[INFO] [stderr]    Compiling num_cpus v1.7.0
[INFO] [stderr]    Compiling num-integer v0.1.35
[INFO] [stderr]    Compiling enum_primitive v0.1.1
[INFO] [stderr]    Compiling inflate v0.3.3
[INFO] [stderr]    Compiling deflate v0.7.17
[INFO] [stderr]    Compiling base64 v0.8.0
[INFO] [stderr]    Compiling num-iter v0.1.34
[INFO] [stderr]    Compiling num-rational v0.1.40
[INFO] [stderr]    Compiling rayon-core v1.3.0
[INFO] [stderr]    Compiling rayon v0.8.2
[INFO] [stderr]    Compiling jpeg-decoder v0.1.13
[INFO] [stderr]    Compiling png v0.11.0
[INFO] [stderr]    Compiling image v0.18.0
[INFO] [stderr]    Compiling ref_image v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.39s
[INFO] running `"docker" "inspect" "6ca844c8ffec24e93d5db8596b4c047dc1607fbf08650ca6ebfb1b2e2c8d6fd7"`
[INFO] running `"docker" "rm" "-f" "6ca844c8ffec24e93d5db8596b4c047dc1607fbf08650ca6ebfb1b2e2c8d6fd7"`
[INFO] [stdout] 6ca844c8ffec24e93d5db8596b4c047dc1607fbf08650ca6ebfb1b2e2c8d6fd7
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/kvark/ref-image:/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] 34d4e9c13099413499833a883f51d039b5a197b178403e817464b00bcb6fa001
[INFO] running `"docker" "start" "-a" "34d4e9c13099413499833a883f51d039b5a197b178403e817464b00bcb6fa001"`
[INFO] [stderr]    Compiling ref_image v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.30s
[INFO] running `"docker" "inspect" "34d4e9c13099413499833a883f51d039b5a197b178403e817464b00bcb6fa001"`
[INFO] running `"docker" "rm" "-f" "34d4e9c13099413499833a883f51d039b5a197b178403e817464b00bcb6fa001"`
[INFO] [stdout] 34d4e9c13099413499833a883f51d039b5a197b178403e817464b00bcb6fa001
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/kvark/ref-image:/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] 01624d50b600bcb7f3382245ab5c8bb2e90c3d321e3eb68ace468104b004a7d7
[INFO] running `"docker" "start" "-a" "01624d50b600bcb7f3382245ab5c8bb2e90c3d321e3eb68ace468104b004a7d7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/ref_image-6ead9b2eae0602fd
[INFO] [stderr]      Running /opt/crater/target/debug/deps/compare-13f55dfa7cb03dd6
[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] [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] [stderr]    Doc-tests ref_image
[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" "01624d50b600bcb7f3382245ab5c8bb2e90c3d321e3eb68ace468104b004a7d7"`
[INFO] running `"docker" "rm" "-f" "01624d50b600bcb7f3382245ab5c8bb2e90c3d321e3eb68ace468104b004a7d7"`
[INFO] [stdout] 01624d50b600bcb7f3382245ab5c8bb2e90c3d321e3eb68ace468104b004a7d7