[INFO] fetching crate dominant_color 0.2.2...
[INFO] extracting crate dominant_color 0.2.2 into work/ex/beta-1.37-6/sources/1.36.0/reg/dominant_color/0.2.2
[INFO] extracting crate dominant_color 0.2.2 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/dominant_color/0.2.2
[INFO] validating manifest of dominant_color-0.2.2 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of dominant_color-0.2.2 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing dominant_color-0.2.2
[INFO] finished frobbing dominant_color-0.2.2
[INFO] frobbed toml for dominant_color-0.2.2 written to work/ex/beta-1.37-6/sources/1.36.0/reg/dominant_color/0.2.2/Cargo.toml
[INFO] started frobbing dominant_color-0.2.2
[INFO] finished frobbing dominant_color-0.2.2
[INFO] frobbed toml for dominant_color-0.2.2 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/dominant_color/0.2.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "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" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing dominant_color-0.2.2 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/dominant_color/0.2.2:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] e9c948df53ba182dae39dbcd28c6449567ced3162bc4199feb6b3be37ac14c24
[INFO] running `"docker" "start" "-a" "e9c948df53ba182dae39dbcd28c6449567ced3162bc4199feb6b3be37ac14c24"`
[INFO] [stderr]    Compiling dominant_color v0.2.2 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `"docker" "inspect" "e9c948df53ba182dae39dbcd28c6449567ced3162bc4199feb6b3be37ac14c24"`
[INFO] running `"docker" "rm" "-f" "e9c948df53ba182dae39dbcd28c6449567ced3162bc4199feb6b3be37ac14c24"`
[INFO] [stdout] e9c948df53ba182dae39dbcd28c6449567ced3162bc4199feb6b3be37ac14c24
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/dominant_color/0.2.2:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 0ab90e7f5c94e4e3cfa2c67989f93b8a189ca9aba655810bf508ce29139696b2
[INFO] running `"docker" "start" "-a" "0ab90e7f5c94e4e3cfa2c67989f93b8a189ca9aba655810bf508ce29139696b2"`
[INFO] [stderr]    Compiling lzw v0.10.0
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling jpeg-decoder v0.1.15
[INFO] [stderr]    Compiling image v0.21.2
[INFO] [stderr]    Compiling dominant_color v0.2.2 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.34s
[INFO] running `"docker" "inspect" "0ab90e7f5c94e4e3cfa2c67989f93b8a189ca9aba655810bf508ce29139696b2"`
[INFO] running `"docker" "rm" "-f" "0ab90e7f5c94e4e3cfa2c67989f93b8a189ca9aba655810bf508ce29139696b2"`
[INFO] [stdout] 0ab90e7f5c94e4e3cfa2c67989f93b8a189ca9aba655810bf508ce29139696b2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/dominant_color/0.2.2:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] b59160b2678ae51891b133a3b8ed351f7d6a792998ed01e1ec982118db4fe7d2
[INFO] running `"docker" "start" "-a" "b59160b2678ae51891b133a3b8ed351f7d6a792998ed01e1ec982118db4fe7d2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/dominant_color-682830c36bcd569e
[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]      Running /opt/crater/target/debug/deps/test-87ad4bd0e5365721
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test empty_image ... ok
[INFO] [stdout] test transparent_image ... ok
[INFO] [stdout] test two_colors_and_one_transparent ... ok
[INFO] [stdout] test mixed_colors ... ok
[INFO] [stdout] test single_pixel ... ok
[INFO] [stdout] test two_colors ... ok
[INFO] [stdout] test one_color ... ok
[INFO] [stdout] test image ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests dominant_color
[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" "b59160b2678ae51891b133a3b8ed351f7d6a792998ed01e1ec982118db4fe7d2"`
[INFO] running `"docker" "rm" "-f" "b59160b2678ae51891b133a3b8ed351f7d6a792998ed01e1ec982118db4fe7d2"`
[INFO] [stdout] b59160b2678ae51891b133a3b8ed351f7d6a792998ed01e1ec982118db4fe7d2