[INFO] updating cached repository LFalch/mazes
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/LFalch/mazes
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/LFalch/mazes" "work/ex/beta-1.38-1/sources/1.37.0/gh/LFalch/mazes"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/LFalch/mazes'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/LFalch/mazes" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/LFalch/mazes"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/LFalch/mazes'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c4e83084f645d2582929d8a818df0c4d06923bb7
[INFO] sha for GitHub repo LFalch/mazes: c4e83084f645d2582929d8a818df0c4d06923bb7
[INFO] validating manifest of LFalch/mazes 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 LFalch/mazes 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 LFalch/mazes
[INFO] finished frobbing LFalch/mazes
[INFO] frobbed toml for LFalch/mazes written to work/ex/beta-1.38-1/sources/1.37.0/gh/LFalch/mazes/Cargo.toml
[INFO] started frobbing LFalch/mazes
[INFO] finished frobbing LFalch/mazes
[INFO] frobbed toml for LFalch/mazes written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/LFalch/mazes/Cargo.toml
[INFO] crate LFalch/mazes 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing LFalch/mazes 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/LFalch/mazes:/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] c6a52490fa76c5ecd5ba7278cbf73b4849a8ca9cb0e45989e45050dd3652262a
[INFO] running `"docker" "start" "-a" "c6a52490fa76c5ecd5ba7278cbf73b4849a8ca9cb0e45989e45050dd3652262a"`
[INFO] [stderr]    Compiling deflate v0.7.15
[INFO] [stderr]    Compiling rayon-core v1.2.1
[INFO] [stderr]    Compiling rayon v0.8.2
[INFO] [stderr]    Compiling png v0.9.0
[INFO] [stderr]    Compiling jpeg-decoder v0.1.13
[INFO] [stderr]    Compiling image v0.15.0
[INFO] [stderr]    Compiling mazes v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.54s
[INFO] running `"docker" "inspect" "c6a52490fa76c5ecd5ba7278cbf73b4849a8ca9cb0e45989e45050dd3652262a"`
[INFO] running `"docker" "rm" "-f" "c6a52490fa76c5ecd5ba7278cbf73b4849a8ca9cb0e45989e45050dd3652262a"`
[INFO] [stdout] c6a52490fa76c5ecd5ba7278cbf73b4849a8ca9cb0e45989e45050dd3652262a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/LFalch/mazes:/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] 41b4e6393c5dd5c80a442ad245d2dba6923655a15ee1f42b3d5dc9da59f5026f
[INFO] running `"docker" "start" "-a" "41b4e6393c5dd5c80a442ad245d2dba6923655a15ee1f42b3d5dc9da59f5026f"`
[INFO] [stderr]    Compiling mazes v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.14s
[INFO] running `"docker" "inspect" "41b4e6393c5dd5c80a442ad245d2dba6923655a15ee1f42b3d5dc9da59f5026f"`
[INFO] running `"docker" "rm" "-f" "41b4e6393c5dd5c80a442ad245d2dba6923655a15ee1f42b3d5dc9da59f5026f"`
[INFO] [stdout] 41b4e6393c5dd5c80a442ad245d2dba6923655a15ee1f42b3d5dc9da59f5026f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/LFalch/mazes:/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] 81bf09a20ad0cd97c4add6956e6a4eff661404e49d63b768f958dc3a8d7649b5
[INFO] running `"docker" "start" "-a" "81bf09a20ad0cd97c4add6956e6a4eff661404e49d63b768f958dc3a8d7649b5"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mazes-2b90f5ad4ae4a31f
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mazes-a5ad2d9c7c3b733b
[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 mazes
[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" "81bf09a20ad0cd97c4add6956e6a4eff661404e49d63b768f958dc3a8d7649b5"`
[INFO] running `"docker" "rm" "-f" "81bf09a20ad0cd97c4add6956e6a4eff661404e49d63b768f958dc3a8d7649b5"`
[INFO] [stdout] 81bf09a20ad0cd97c4add6956e6a4eff661404e49d63b768f958dc3a8d7649b5