[INFO] updating cached repository TheRiven/mazegenerator
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/TheRiven/mazegenerator
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/TheRiven/mazegenerator" "work/ex/beta-1.38-1/sources/1.37.0/gh/TheRiven/mazegenerator"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/TheRiven/mazegenerator'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/TheRiven/mazegenerator" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/TheRiven/mazegenerator"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/TheRiven/mazegenerator'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9e021d139b3ec222eae371c8cfb95033e6e5a168
[INFO] sha for GitHub repo TheRiven/mazegenerator: 9e021d139b3ec222eae371c8cfb95033e6e5a168
[INFO] validating manifest of TheRiven/mazegenerator 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 TheRiven/mazegenerator 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 TheRiven/mazegenerator
[INFO] finished frobbing TheRiven/mazegenerator
[INFO] frobbed toml for TheRiven/mazegenerator written to work/ex/beta-1.38-1/sources/1.37.0/gh/TheRiven/mazegenerator/Cargo.toml
[INFO] started frobbing TheRiven/mazegenerator
[INFO] finished frobbing TheRiven/mazegenerator
[INFO] frobbed toml for TheRiven/mazegenerator written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/TheRiven/mazegenerator/Cargo.toml
[INFO] crate TheRiven/mazegenerator 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing TheRiven/mazegenerator against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/TheRiven/mazegenerator:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 0c3ff7e13381b9273c58d6d00cbba58e7cbd7e15f59080428021fd80b3c51ff6
[INFO] running `"docker" "start" "-a" "0c3ff7e13381b9273c58d6d00cbba58e7cbd7e15f59080428021fd80b3c51ff6"`
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.0
[INFO] [stderr]    Compiling png v0.11.0
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]    Compiling rayon v1.0.1
[INFO] [stderr]    Compiling jpeg-decoder v0.1.14
[INFO] [stderr]    Compiling image v0.18.0
[INFO] [stderr]    Compiling mazegenerator v0.8.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.89s
[INFO] running `"docker" "inspect" "0c3ff7e13381b9273c58d6d00cbba58e7cbd7e15f59080428021fd80b3c51ff6"`
[INFO] running `"docker" "rm" "-f" "0c3ff7e13381b9273c58d6d00cbba58e7cbd7e15f59080428021fd80b3c51ff6"`
[INFO] [stdout] 0c3ff7e13381b9273c58d6d00cbba58e7cbd7e15f59080428021fd80b3c51ff6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/TheRiven/mazegenerator:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] c638317c210919f61a5123a6b027e787cde4f11f56a9065985a3be6f14ce4cfb
[INFO] running `"docker" "start" "-a" "c638317c210919f61a5123a6b027e787cde4f11f56a9065985a3be6f14ce4cfb"`
[INFO] [stderr]    Compiling mazegenerator v0.8.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.04s
[INFO] running `"docker" "inspect" "c638317c210919f61a5123a6b027e787cde4f11f56a9065985a3be6f14ce4cfb"`
[INFO] running `"docker" "rm" "-f" "c638317c210919f61a5123a6b027e787cde4f11f56a9065985a3be6f14ce4cfb"`
[INFO] [stdout] c638317c210919f61a5123a6b027e787cde4f11f56a9065985a3be6f14ce4cfb
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/TheRiven/mazegenerator:/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 81ca4dbf8ac9488cde20694fd0f31ec02a462933c71422566c3c9a6f5fffdbe6
[INFO] running `"docker" "start" "-a" "81ca4dbf8ac9488cde20694fd0f31ec02a462933c71422566c3c9a6f5fffdbe6"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mazegenerator-58e5008481e5436f
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test mazebuilder::tests::test_dfs_15_23 ... ok
[INFO] [stdout] test mazebuilder::tests::test_dfs_10_10 ... ok
[INFO] [stdout] test mazebuilder::tests::test_generate_maze_selector ... ok
[INFO] [stdout] test mazebuilder::tests::test_kruskal_15_23 ... ok
[INFO] [stdout] test mazebuilder::tests::test_kruskal_10_10 ... ok
[INFO] [stdout] test mazebuilder::tests::test_dfs_100_100 ... ok
[INFO] [stdout] test mazebuilder::tests::test_kruskal_100_100 ... ok
[INFO] [stdout] test mazebuilder::tests::test_dfs_imperfect ... ok
[INFO] [stdout] test mazebuilder::tests::test_kruskal_imperfect ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mazegenerator-117f66655693876f
[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 mazegenerator
[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" "81ca4dbf8ac9488cde20694fd0f31ec02a462933c71422566c3c9a6f5fffdbe6"`
[INFO] running `"docker" "rm" "-f" "81ca4dbf8ac9488cde20694fd0f31ec02a462933c71422566c3c9a6f5fffdbe6"`
[INFO] [stdout] 81ca4dbf8ac9488cde20694fd0f31ec02a462933c71422566c3c9a6f5fffdbe6