[INFO] updating cached repository 02alexander/maze-generator
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/02alexander/maze-generator
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/02alexander/maze-generator" "work/ex/beta-1.37-6/sources/1.36.0/gh/02alexander/maze-generator"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/02alexander/maze-generator'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/02alexander/maze-generator" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/02alexander/maze-generator"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/02alexander/maze-generator'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] defd57655ec68cc273815234496f81e2a6613f59
[INFO] sha for GitHub repo 02alexander/maze-generator: defd57655ec68cc273815234496f81e2a6613f59
[INFO] validating manifest of 02alexander/maze-generator 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 02alexander/maze-generator 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 02alexander/maze-generator
[INFO] finished frobbing 02alexander/maze-generator
[INFO] frobbed toml for 02alexander/maze-generator written to work/ex/beta-1.37-6/sources/1.36.0/gh/02alexander/maze-generator/Cargo.toml
[INFO] started frobbing 02alexander/maze-generator
[INFO] finished frobbing 02alexander/maze-generator
[INFO] frobbed toml for 02alexander/maze-generator written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/02alexander/maze-generator/Cargo.toml
[INFO] crate 02alexander/maze-generator already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing 02alexander/maze-generator 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-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/02alexander/maze-generator:/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] 4d3ec7e725ed5ad268f6c5136bbbf67b77d5ca99de6ccf69a38c633df9e80dcd
[INFO] running `"docker" "start" "-a" "4d3ec7e725ed5ad268f6c5136bbbf67b77d5ca99de6ccf69a38c633df9e80dcd"`
[INFO] [stderr]    Compiling cc v1.0.17
[INFO] [stderr]    Compiling rand v0.5.1
[INFO] [stderr]    Compiling clap v2.31.2
[INFO] [stderr]    Compiling miniz-sys v0.1.10
[INFO] [stderr]    Compiling flate2 v0.2.20
[INFO] [stderr]    Compiling imagefmt v4.0.0
[INFO] [stderr]    Compiling maze-generator v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.91s
[INFO] running `"docker" "inspect" "4d3ec7e725ed5ad268f6c5136bbbf67b77d5ca99de6ccf69a38c633df9e80dcd"`
[INFO] running `"docker" "rm" "-f" "4d3ec7e725ed5ad268f6c5136bbbf67b77d5ca99de6ccf69a38c633df9e80dcd"`
[INFO] [stdout] 4d3ec7e725ed5ad268f6c5136bbbf67b77d5ca99de6ccf69a38c633df9e80dcd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/02alexander/maze-generator:/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] 2c902f14d5745a30545506d926d7efcc5fbc02c26d79e3409639e50a93aa41ff
[INFO] running `"docker" "start" "-a" "2c902f14d5745a30545506d926d7efcc5fbc02c26d79e3409639e50a93aa41ff"`
[INFO] [stderr]    Compiling maze-generator v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.57s
[INFO] running `"docker" "inspect" "2c902f14d5745a30545506d926d7efcc5fbc02c26d79e3409639e50a93aa41ff"`
[INFO] running `"docker" "rm" "-f" "2c902f14d5745a30545506d926d7efcc5fbc02c26d79e3409639e50a93aa41ff"`
[INFO] [stdout] 2c902f14d5745a30545506d926d7efcc5fbc02c26d79e3409639e50a93aa41ff
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/02alexander/maze-generator:/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] 54b52c7497a0b804c90d6bb80f6a99c9da847ecf475046bff94b87ff15b34b3a
[INFO] running `"docker" "start" "-a" "54b52c7497a0b804c90d6bb80f6a99c9da847ecf475046bff94b87ff15b34b3a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/maze_generator-cf79082f2b9a5554
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test maze::maze::test::connect ... ok
[INFO] [stdout] test maze::maze::test::constructor ... ok
[INFO] [stdout] test maze::maze::test::inside ... ok
[INFO] [stdout] test maze::maze::test::visited ... ok
[INFO] [stdout] test maze::depthfirstsearch::test::unvisited_neighbor ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "54b52c7497a0b804c90d6bb80f6a99c9da847ecf475046bff94b87ff15b34b3a"`
[INFO] running `"docker" "rm" "-f" "54b52c7497a0b804c90d6bb80f6a99c9da847ecf475046bff94b87ff15b34b3a"`
[INFO] [stdout] 54b52c7497a0b804c90d6bb80f6a99c9da847ecf475046bff94b87ff15b34b3a