[INFO] updating cached repository czipperz/rubick
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/czipperz/rubick
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/czipperz/rubick" "work/ex/beta-1.37-6/sources/1.36.0/gh/czipperz/rubick"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/czipperz/rubick'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/czipperz/rubick" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/czipperz/rubick"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/czipperz/rubick'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7e287b723bc2ebd94a844d9aec4c7af605dad81e
[INFO] sha for GitHub repo czipperz/rubick: 7e287b723bc2ebd94a844d9aec4c7af605dad81e
[INFO] validating manifest of czipperz/rubick 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 czipperz/rubick 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 czipperz/rubick
[INFO] finished frobbing czipperz/rubick
[INFO] frobbed toml for czipperz/rubick written to work/ex/beta-1.37-6/sources/1.36.0/gh/czipperz/rubick/Cargo.toml
[INFO] started frobbing czipperz/rubick
[INFO] finished frobbing czipperz/rubick
[INFO] frobbed toml for czipperz/rubick written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/czipperz/rubick/Cargo.toml
[INFO] crate czipperz/rubick 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing czipperz/rubick 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/czipperz/rubick:/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] ae866d219d81869212c60fec2e4eae427d52c14cf36921011d3d0191b49a4504
[INFO] running `"docker" "start" "-a" "ae866d219d81869212c60fec2e4eae427d52c14cf36921011d3d0191b49a4504"`
[INFO] [stderr]    Compiling rubick v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `rotate_random`
[INFO] [stderr]    --> src/cube.rs:143:5
[INFO] [stderr]     |
[INFO] [stderr] 143 |     pub fn rotate_random(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `num_bottom_solved`
[INFO] [stderr]  --> src/predicates.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn num_bottom_solved(cube: &Cube) -> usize {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.36s
[INFO] running `"docker" "inspect" "ae866d219d81869212c60fec2e4eae427d52c14cf36921011d3d0191b49a4504"`
[INFO] running `"docker" "rm" "-f" "ae866d219d81869212c60fec2e4eae427d52c14cf36921011d3d0191b49a4504"`
[INFO] [stdout] ae866d219d81869212c60fec2e4eae427d52c14cf36921011d3d0191b49a4504
[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/czipperz/rubick:/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] ced3f6d9cee1525c7f0227e3dde83015eab7db4fdb51cccdd0918cfc7e04a979
[INFO] running `"docker" "start" "-a" "ced3f6d9cee1525c7f0227e3dde83015eab7db4fdb51cccdd0918cfc7e04a979"`
[INFO] [stderr]    Compiling rubick v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `rotate_random`
[INFO] [stderr]    --> src/cube.rs:143:5
[INFO] [stderr]     |
[INFO] [stderr] 143 |     pub fn rotate_random(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.41s
[INFO] running `"docker" "inspect" "ced3f6d9cee1525c7f0227e3dde83015eab7db4fdb51cccdd0918cfc7e04a979"`
[INFO] running `"docker" "rm" "-f" "ced3f6d9cee1525c7f0227e3dde83015eab7db4fdb51cccdd0918cfc7e04a979"`
[INFO] [stdout] ced3f6d9cee1525c7f0227e3dde83015eab7db4fdb51cccdd0918cfc7e04a979
[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/czipperz/rubick:/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] 520cc826e649293f7aa62d65079485bc320d7e29612039290d9afacdef272665
[INFO] running `"docker" "start" "-a" "520cc826e649293f7aa62d65079485bc320d7e29612039290d9afacdef272665"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rubick-81d3ca598bc6aa3e
[INFO] [stdout] running 15 tests
[INFO] [stdout] test cube::test::rotate_back_counter_clockwise ... ok
[INFO] [stdout] test cube::test::test_new ... ok
[INFO] [stdout] test cube::test::test_rotate_back_clockwise ... ok
[INFO] [stdout] test cube::test::test_rotate_front_counter_clockwise ... ok
[INFO] [stdout] test cube::test::test_rotate_bottom_counter_clockwise ... ok
[INFO] [stdout] test cube::test::test_rotate_front_clockwise ... ok
[INFO] [stdout] test cube::test::test_rotate_top_counter_clockwise ... ok
[INFO] [stdout] test predicates::test::test_num_bottom_solved ... ok
[INFO] [stdout] test cube::test::test_rotate_bottom_clockwise ... ok
[INFO] [stdout] test cube::test::test_rotate_left_clockwise ... ok
[INFO] [stdout] test cube::test::test_rotate_top_clockwise ... ok
[INFO] [stdout] test cube::test::test_display ... ok
[INFO] [stdout] test cube::test::test_rotate_left_counter_clockwise ... ok
[INFO] [stdout] test cube::test::test_rotate_right_clockwise ... ok
[INFO] [stdout] test cube::test::test_rotate_right_counter_clockwise ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "520cc826e649293f7aa62d65079485bc320d7e29612039290d9afacdef272665"`
[INFO] running `"docker" "rm" "-f" "520cc826e649293f7aa62d65079485bc320d7e29612039290d9afacdef272665"`
[INFO] [stdout] 520cc826e649293f7aa62d65079485bc320d7e29612039290d9afacdef272665