[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-1.38-1/sources/1.37.0/gh/czipperz/rubick"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/czipperz/rubick'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/czipperz/rubick" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/czipperz/rubick"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/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 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of czipperz/rubick 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 czipperz/rubick
[INFO] finished frobbing czipperz/rubick
[INFO] frobbed toml for czipperz/rubick written to work/ex/beta-1.38-1/sources/1.37.0/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-1.38-1/sources/beta-2019-08-13/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" "+1.37.0" "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 czipperz/rubick 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-1/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/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 2848a2073f5474b3a59550ce581ec28a70bc5ec1dcf71570aa7b434d309dd8b8
[INFO] running `"docker" "start" "-a" "2848a2073f5474b3a59550ce581ec28a70bc5ec1dcf71570aa7b434d309dd8b8"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 1.30s
[INFO] running `"docker" "inspect" "2848a2073f5474b3a59550ce581ec28a70bc5ec1dcf71570aa7b434d309dd8b8"`
[INFO] running `"docker" "rm" "-f" "2848a2073f5474b3a59550ce581ec28a70bc5ec1dcf71570aa7b434d309dd8b8"`
[INFO] [stdout] 2848a2073f5474b3a59550ce581ec28a70bc5ec1dcf71570aa7b434d309dd8b8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/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/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 1c298688e24d7f4c2e58c4d1efac1f60d1bd69ee31581ab3b8d9d8c32d077d7f
[INFO] running `"docker" "start" "-a" "1c298688e24d7f4c2e58c4d1efac1f60d1bd69ee31581ab3b8d9d8c32d077d7f"`
[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 1.49s
[INFO] running `"docker" "inspect" "1c298688e24d7f4c2e58c4d1efac1f60d1bd69ee31581ab3b8d9d8c32d077d7f"`
[INFO] running `"docker" "rm" "-f" "1c298688e24d7f4c2e58c4d1efac1f60d1bd69ee31581ab3b8d9d8c32d077d7f"`
[INFO] [stdout] 1c298688e24d7f4c2e58c4d1efac1f60d1bd69ee31581ab3b8d9d8c32d077d7f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/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/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] b688558d97355a82cf0638485e25c765065e686b7c6f68fbe719c95d200edf59
[INFO] running `"docker" "start" "-a" "b688558d97355a82cf0638485e25c765065e686b7c6f68fbe719c95d200edf59"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rubick-018a7fdd0eb75561
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test cube::test::test_display ... ok
[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_left_clockwise ... ok
[INFO] [stdout] test cube::test::test_rotate_left_counter_clockwise ... ok
[INFO] [stdout] test cube::test::test_rotate_front_counter_clockwise ... ok
[INFO] [stdout] test cube::test::test_rotate_front_clockwise ... ok
[INFO] [stdout] test cube::test::test_rotate_right_clockwise ... ok
[INFO] [stdout] test cube::test::test_rotate_bottom_counter_clockwise ... ok
[INFO] [stdout] test cube::test::test_rotate_back_clockwise ... ok
[INFO] [stdout] test cube::test::test_rotate_bottom_clockwise ... ok
[INFO] [stdout] test cube::test::test_rotate_right_counter_clockwise ... ok
[INFO] [stdout] test cube::test::test_rotate_top_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] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "b688558d97355a82cf0638485e25c765065e686b7c6f68fbe719c95d200edf59"`
[INFO] running `"docker" "rm" "-f" "b688558d97355a82cf0638485e25c765065e686b7c6f68fbe719c95d200edf59"`
[INFO] [stdout] b688558d97355a82cf0638485e25c765065e686b7c6f68fbe719c95d200edf59