[INFO] updating cached repository https://github.com/czipperz/rubick
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7e287b723bc2ebd94a844d9aec4c7af605dad81e
[INFO] testing czipperz/rubick against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fczipperz%2Frubick" "work/builds/worker-0/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/czipperz/rubick on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/czipperz/rubick
[INFO] finished tweaking git repo https://github.com/czipperz/rubick
[INFO] tweaked toml for git repo https://github.com/czipperz/rubick written to work/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/czipperz/rubick already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] 2bf6953e7206b183e51de278fa29d1333ee92ceda040ba7f882fbd824812b436
[INFO] running `"docker" "start" "-a" "2bf6953e7206b183e51de278fa29d1333ee92ceda040ba7f882fbd824812b436"`
[INFO] [stderr]    Compiling rubick v0.1.0 (/opt/rustwide/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 0.96s
[INFO] running `"docker" "inspect" "2bf6953e7206b183e51de278fa29d1333ee92ceda040ba7f882fbd824812b436"`
[INFO] running `"docker" "rm" "-f" "2bf6953e7206b183e51de278fa29d1333ee92ceda040ba7f882fbd824812b436"`
[INFO] [stdout] 2bf6953e7206b183e51de278fa29d1333ee92ceda040ba7f882fbd824812b436
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] df3220cc142bca73ffae1da40079408f6642aa964176ca691a5feda1645e5ec9
[INFO] running `"docker" "start" "-a" "df3220cc142bca73ffae1da40079408f6642aa964176ca691a5feda1645e5ec9"`
[INFO] [stderr]    Compiling rubick v0.1.0 (/opt/rustwide/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 2.70s
[INFO] running `"docker" "inspect" "df3220cc142bca73ffae1da40079408f6642aa964176ca691a5feda1645e5ec9"`
[INFO] running `"docker" "rm" "-f" "df3220cc142bca73ffae1da40079408f6642aa964176ca691a5feda1645e5ec9"`
[INFO] [stdout] df3220cc142bca73ffae1da40079408f6642aa964176ca691a5feda1645e5ec9
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] 467e70b17ccc2721951e543fb5bc80dcd2fb59cfd5503437f454885e6c4f02ac
[INFO] running `"docker" "start" "-a" "467e70b17ccc2721951e543fb5bc80dcd2fb59cfd5503437f454885e6c4f02ac"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rubick-a47cb70e4789e746
[INFO] [stdout] 
[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_display ... ok
[INFO] [stdout] test cube::test::test_rotate_bottom_clockwise ... ok
[INFO] [stdout] test cube::test::test_rotate_back_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_front_counter_clockwise ... ok
[INFO] [stdout] test cube::test::test_rotate_right_clockwise ... ok
[INFO] [stdout] test cube::test::test_rotate_left_clockwise ... ok
[INFO] [stdout] test cube::test::test_rotate_right_counter_clockwise ... ok
[INFO] [stdout] test cube::test::test_rotate_left_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" "467e70b17ccc2721951e543fb5bc80dcd2fb59cfd5503437f454885e6c4f02ac"`
[INFO] running `"docker" "rm" "-f" "467e70b17ccc2721951e543fb5bc80dcd2fb59cfd5503437f454885e6c4f02ac"`
[INFO] [stdout] 467e70b17ccc2721951e543fb5bc80dcd2fb59cfd5503437f454885e6c4f02ac