[INFO] updating cached repository https://github.com/czipperz/rubick
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/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 master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fczipperz%2Frubick" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/czipperz/rubick on toolchain 28742a1146f10a4f09369baad027a464acb7a766
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "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 /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/czipperz/rubick already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9460e3042ffceca29902285cf42c74ce96331c275cf6c9866a305b150a570493
[INFO] running `"docker" "start" "-a" "9460e3042ffceca29902285cf42c74ce96331c275cf6c9866a305b150a570493"`
[INFO] [stderr]    Compiling libc v0.2.36
[INFO] [stderr]    Compiling rand v0.4.2
[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:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn num_bottom_solved(cube: &Cube) -> usize {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stderr]   --> src/predicates.rs:15:10
[INFO] [stderr]    |
[INFO] [stderr] 15 |         .into_iter().filter(|x| **x).count()
[INFO] [stderr]    |          ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.97s
[INFO] running `"docker" "inspect" "9460e3042ffceca29902285cf42c74ce96331c275cf6c9866a305b150a570493"`
[INFO] running `"docker" "rm" "-f" "9460e3042ffceca29902285cf42c74ce96331c275cf6c9866a305b150a570493"`
[INFO] [stdout] 9460e3042ffceca29902285cf42c74ce96331c275cf6c9866a305b150a570493
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0028b2206606bfcb5d9cdda92546362d981afa241f5cd359eedaec93d6ad7a17
[INFO] running `"docker" "start" "-a" "0028b2206606bfcb5d9cdda92546362d981afa241f5cd359eedaec93d6ad7a17"`
[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: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stderr]   --> src/predicates.rs:15:10
[INFO] [stderr]    |
[INFO] [stderr] 15 |         .into_iter().filter(|x| **x).count()
[INFO] [stderr]    |          ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.35s
[INFO] running `"docker" "inspect" "0028b2206606bfcb5d9cdda92546362d981afa241f5cd359eedaec93d6ad7a17"`
[INFO] running `"docker" "rm" "-f" "0028b2206606bfcb5d9cdda92546362d981afa241f5cd359eedaec93d6ad7a17"`
[INFO] [stdout] 0028b2206606bfcb5d9cdda92546362d981afa241f5cd359eedaec93d6ad7a17
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e36b7922ddb5674f4d1891ea80654625c92fdc496cd445ed95c4cd7071517dd6
[INFO] running `"docker" "start" "-a" "e36b7922ddb5674f4d1891ea80654625c92fdc496cd445ed95c4cd7071517dd6"`
[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: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stderr]   --> src/predicates.rs:15:10
[INFO] [stderr]    |
[INFO] [stderr] 15 |         .into_iter().filter(|x| **x).count()
[INFO] [stderr]    |          ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rubick-90a21675e32f36ce
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test cube::test::rotate_back_counter_clockwise ... ok
[INFO] [stdout] test cube::test::test_rotate_left_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_new ... ok
[INFO] [stdout] test cube::test::test_rotate_bottom_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] 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] test cube::test::test_rotate_back_clockwise ... ok
[INFO] [stdout] test cube::test::test_rotate_bottom_clockwise ... ok
[INFO] [stdout] test cube::test::test_display ... ok
[INFO] [stdout] test cube::test::test_rotate_left_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" "e36b7922ddb5674f4d1891ea80654625c92fdc496cd445ed95c4cd7071517dd6"`
[INFO] running `"docker" "rm" "-f" "e36b7922ddb5674f4d1891ea80654625c92fdc496cd445ed95c4cd7071517dd6"`
[INFO] [stdout] e36b7922ddb5674f4d1891ea80654625c92fdc496cd445ed95c4cd7071517dd6