[INFO] cloning repository https://github.com/czipperz/rubick
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/czipperz/rubick" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fczipperz%2Frubick", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fczipperz%2Frubick'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7e287b723bc2ebd94a844d9aec4c7af605dad81e
[INFO] testing czipperz/rubick against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fczipperz%2Frubick" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/czipperz/rubick on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-12/source/Cargo.toml
[INFO] crate git repo https://github.com/czipperz/rubick already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 96bb9ad8db42de02049bb6a5db6ea9f88722cff252c69e81832ae09ee17c209c
[INFO] running `Command { std: "docker" "start" "-a" "96bb9ad8db42de02049bb6a5db6ea9f88722cff252c69e81832ae09ee17c209c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "96bb9ad8db42de02049bb6a5db6ea9f88722cff252c69e81832ae09ee17c209c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96bb9ad8db42de02049bb6a5db6ea9f88722cff252c69e81832ae09ee17c209c", kill_on_drop: false }`
[INFO] [stdout] 96bb9ad8db42de02049bb6a5db6ea9f88722cff252c69e81832ae09ee17c209c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b1646f716c12ff0a1afebe4e640fd1ad8272a353ae03bde2bca6139dcb71ce2f
[INFO] running `Command { std: "docker" "start" "-a" "b1646f716c12ff0a1afebe4e640fd1ad8272a353ae03bde2bca6139dcb71ce2f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rubick v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `rotate_random`
[INFO] [stdout]    --> src/cube.rs:143:12
[INFO] [stdout]     |
[INFO] [stdout] 143 |     pub fn rotate_random(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `num_bottom_solved`
[INFO] [stdout]  --> src/predicates.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn num_bottom_solved(cube: &Cube) -> usize {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]   --> src/predicates.rs:15:10
[INFO] [stdout]    |
[INFO] [stdout] 15 |         .into_iter().filter(|x| **x).count()
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 15 |         .iter().filter(|x| **x).count()
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 7  |     8 - IntoIterator::into_iter([cube.bottom_corners[0] == Corner::new(Color::Orange, Color::Blue, Color::White),
[INFO] [stdout] 8  |          cube.bottom_corners[1] == Corner::new(Color::Orange, Color::White, Color::Green),
[INFO] [stdout] 9  |          cube.bottom_corners[2] == Corner::new(Color::Orange, Color::Green, Color::Yellow),
[INFO] [stdout] 10 |          cube.bottom_corners[3] == Corner::new(Color::Orange, Color::Yellow, Color::Blue),
[INFO] [stdout] 11 |          cube.bottom_sides[0]   == Side::new(Color::Orange, Color::White),
[INFO] [stdout] 12 |          cube.bottom_sides[1]   == Side::new(Color::Orange, Color::Green),
[INFO] [stdout]  ...
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b1646f716c12ff0a1afebe4e640fd1ad8272a353ae03bde2bca6139dcb71ce2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1646f716c12ff0a1afebe4e640fd1ad8272a353ae03bde2bca6139dcb71ce2f", kill_on_drop: false }`
[INFO] [stdout] b1646f716c12ff0a1afebe4e640fd1ad8272a353ae03bde2bca6139dcb71ce2f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 332bf76f18d678a7198a4d10043bbdd2abda620d71e2075e89e34d87e694bf66
[INFO] running `Command { std: "docker" "start" "-a" "332bf76f18d678a7198a4d10043bbdd2abda620d71e2075e89e34d87e694bf66", kill_on_drop: false }`
[INFO] [stderr]    Compiling rubick v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `rotate_random`
[INFO] [stdout]    --> src/cube.rs:143:12
[INFO] [stdout]     |
[INFO] [stdout] 143 |     pub fn rotate_random(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]   --> src/predicates.rs:15:10
[INFO] [stdout]    |
[INFO] [stdout] 15 |         .into_iter().filter(|x| **x).count()
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 15 |         .iter().filter(|x| **x).count()
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 7  |     8 - IntoIterator::into_iter([cube.bottom_corners[0] == Corner::new(Color::Orange, Color::Blue, Color::White),
[INFO] [stdout] 8  |          cube.bottom_corners[1] == Corner::new(Color::Orange, Color::White, Color::Green),
[INFO] [stdout] 9  |          cube.bottom_corners[2] == Corner::new(Color::Orange, Color::Green, Color::Yellow),
[INFO] [stdout] 10 |          cube.bottom_corners[3] == Corner::new(Color::Orange, Color::Yellow, Color::Blue),
[INFO] [stdout] 11 |          cube.bottom_sides[0]   == Side::new(Color::Orange, Color::White),
[INFO] [stdout] 12 |          cube.bottom_sides[1]   == Side::new(Color::Orange, Color::Green),
[INFO] [stdout]  ...
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `Command { std: "docker" "inspect" "332bf76f18d678a7198a4d10043bbdd2abda620d71e2075e89e34d87e694bf66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "332bf76f18d678a7198a4d10043bbdd2abda620d71e2075e89e34d87e694bf66", kill_on_drop: false }`
[INFO] [stdout] 332bf76f18d678a7198a4d10043bbdd2abda620d71e2075e89e34d87e694bf66
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 587275787dddfccb0af178c0b6ca3fe39192f87f77c60ab66364f959b3ee1a13
[INFO] running `Command { std: "docker" "start" "-a" "587275787dddfccb0af178c0b6ca3fe39192f87f77c60ab66364f959b3ee1a13", kill_on_drop: false }`
[INFO] [stderr] warning: associated function is never used: `rotate_random`
[INFO] [stderr]    --> src/cube.rs:143:12
[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 resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stderr]   --> src/predicates.rs:15:10
[INFO] [stderr]    |
[INFO] [stderr] 15 |         .into_iter().filter(|x| **x).count()
[INFO] [stderr]    |          ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stderr]    = warning: this changes meaning in Rust 2021
[INFO] [stderr]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stderr]    |
[INFO] [stderr] 15 |         .iter().filter(|x| **x).count()
[INFO] [stderr]    |          ^^^^
[INFO] [stderr] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stderr]    |
[INFO] [stderr] 7  |     8 - IntoIterator::into_iter([cube.bottom_corners[0] == Corner::new(Color::Orange, Color::Blue, Color::White),
[INFO] [stderr] 8  |          cube.bottom_corners[1] == Corner::new(Color::Orange, Color::White, Color::Green),
[INFO] [stderr] 9  |          cube.bottom_corners[2] == Corner::new(Color::Orange, Color::Green, Color::Yellow),
[INFO] [stderr] 10 |          cube.bottom_corners[3] == Corner::new(Color::Orange, Color::Yellow, Color::Blue),
[INFO] [stderr] 11 |          cube.bottom_sides[0]   == Side::new(Color::Orange, Color::White),
[INFO] [stderr] 12 |          cube.bottom_sides[1]   == Side::new(Color::Orange, Color::Green),
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: `rubick` (bin "rubick" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rubick-d08d773d32cc623d)
[INFO] [stdout] running 15 tests
[INFO] [stdout] test cube::test::rotate_back_counter_clockwise ... ok
[INFO] [stdout] test cube::test::test_rotate_bottom_clockwise ... ok
[INFO] [stdout] test cube::test::test_rotate_left_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_right_counter_clockwise ... ok
[INFO] [stdout] test cube::test::test_rotate_top_counter_clockwise ... ok
[INFO] [stdout] test cube::test::test_rotate_top_clockwise ... ok
[INFO] [stdout] test cube::test::test_rotate_front_counter_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_left_clockwise ... ok
[INFO] [stdout] test cube::test::test_rotate_back_clockwise ... ok
[INFO] [stdout] test predicates::test::test_num_bottom_solved ... ok
[INFO] [stdout] test cube::test::test_display ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "587275787dddfccb0af178c0b6ca3fe39192f87f77c60ab66364f959b3ee1a13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "587275787dddfccb0af178c0b6ca3fe39192f87f77c60ab66364f959b3ee1a13", kill_on_drop: false }`
[INFO] [stdout] 587275787dddfccb0af178c0b6ca3fe39192f87f77c60ab66364f959b3ee1a13