[INFO] updating cached repository https://github.com/seven1m/puzzlecube
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/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] 2adfd500b7f3d1c9031866a7f21f2649aff24b61
[INFO] checking seven1m/puzzlecube against master#c9edc02e8320a9e5799d185910ece7d491f524e6 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseven1m%2Fpuzzlecube" "work/builds/worker-2/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/seven1m/puzzlecube on toolchain c9edc02e8320a9e5799d185910ece7d491f524e6-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/seven1m/puzzlecube
[INFO] finished tweaking git repo https://github.com/seven1m/puzzlecube
[INFO] tweaked toml for git repo https://github.com/seven1m/puzzlecube written to work/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/seven1m/puzzlecube already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/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=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" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 1ff7a83992ff6f124fdecc6f456c19ead3bc10ed03c2bcecc6cdf5ad9f68c31c
[INFO] running `"docker" "start" "-a" "1ff7a83992ff6f124fdecc6f456c19ead3bc10ed03c2bcecc6cdf5ad9f68c31c"`
[INFO] [stderr]     Checking puzzlecube v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `cube::*`
[INFO] [stderr]  --> src/tests.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use cube::*;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new_with_test_pattern`
[INFO] [stderr]   --> src/cube.rs:83:5
[INFO] [stderr]    |
[INFO] [stderr] 83 |     pub fn new_with_test_pattern() -> Cube {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `up_color`
[INFO] [stderr]   --> src/cube.rs:97:5
[INFO] [stderr]    |
[INFO] [stderr] 97 |     pub fn up_color(&self) -> Color {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `down_color`
[INFO] [stderr]    --> src/cube.rs:101:5
[INFO] [stderr]     |
[INFO] [stderr] 101 |     pub fn down_color(&self) -> Color {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `front_color`
[INFO] [stderr]    --> src/cube.rs:112:5
[INFO] [stderr]     |
[INFO] [stderr] 112 |     pub fn front_color(&self) -> Color {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `back_color`
[INFO] [stderr]    --> src/cube.rs:116:5
[INFO] [stderr]     |
[INFO] [stderr] 116 |     pub fn back_color(&self) -> Color {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `left_color`
[INFO] [stderr]    --> src/cube.rs:127:5
[INFO] [stderr]     |
[INFO] [stderr] 127 |     pub fn left_color(&self) -> Color {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `right_color`
[INFO] [stderr]    --> src/cube.rs:186:5
[INFO] [stderr]     |
[INFO] [stderr] 186 |     pub fn right_color(&self) -> Color {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scramble`
[INFO] [stderr]    --> src/cube.rs:401:5
[INFO] [stderr]     |
[INFO] [stderr] 401 |     pub fn scramble(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `orient`
[INFO] [stderr]    --> src/cube.rs:434:5
[INFO] [stderr]     |
[INFO] [stderr] 434 |     pub fn orient(&mut self, up: Color, front: Color) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.94s
[INFO] running `"docker" "inspect" "1ff7a83992ff6f124fdecc6f456c19ead3bc10ed03c2bcecc6cdf5ad9f68c31c"`
[INFO] running `"docker" "rm" "-f" "1ff7a83992ff6f124fdecc6f456c19ead3bc10ed03c2bcecc6cdf5ad9f68c31c"`
[INFO] [stdout] 1ff7a83992ff6f124fdecc6f456c19ead3bc10ed03c2bcecc6cdf5ad9f68c31c