[INFO] updating cached repository https://github.com/peter-wilkins-mayden/eight-puzzle
[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] 7f4028533ac5b684fb947203f379eb48b1d86bec
[INFO] testing peter-wilkins-mayden/eight-puzzle against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpeter-wilkins-mayden%2Feight-puzzle" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/peter-wilkins-mayden/eight-puzzle 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/peter-wilkins-mayden/eight-puzzle
[INFO] finished tweaking git repo https://github.com/peter-wilkins-mayden/eight-puzzle
[INFO] tweaked toml for git repo https://github.com/peter-wilkins-mayden/eight-puzzle written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/peter-wilkins-mayden/eight-puzzle 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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 5ebfea6d1660e968c46ca2ce597aeaa901aaecbf4a7dbb158575df3fe7a4b55a
[INFO] running `"docker" "start" "-a" "5ebfea6d1660e968c46ca2ce597aeaa901aaecbf4a7dbb158575df3fe7a4b55a"`
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling itertools v0.8.0
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling eight-puzzle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `hamming`
[INFO] [stderr]   --> src/main.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn hamming(&self) -> i32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_solvable`
[INFO] [stderr]   --> src/main.rs:89:5
[INFO] [stderr]    |
[INFO] [stderr] 89 |     fn is_solvable(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.41s
[INFO] running `"docker" "inspect" "5ebfea6d1660e968c46ca2ce597aeaa901aaecbf4a7dbb158575df3fe7a4b55a"`
[INFO] running `"docker" "rm" "-f" "5ebfea6d1660e968c46ca2ce597aeaa901aaecbf4a7dbb158575df3fe7a4b55a"`
[INFO] [stdout] 5ebfea6d1660e968c46ca2ce597aeaa901aaecbf4a7dbb158575df3fe7a4b55a
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] dc16392ec95fc263c501ad98dd2393fc05e71a2d3ed06c8f115931bc24cd59a1
[INFO] running `"docker" "start" "-a" "dc16392ec95fc263c501ad98dd2393fc05e71a2d3ed06c8f115931bc24cd59a1"`
[INFO] [stderr]    Compiling eight-puzzle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.64s
[INFO] running `"docker" "inspect" "dc16392ec95fc263c501ad98dd2393fc05e71a2d3ed06c8f115931bc24cd59a1"`
[INFO] running `"docker" "rm" "-f" "dc16392ec95fc263c501ad98dd2393fc05e71a2d3ed06c8f115931bc24cd59a1"`
[INFO] [stdout] dc16392ec95fc263c501ad98dd2393fc05e71a2d3ed06c8f115931bc24cd59a1
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 05c0cf0d7e633ce1fd58602ad0a80fa29058a26e6d0c63c7d4f8caaec159fe6d
[INFO] running `"docker" "start" "-a" "05c0cf0d7e633ce1fd58602ad0a80fa29058a26e6d0c63c7d4f8caaec159fe6d"`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/eight_puzzle-46b2f62114d67a3c
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test test_neighbours ... ok
[INFO] [stdout] test test_heap_one_iteration ... ok
[INFO] [stdout] test test_ordering ... ok
[INFO] [stdout] test test_manhatten ... ok
[INFO] [stdout] test test_heap ... ok
[INFO] [stdout] test test_goal ... ok
[INFO] [stdout] test test_hamming ... ok
[INFO] [stdout] test test_solution ... ok
[INFO] [stdout] test test_is_solvable ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "05c0cf0d7e633ce1fd58602ad0a80fa29058a26e6d0c63c7d4f8caaec159fe6d"`
[INFO] running `"docker" "rm" "-f" "05c0cf0d7e633ce1fd58602ad0a80fa29058a26e6d0c63c7d4f8caaec159fe6d"`
[INFO] [stdout] 05c0cf0d7e633ce1fd58602ad0a80fa29058a26e6d0c63c7d4f8caaec159fe6d