[INFO] updating cached repository https://github.com/kpberry/chess
[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] 246b6ec3a5c2157abdef9408d2b6dc953deb92f8
[INFO] testing kpberry/chess against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkpberry%2Fchess" "work/builds/worker-6/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kpberry/chess on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/kpberry/chess
[INFO] finished tweaking git repo https://github.com/kpberry/chess
[INFO] tweaked toml for git repo https://github.com/kpberry/chess written to work/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/kpberry/chess already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 8c537b9e6dd60085a48366b185cc29d5a150b2e4ac5f31870c10229c4feff0c1
[INFO] running `"docker" "start" "-a" "8c537b9e6dd60085a48366b185cc29d5a150b2e4ac5f31870c10229c4feff0c1"`
[INFO] [stderr]    Compiling chess v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `undo_move`
[INFO] [stderr]    --> src/main.rs:471:5
[INFO] [stderr]     |
[INFO] [stderr] 471 |     fn undo_move(&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 3.18s
[INFO] running `"docker" "inspect" "8c537b9e6dd60085a48366b185cc29d5a150b2e4ac5f31870c10229c4feff0c1"`
[INFO] running `"docker" "rm" "-f" "8c537b9e6dd60085a48366b185cc29d5a150b2e4ac5f31870c10229c4feff0c1"`
[INFO] [stdout] 8c537b9e6dd60085a48366b185cc29d5a150b2e4ac5f31870c10229c4feff0c1
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/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" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 16a530ba86a4ee9ecd3d978d43fa533fa6d906631a6b6a8b21f3f02de971d614
[INFO] running `"docker" "start" "-a" "16a530ba86a4ee9ecd3d978d43fa533fa6d906631a6b6a8b21f3f02de971d614"`
[INFO] [stderr]    Compiling chess v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `undo_move`
[INFO] [stderr]    --> src/main.rs:471:5
[INFO] [stderr]     |
[INFO] [stderr] 471 |     fn undo_move(&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 0.92s
[INFO] running `"docker" "inspect" "16a530ba86a4ee9ecd3d978d43fa533fa6d906631a6b6a8b21f3f02de971d614"`
[INFO] running `"docker" "rm" "-f" "16a530ba86a4ee9ecd3d978d43fa533fa6d906631a6b6a8b21f3f02de971d614"`
[INFO] [stdout] 16a530ba86a4ee9ecd3d978d43fa533fa6d906631a6b6a8b21f3f02de971d614
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/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" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] 7c90ab382b8afef62c17cbef7bd5abd2c9d716d31c7a94a48e7826c55e6726e2
[INFO] running `"docker" "start" "-a" "7c90ab382b8afef62c17cbef7bd5abd2c9d716d31c7a94a48e7826c55e6726e2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/chess-c04819761efb3035
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "7c90ab382b8afef62c17cbef7bd5abd2c9d716d31c7a94a48e7826c55e6726e2"`
[INFO] running `"docker" "rm" "-f" "7c90ab382b8afef62c17cbef7bd5abd2c9d716d31c7a94a48e7826c55e6726e2"`
[INFO] [stdout] 7c90ab382b8afef62c17cbef7bd5abd2c9d716d31c7a94a48e7826c55e6726e2