[INFO] updating cached repository mwdowns/rust_knight_game
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mwdowns/rust_knight_game
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mwdowns/rust_knight_game" "work/ex/beta-1.38-1/sources/1.37.0/gh/mwdowns/rust_knight_game"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/mwdowns/rust_knight_game'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mwdowns/rust_knight_game" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mwdowns/rust_knight_game"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mwdowns/rust_knight_game'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 70f443f89ae44509fc47e0d3a3714a7e84878e58
[INFO] sha for GitHub repo mwdowns/rust_knight_game: 70f443f89ae44509fc47e0d3a3714a7e84878e58
[INFO] validating manifest of mwdowns/rust_knight_game on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mwdowns/rust_knight_game on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mwdowns/rust_knight_game
[INFO] finished frobbing mwdowns/rust_knight_game
[INFO] frobbed toml for mwdowns/rust_knight_game written to work/ex/beta-1.38-1/sources/1.37.0/gh/mwdowns/rust_knight_game/Cargo.toml
[INFO] started frobbing mwdowns/rust_knight_game
[INFO] finished frobbing mwdowns/rust_knight_game
[INFO] frobbed toml for mwdowns/rust_knight_game written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mwdowns/rust_knight_game/Cargo.toml
[INFO] crate mwdowns/rust_knight_game already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing mwdowns/rust_knight_game against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mwdowns/rust_knight_game:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 643750f8b3576281779122da9c788f48b8a9d6bfa80d469d810a457f319f228c
[INFO] running `"docker" "start" "-a" "643750f8b3576281779122da9c788f48b8a9d6bfa80d469d810a457f319f228c"`
[INFO] [stderr]    Compiling knight_game v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: struct is never constructed: `Player`
[INFO] [stderr]  --> src/play_game.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     struct Player {
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `"docker" "inspect" "643750f8b3576281779122da9c788f48b8a9d6bfa80d469d810a457f319f228c"`
[INFO] running `"docker" "rm" "-f" "643750f8b3576281779122da9c788f48b8a9d6bfa80d469d810a457f319f228c"`
[INFO] [stdout] 643750f8b3576281779122da9c788f48b8a9d6bfa80d469d810a457f319f228c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mwdowns/rust_knight_game:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 0336a2e8ed3115f38466292f41f59d9a1fcbff832058d9e7c96e9234895feeda
[INFO] running `"docker" "start" "-a" "0336a2e8ed3115f38466292f41f59d9a1fcbff832058d9e7c96e9234895feeda"`
[INFO] [stderr]    Compiling knight_game v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: struct is never constructed: `Player`
[INFO] [stderr]  --> src/play_game.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     struct Player {
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `"docker" "inspect" "0336a2e8ed3115f38466292f41f59d9a1fcbff832058d9e7c96e9234895feeda"`
[INFO] running `"docker" "rm" "-f" "0336a2e8ed3115f38466292f41f59d9a1fcbff832058d9e7c96e9234895feeda"`
[INFO] [stdout] 0336a2e8ed3115f38466292f41f59d9a1fcbff832058d9e7c96e9234895feeda
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mwdowns/rust_knight_game:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 3330382a852dbe6b4cd3515d4e1a6c4f9fab53513c95a834aa51bea84d1bb6c4
[INFO] running `"docker" "start" "-a" "3330382a852dbe6b4cd3515d4e1a6c4f9fab53513c95a834aa51bea84d1bb6c4"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/knight_game-47f426227b430eae
[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" "3330382a852dbe6b4cd3515d4e1a6c4f9fab53513c95a834aa51bea84d1bb6c4"`
[INFO] running `"docker" "rm" "-f" "3330382a852dbe6b4cd3515d4e1a6c4f9fab53513c95a834aa51bea84d1bb6c4"`
[INFO] [stdout] 3330382a852dbe6b4cd3515d4e1a6c4f9fab53513c95a834aa51bea84d1bb6c4