[INFO] updating cached repository FeliciousX/tetrimino-solver
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/FeliciousX/tetrimino-solver
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/FeliciousX/tetrimino-solver" "work/ex/beta-1.38-1/sources/1.37.0/gh/FeliciousX/tetrimino-solver"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/FeliciousX/tetrimino-solver'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/FeliciousX/tetrimino-solver" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/FeliciousX/tetrimino-solver"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/FeliciousX/tetrimino-solver'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 25d278f95be7e88f8bd10e067c82dd5e4abc299e
[INFO] sha for GitHub repo FeliciousX/tetrimino-solver: 25d278f95be7e88f8bd10e067c82dd5e4abc299e
[INFO] validating manifest of FeliciousX/tetrimino-solver 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 FeliciousX/tetrimino-solver 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 FeliciousX/tetrimino-solver
[INFO] finished frobbing FeliciousX/tetrimino-solver
[INFO] frobbed toml for FeliciousX/tetrimino-solver written to work/ex/beta-1.38-1/sources/1.37.0/gh/FeliciousX/tetrimino-solver/Cargo.toml
[INFO] started frobbing FeliciousX/tetrimino-solver
[INFO] finished frobbing FeliciousX/tetrimino-solver
[INFO] frobbed toml for FeliciousX/tetrimino-solver written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/FeliciousX/tetrimino-solver/Cargo.toml
[INFO] crate FeliciousX/tetrimino-solver 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 FeliciousX/tetrimino-solver against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/FeliciousX/tetrimino-solver:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] db2287e1b6aea506eaf89b38af20220f8557c28be113960558188a79dda1361c
[INFO] running `"docker" "start" "-a" "db2287e1b6aea506eaf89b38af20220f8557c28be113960558188a79dda1361c"`
[INFO] [stderr]    Compiling tetrimino v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `coordinate`
[INFO] [stderr]   --> src/main.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let coordinate = coordinate::Coordinate::new(3, 4);
[INFO] [stderr]    |         ^^^^^^^^^^ help: consider prefixing with an underscore: `_coordinate`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `"docker" "inspect" "db2287e1b6aea506eaf89b38af20220f8557c28be113960558188a79dda1361c"`
[INFO] running `"docker" "rm" "-f" "db2287e1b6aea506eaf89b38af20220f8557c28be113960558188a79dda1361c"`
[INFO] [stdout] db2287e1b6aea506eaf89b38af20220f8557c28be113960558188a79dda1361c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/FeliciousX/tetrimino-solver:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 55ecd478785ab70e22eb62ea14025499cf70f2b1f04ca0bb2cd2ffd4f8afb2e9
[INFO] running `"docker" "start" "-a" "55ecd478785ab70e22eb62ea14025499cf70f2b1f04ca0bb2cd2ffd4f8afb2e9"`
[INFO] [stderr]    Compiling tetrimino v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `coordinate`
[INFO] [stderr]   --> src/main.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let coordinate = coordinate::Coordinate::new(3, 4);
[INFO] [stderr]    |         ^^^^^^^^^^ help: consider prefixing with an underscore: `_coordinate`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `"docker" "inspect" "55ecd478785ab70e22eb62ea14025499cf70f2b1f04ca0bb2cd2ffd4f8afb2e9"`
[INFO] running `"docker" "rm" "-f" "55ecd478785ab70e22eb62ea14025499cf70f2b1f04ca0bb2cd2ffd4f8afb2e9"`
[INFO] [stdout] 55ecd478785ab70e22eb62ea14025499cf70f2b1f04ca0bb2cd2ffd4f8afb2e9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/FeliciousX/tetrimino-solver:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] b41c23247762b85d06c15c4cab7f9cf7ed04176efaa67e5b88f96e744f1df01a
[INFO] running `"docker" "start" "-a" "b41c23247762b85d06c15c4cab7f9cf7ed04176efaa67e5b88f96e744f1df01a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/tetrimino-881d297b3d6160f6
[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" "b41c23247762b85d06c15c4cab7f9cf7ed04176efaa67e5b88f96e744f1df01a"`
[INFO] running `"docker" "rm" "-f" "b41c23247762b85d06c15c4cab7f9cf7ed04176efaa67e5b88f96e744f1df01a"`
[INFO] [stdout] b41c23247762b85d06c15c4cab7f9cf7ed04176efaa67e5b88f96e744f1df01a