[INFO] updating cached repository kogai/tetris
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kogai/tetris
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kogai/tetris" "work/ex/beta-1.38-1/sources/1.37.0/gh/kogai/tetris"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/kogai/tetris'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kogai/tetris" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kogai/tetris"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kogai/tetris'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] bc9559b92ff95da9e8a4d603b6e481171f7d1d2c
[INFO] sha for GitHub repo kogai/tetris: bc9559b92ff95da9e8a4d603b6e481171f7d1d2c
[INFO] validating manifest of kogai/tetris 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 kogai/tetris 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 kogai/tetris
[INFO] finished frobbing kogai/tetris
[INFO] frobbed toml for kogai/tetris written to work/ex/beta-1.38-1/sources/1.37.0/gh/kogai/tetris/Cargo.toml
[INFO] started frobbing kogai/tetris
[INFO] finished frobbing kogai/tetris
[INFO] frobbed toml for kogai/tetris written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kogai/tetris/Cargo.toml
[INFO] crate kogai/tetris 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 kogai/tetris 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-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/kogai/tetris:/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] 4bfec95e09757bf749907f13bbe81c33acea2ade127e869f4efa8135731e95c2
[INFO] running `"docker" "start" "-a" "4bfec95e09757bf749907f13bbe81c33acea2ade127e869f4efa8135731e95c2"`
[INFO] [stderr]    Compiling tetris v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `send`
[INFO] [stderr]   --> src/command.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn send(&self, command: Command) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Left`
[INFO] [stderr]   --> src/command.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     Left,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Right`
[INFO] [stderr]   --> src/command.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     Right,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.26s
[INFO] running `"docker" "inspect" "4bfec95e09757bf749907f13bbe81c33acea2ade127e869f4efa8135731e95c2"`
[INFO] running `"docker" "rm" "-f" "4bfec95e09757bf749907f13bbe81c33acea2ade127e869f4efa8135731e95c2"`
[INFO] [stdout] 4bfec95e09757bf749907f13bbe81c33acea2ade127e869f4efa8135731e95c2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/kogai/tetris:/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] 854b3c721209c5b5c38ff50e525e2d6d41e90cad048ee16bc4da5d8c3854b807
[INFO] running `"docker" "start" "-a" "854b3c721209c5b5c38ff50e525e2d6d41e90cad048ee16bc4da5d8c3854b807"`
[INFO] [stderr]    Compiling tetris v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `send`
[INFO] [stderr]   --> src/command.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn send(&self, command: Command) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Left`
[INFO] [stderr]   --> src/command.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     Left,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Right`
[INFO] [stderr]   --> src/command.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     Right,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `"docker" "inspect" "854b3c721209c5b5c38ff50e525e2d6d41e90cad048ee16bc4da5d8c3854b807"`
[INFO] running `"docker" "rm" "-f" "854b3c721209c5b5c38ff50e525e2d6d41e90cad048ee16bc4da5d8c3854b807"`
[INFO] [stdout] 854b3c721209c5b5c38ff50e525e2d6d41e90cad048ee16bc4da5d8c3854b807
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/kogai/tetris:/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] d5c27afb976773294fa4c32d49381e506326a54d0e138bd92def42851a9aa0e7
[INFO] running `"docker" "start" "-a" "d5c27afb976773294fa4c32d49381e506326a54d0e138bd92def42851a9aa0e7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/tetris-3d2200e7db24a0e3
[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" "d5c27afb976773294fa4c32d49381e506326a54d0e138bd92def42851a9aa0e7"`
[INFO] running `"docker" "rm" "-f" "d5c27afb976773294fa4c32d49381e506326a54d0e138bd92def42851a9aa0e7"`
[INFO] [stdout] d5c27afb976773294fa4c32d49381e506326a54d0e138bd92def42851a9aa0e7