[INFO] updating cached repository garrettpauls/rust2048
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/garrettpauls/rust2048
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/garrettpauls/rust2048" "work/ex/beta-1.38-1/sources/1.37.0/gh/garrettpauls/rust2048"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/garrettpauls/rust2048'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/garrettpauls/rust2048" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/garrettpauls/rust2048"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/garrettpauls/rust2048'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 64d1ea1f04c2ae355b32b3e9121ffa28685c4281
[INFO] sha for GitHub repo garrettpauls/rust2048: 64d1ea1f04c2ae355b32b3e9121ffa28685c4281
[INFO] validating manifest of garrettpauls/rust2048 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 garrettpauls/rust2048 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 garrettpauls/rust2048
[INFO] finished frobbing garrettpauls/rust2048
[INFO] frobbed toml for garrettpauls/rust2048 written to work/ex/beta-1.38-1/sources/1.37.0/gh/garrettpauls/rust2048/Cargo.toml
[INFO] started frobbing garrettpauls/rust2048
[INFO] finished frobbing garrettpauls/rust2048
[INFO] frobbed toml for garrettpauls/rust2048 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/garrettpauls/rust2048/Cargo.toml
[INFO] crate garrettpauls/rust2048 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 garrettpauls/rust2048 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/garrettpauls/rust2048:/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] 9998dc01d2f4d2997910dbe48fd0a3a6cf479911358f345500cba5d9cf0ab35f
[INFO] running `"docker" "start" "-a" "9998dc01d2f4d2997910dbe48fd0a3a6cf479911358f345500cba5d9cf0ab35f"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rand v0.5.1
[INFO] [stderr]    Compiling getch v0.2.0
[INFO] [stderr]    Compiling twentyfortyeight v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `merge`
[INFO] [stderr]   --> src/logic.rs:82:42
[INFO] [stderr]    |
[INFO] [stderr] 82 | fn shift_left(mut state: &mut GameState, merge: bool) -> bool {
[INFO] [stderr]    |                                          ^^^^^ help: consider prefixing with an underscore: `_merge`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `state`
[INFO] [stderr]    --> src/logic.rs:120:16
[INFO] [stderr]     |
[INFO] [stderr] 120 | fn shift_right(state: &mut GameState) -> bool {
[INFO] [stderr]     |                ^^^^^ help: consider prefixing with an underscore: `_state`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `state`
[INFO] [stderr]    --> src/logic.rs:124:13
[INFO] [stderr]     |
[INFO] [stderr] 124 | fn shift_up(state: &mut GameState) -> bool {
[INFO] [stderr]     |             ^^^^^ help: consider prefixing with an underscore: `_state`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `state`
[INFO] [stderr]    --> src/logic.rs:128:15
[INFO] [stderr]     |
[INFO] [stderr] 128 | fn shift_down(state: &mut GameState) -> bool {
[INFO] [stderr]     |               ^^^^^ help: consider prefixing with an underscore: `_state`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.30s
[INFO] running `"docker" "inspect" "9998dc01d2f4d2997910dbe48fd0a3a6cf479911358f345500cba5d9cf0ab35f"`
[INFO] running `"docker" "rm" "-f" "9998dc01d2f4d2997910dbe48fd0a3a6cf479911358f345500cba5d9cf0ab35f"`
[INFO] [stdout] 9998dc01d2f4d2997910dbe48fd0a3a6cf479911358f345500cba5d9cf0ab35f
[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/garrettpauls/rust2048:/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] 61577083f29953981a2af4b1328cf3363f8ff5866900fb5912347c0f9f415fa9
[INFO] running `"docker" "start" "-a" "61577083f29953981a2af4b1328cf3363f8ff5866900fb5912347c0f9f415fa9"`
[INFO] [stderr]    Compiling twentyfortyeight v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `state::*`
[INFO] [stderr]   --> src/logic.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 39 |     use state::*;
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `merge`
[INFO] [stderr]   --> src/logic.rs:82:42
[INFO] [stderr]    |
[INFO] [stderr] 82 | fn shift_left(mut state: &mut GameState, merge: bool) -> bool {
[INFO] [stderr]    |                                          ^^^^^ help: consider prefixing with an underscore: `_merge`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `state`
[INFO] [stderr]    --> src/logic.rs:120:16
[INFO] [stderr]     |
[INFO] [stderr] 120 | fn shift_right(state: &mut GameState) -> bool {
[INFO] [stderr]     |                ^^^^^ help: consider prefixing with an underscore: `_state`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `state`
[INFO] [stderr]    --> src/logic.rs:124:13
[INFO] [stderr]     |
[INFO] [stderr] 124 | fn shift_up(state: &mut GameState) -> bool {
[INFO] [stderr]     |             ^^^^^ help: consider prefixing with an underscore: `_state`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `state`
[INFO] [stderr]    --> src/logic.rs:128:15
[INFO] [stderr]     |
[INFO] [stderr] 128 | fn shift_down(state: &mut GameState) -> bool {
[INFO] [stderr]     |               ^^^^^ help: consider prefixing with an underscore: `_state`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.64s
[INFO] running `"docker" "inspect" "61577083f29953981a2af4b1328cf3363f8ff5866900fb5912347c0f9f415fa9"`
[INFO] running `"docker" "rm" "-f" "61577083f29953981a2af4b1328cf3363f8ff5866900fb5912347c0f9f415fa9"`
[INFO] [stdout] 61577083f29953981a2af4b1328cf3363f8ff5866900fb5912347c0f9f415fa9
[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/garrettpauls/rust2048:/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] fd9dc68cdb44db4dd7f7c2527b28de46710a6c8ec0eda9ec525493ca737e6c8f
[INFO] running `"docker" "start" "-a" "fd9dc68cdb44db4dd7f7c2527b28de46710a6c8ec0eda9ec525493ca737e6c8f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/twentyfortyeight-8302eed92fa3c594
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test logic::test_shift_tiles::empty ... ok
[INFO] [stdout] test logic::test_shift_tiles::left ... ok
[INFO] [stdout] test logic::test_state::in_progress_move_both ... ok
[INFO] [stdout] test logic::test_state::in_progress_move_horizontal ... ok
[INFO] [stdout] test logic::test_state::in_progress_move_vertical ... ok
[INFO] [stdout] test logic::test_state::lose ... ok
[INFO] [stdout] test logic::test_state::win ... ok
[INFO] [stdout] test state::test_display::cell_digit_four ... ok
[INFO] [stdout] test state::test_display::cell_digit_one ... ok
[INFO] [stdout] test state::test_display::cell_digit_three ... ok
[INFO] [stdout] test state::test_display::cell_digit_two ... ok
[INFO] [stdout] test state::test_display::cell_empty ... ok
[INFO] [stdout] test state::test_display::state ... ok
[INFO] [stdout] test state::test_state::get_empty_cells ... ok
[INFO] [stdout] test state::test_state::swap_cells_on_col ... ok
[INFO] [stdout] test state::test_state::swap_cells_on_row ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "fd9dc68cdb44db4dd7f7c2527b28de46710a6c8ec0eda9ec525493ca737e6c8f"`
[INFO] running `"docker" "rm" "-f" "fd9dc68cdb44db4dd7f7c2527b28de46710a6c8ec0eda9ec525493ca737e6c8f"`
[INFO] [stdout] fd9dc68cdb44db4dd7f7c2527b28de46710a6c8ec0eda9ec525493ca737e6c8f