[INFO] updating cached repository mehalom/2048
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mehalom/2048
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mehalom/2048" "work/ex/beta-1.37-6/sources/1.36.0/gh/mehalom/2048"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/mehalom/2048'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mehalom/2048" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/mehalom/2048"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/mehalom/2048'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e801f029679d1d7ab90992a06c089fc02dd396c1
[INFO] sha for GitHub repo mehalom/2048: e801f029679d1d7ab90992a06c089fc02dd396c1
[INFO] validating manifest of mehalom/2048 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mehalom/2048 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mehalom/2048
[INFO] finished frobbing mehalom/2048
[INFO] frobbed toml for mehalom/2048 written to work/ex/beta-1.37-6/sources/1.36.0/gh/mehalom/2048/Cargo.toml
[INFO] started frobbing mehalom/2048
[INFO] finished frobbing mehalom/2048
[INFO] frobbed toml for mehalom/2048 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/mehalom/2048/Cargo.toml
[INFO] crate mehalom/2048 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing mehalom/2048 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/mehalom/2048:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 9d184865d031d2af7067bab12058b316fd9d85827ab4fe744a0d98d6f0d4de5e
[INFO] running `"docker" "start" "-a" "9d184865d031d2af7067bab12058b316fd9d85827ab4fe744a0d98d6f0d4de5e"`
[INFO] [stderr]    Compiling termion v1.5.1
[INFO] [stderr]    Compiling 2048 v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/game.rs:274:13
[INFO] [stderr]     |
[INFO] [stderr] 274 |         for mut row in &mut self.board {
[INFO] [stderr]     |             ----^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/game.rs:283:13
[INFO] [stderr]     |
[INFO] [stderr] 283 |         for mut row in &mut self.board {
[INFO] [stderr]     |             ----^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/game.rs:327:17
[INFO] [stderr]     |
[INFO] [stderr] 327 |             for mut row in &mut self.board {
[INFO] [stderr]     |                 ----^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/game.rs:384:13
[INFO] [stderr]     |
[INFO] [stderr] 384 |         for mut row in &self.board {
[INFO] [stderr]     |             ----^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/game.rs:393:13
[INFO] [stderr]     |
[INFO] [stderr] 393 |         for mut row in &self.board {
[INFO] [stderr]     |             ----^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.82s
[INFO] running `"docker" "inspect" "9d184865d031d2af7067bab12058b316fd9d85827ab4fe744a0d98d6f0d4de5e"`
[INFO] running `"docker" "rm" "-f" "9d184865d031d2af7067bab12058b316fd9d85827ab4fe744a0d98d6f0d4de5e"`
[INFO] [stdout] 9d184865d031d2af7067bab12058b316fd9d85827ab4fe744a0d98d6f0d4de5e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/mehalom/2048:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 90f61b644abbd1d04cc89acc0a2e731dd8011a3824d469c059986361c1c1ee94
[INFO] running `"docker" "start" "-a" "90f61b644abbd1d04cc89acc0a2e731dd8011a3824d469c059986361c1c1ee94"`
[INFO] [stderr]    Compiling 2048 v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/game.rs:274:13
[INFO] [stderr]     |
[INFO] [stderr] 274 |         for mut row in &mut self.board {
[INFO] [stderr]     |             ----^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/game.rs:283:13
[INFO] [stderr]     |
[INFO] [stderr] 283 |         for mut row in &mut self.board {
[INFO] [stderr]     |             ----^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/game.rs:327:17
[INFO] [stderr]     |
[INFO] [stderr] 327 |             for mut row in &mut self.board {
[INFO] [stderr]     |                 ----^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/game.rs:384:13
[INFO] [stderr]     |
[INFO] [stderr] 384 |         for mut row in &self.board {
[INFO] [stderr]     |             ----^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/game.rs:393:13
[INFO] [stderr]     |
[INFO] [stderr] 393 |         for mut row in &self.board {
[INFO] [stderr]     |             ----^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.79s
[INFO] running `"docker" "inspect" "90f61b644abbd1d04cc89acc0a2e731dd8011a3824d469c059986361c1c1ee94"`
[INFO] running `"docker" "rm" "-f" "90f61b644abbd1d04cc89acc0a2e731dd8011a3824d469c059986361c1c1ee94"`
[INFO] [stdout] 90f61b644abbd1d04cc89acc0a2e731dd8011a3824d469c059986361c1c1ee94
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/mehalom/2048:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 66659e4ffa9444ea1fdd60cd4e06345d451b3a834ddeb12d98f004aba1e351c2
[INFO] running `"docker" "start" "-a" "66659e4ffa9444ea1fdd60cd4e06345d451b3a834ddeb12d98f004aba1e351c2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stderr]      Running /opt/crater/target/debug/deps/2048-9bb7329610707e94
[INFO] [stdout] test game::tests::down ... ok
[INFO] [stdout] test game::tests::up ... ok
[INFO] [stdout] test game::tests::shift ... ok
[INFO] [stdout] test game::tests::try ... ok
[INFO] [stdout] test game::tests::right ... ok
[INFO] [stdout] test game::tests::left ... ok
[INFO] [stdout] test game::tests::print ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "66659e4ffa9444ea1fdd60cd4e06345d451b3a834ddeb12d98f004aba1e351c2"`
[INFO] running `"docker" "rm" "-f" "66659e4ffa9444ea1fdd60cd4e06345d451b3a834ddeb12d98f004aba1e351c2"`
[INFO] [stdout] 66659e4ffa9444ea1fdd60cd4e06345d451b3a834ddeb12d98f004aba1e351c2