Dec 19 10:53:50.393 INFO checking pixlark/rust-2048 against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 10:53:50.393 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/pixlark/rust-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=forbid" "-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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 10:53:50.865 INFO [stdout] 4bd9b75bf2163b8dc1cdfb4b8eabf9a2024602be574513dbb0c1676f04dfd0a7
Dec 19 10:53:50.876 INFO running `"docker" "start" "-a" "4bd9b75bf2163b8dc1cdfb4b8eabf9a2024602be574513dbb0c1676f04dfd0a7"`
Dec 19 10:53:52.978 INFO [stderr]    Compiling game-2048 v0.1.0 (/opt/crater/workdir)
Dec 19 10:53:52.986 INFO [stderr]    Compiling sdl2-sys v0.31.0
Dec 19 10:53:52.988 INFO [stderr]     Checking rand v0.3.22
Dec 19 10:53:56.444 INFO [stderr]     Checking sdl2 v0.31.0
Dec 19 10:54:00.013 INFO [stderr] warning: unused import: `sdl2::video::WindowContext`
Dec 19 10:54:00.013 INFO [stderr]   --> src/main.rs:15:5
Dec 19 10:54:00.013 INFO [stderr]    |
Dec 19 10:54:00.013 INFO [stderr] 15 | use sdl2::video::WindowContext;
Dec 19 10:54:00.013 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 10:54:00.014 INFO [stderr]    |
Dec 19 10:54:00.014 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 19 10:54:00.014 INFO [stderr] 
Dec 19 10:54:00.060 INFO [stderr] warning: unused import: `sdl2::video::WindowContext`
Dec 19 10:54:00.060 INFO [stderr]   --> src/main.rs:15:5
Dec 19 10:54:00.060 INFO [stderr]    |
Dec 19 10:54:00.060 INFO [stderr] 15 | use sdl2::video::WindowContext;
Dec 19 10:54:00.060 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 10:54:00.060 INFO [stderr]    |
Dec 19 10:54:00.060 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 19 10:54:00.060 INFO [stderr] 
Dec 19 10:54:00.160 INFO [stderr] warning: use of deprecated item 'rand::Rng::choose': use SliceRandom::choose instead
Dec 19 10:54:00.160 INFO [stderr]    --> src/main.rs:267:32
Dec 19 10:54:00.160 INFO [stderr]     |
Dec 19 10:54:00.160 INFO [stderr] 267 |         let choice: u64 = *rng.choose(&[2, 4]).unwrap();
Dec 19 10:54:00.160 INFO [stderr]     |                                ^^^^^^
Dec 19 10:54:00.160 INFO [stderr]     |
Dec 19 10:54:00.160 INFO [stderr]     = note: #[warn(deprecated)] on by default
Dec 19 10:54:00.160 INFO [stderr] 
Dec 19 10:54:00.180 INFO [stderr] warning: unused variable: `state_stack`
Dec 19 10:54:00.180 INFO [stderr]    --> src/main.rs:306:13
Dec 19 10:54:00.180 INFO [stderr]     |
Dec 19 10:54:00.180 INFO [stderr] 306 |     let mut state_stack: Vec<Box<dyn GameState>> = Vec::new();
Dec 19 10:54:00.180 INFO [stderr]     |             ^^^^^^^^^^^ help: consider using `_state_stack` instead
Dec 19 10:54:00.180 INFO [stderr]     |
Dec 19 10:54:00.180 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 19 10:54:00.180 INFO [stderr] 
Dec 19 10:54:00.212 INFO [stderr] warning: variable does not need to be mutable
Dec 19 10:54:00.212 INFO [stderr]    --> src/main.rs:306:9
Dec 19 10:54:00.212 INFO [stderr]     |
Dec 19 10:54:00.212 INFO [stderr] 306 |     let mut state_stack: Vec<Box<dyn GameState>> = Vec::new();
Dec 19 10:54:00.212 INFO [stderr]     |         ----^^^^^^^^^^^
Dec 19 10:54:00.212 INFO [stderr]     |         |
Dec 19 10:54:00.212 INFO [stderr]     |         help: remove this `mut`
Dec 19 10:54:00.212 INFO [stderr]     |
Dec 19 10:54:00.212 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 10:54:00.212 INFO [stderr] 
Dec 19 10:54:00.215 INFO [stderr] warning: struct is never constructed: `PlayingState`
Dec 19 10:54:00.215 INFO [stderr]    --> src/main.rs:286:1
Dec 19 10:54:00.215 INFO [stderr]     |
Dec 19 10:54:00.215 INFO [stderr] 286 | struct PlayingState {
Dec 19 10:54:00.215 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^
Dec 19 10:54:00.215 INFO [stderr]     |
Dec 19 10:54:00.215 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 19 10:54:00.215 INFO [stderr] 
Dec 19 10:54:00.218 INFO [stderr] warning: type `v2` should have a camel case name such as `V2`
Dec 19 10:54:00.218 INFO [stderr]   --> src/main.rs:44:1
Dec 19 10:54:00.218 INFO [stderr]    |
Dec 19 10:54:00.218 INFO [stderr] 44 | / struct v2 {
Dec 19 10:54:00.218 INFO [stderr] 45 | |     row: i32,
Dec 19 10:54:00.218 INFO [stderr] 46 | |     column: i32,
Dec 19 10:54:00.218 INFO [stderr] 47 | | }
Dec 19 10:54:00.218 INFO [stderr]    | |_^
Dec 19 10:54:00.218 INFO [stderr]    |
Dec 19 10:54:00.218 INFO [stderr]    = note: #[warn(non_camel_case_types)] on by default
Dec 19 10:54:00.218 INFO [stderr] 
Dec 19 10:54:00.218 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 10:54:00.218 INFO [stderr]    --> src/main.rs:159:21
Dec 19 10:54:00.218 INFO [stderr]     |
Dec 19 10:54:00.218 INFO [stderr] 159 | /                     canvas.copy(
Dec 19 10:54:00.218 INFO [stderr] 160 | |                         &texture,
Dec 19 10:54:00.218 INFO [stderr] 161 | |                         None,
Dec 19 10:54:00.218 INFO [stderr] 162 | |                         Some(Rect::new(
Dec 19 10:54:00.218 INFO [stderr] ...   |
Dec 19 10:54:00.218 INFO [stderr] 167 | |                         )),
Dec 19 10:54:00.218 INFO [stderr] 168 | |                     );
Dec 19 10:54:00.218 INFO [stderr]     | |______________________^
Dec 19 10:54:00.218 INFO [stderr]     |
Dec 19 10:54:00.218 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 10:54:00.218 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 10:54:00.218 INFO [stderr] 
Dec 19 10:54:00.280 INFO [stderr] warning: use of deprecated item 'rand::Rng::choose': use SliceRandom::choose instead
Dec 19 10:54:00.280 INFO [stderr]    --> src/main.rs:267:32
Dec 19 10:54:00.280 INFO [stderr]     |
Dec 19 10:54:00.280 INFO [stderr] 267 |         let choice: u64 = *rng.choose(&[2, 4]).unwrap();
Dec 19 10:54:00.280 INFO [stderr]     |                                ^^^^^^
Dec 19 10:54:00.280 INFO [stderr]     |
Dec 19 10:54:00.280 INFO [stderr]     = note: #[warn(deprecated)] on by default
Dec 19 10:54:00.280 INFO [stderr] 
Dec 19 10:54:00.328 INFO [stderr] warning: unused variable: `state_stack`
Dec 19 10:54:00.328 INFO [stderr]    --> src/main.rs:306:13
Dec 19 10:54:00.328 INFO [stderr]     |
Dec 19 10:54:00.328 INFO [stderr] 306 |     let mut state_stack: Vec<Box<dyn GameState>> = Vec::new();
Dec 19 10:54:00.328 INFO [stderr]     |             ^^^^^^^^^^^ help: consider using `_state_stack` instead
Dec 19 10:54:00.328 INFO [stderr]     |
Dec 19 10:54:00.336 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 19 10:54:00.336 INFO [stderr] 
Dec 19 10:54:00.360 INFO [stderr] warning: variable does not need to be mutable
Dec 19 10:54:00.360 INFO [stderr]    --> src/main.rs:306:9
Dec 19 10:54:00.360 INFO [stderr]     |
Dec 19 10:54:00.360 INFO [stderr] 306 |     let mut state_stack: Vec<Box<dyn GameState>> = Vec::new();
Dec 19 10:54:00.360 INFO [stderr]     |         ----^^^^^^^^^^^
Dec 19 10:54:00.360 INFO [stderr]     |         |
Dec 19 10:54:00.360 INFO [stderr]     |         help: remove this `mut`
Dec 19 10:54:00.360 INFO [stderr]     |
Dec 19 10:54:00.360 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 10:54:00.360 INFO [stderr] 
Dec 19 10:54:00.365 INFO [stderr] warning: struct is never constructed: `PlayingState`
Dec 19 10:54:00.366 INFO [stderr]    --> src/main.rs:286:1
Dec 19 10:54:00.366 INFO [stderr]     |
Dec 19 10:54:00.366 INFO [stderr] 286 | struct PlayingState {
Dec 19 10:54:00.366 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^
Dec 19 10:54:00.366 INFO [stderr]     |
Dec 19 10:54:00.366 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 19 10:54:00.366 INFO [stderr] 
Dec 19 10:54:00.369 INFO [stderr] warning: type `v2` should have a camel case name such as `V2`
Dec 19 10:54:00.369 INFO [stderr]   --> src/main.rs:44:1
Dec 19 10:54:00.369 INFO [stderr]    |
Dec 19 10:54:00.369 INFO [stderr] 44 | / struct v2 {
Dec 19 10:54:00.369 INFO [stderr] 45 | |     row: i32,
Dec 19 10:54:00.369 INFO [stderr] 46 | |     column: i32,
Dec 19 10:54:00.369 INFO [stderr] 47 | | }
Dec 19 10:54:00.369 INFO [stderr]    | |_^
Dec 19 10:54:00.369 INFO [stderr]    |
Dec 19 10:54:00.369 INFO [stderr]    = note: #[warn(non_camel_case_types)] on by default
Dec 19 10:54:00.369 INFO [stderr] 
Dec 19 10:54:00.369 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 10:54:00.369 INFO [stderr]    --> src/main.rs:159:21
Dec 19 10:54:00.369 INFO [stderr]     |
Dec 19 10:54:00.369 INFO [stderr] 159 | /                     canvas.copy(
Dec 19 10:54:00.369 INFO [stderr] 160 | |                         &texture,
Dec 19 10:54:00.369 INFO [stderr] 161 | |                         None,
Dec 19 10:54:00.369 INFO [stderr] 162 | |                         Some(Rect::new(
Dec 19 10:54:00.369 INFO [stderr] ...   |
Dec 19 10:54:00.369 INFO [stderr] 167 | |                         )),
Dec 19 10:54:00.369 INFO [stderr] 168 | |                     );
Dec 19 10:54:00.369 INFO [stderr]     | |______________________^
Dec 19 10:54:00.369 INFO [stderr]     |
Dec 19 10:54:00.369 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 10:54:00.369 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 10:54:00.369 INFO [stderr] 
Dec 19 10:54:00.404 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.55s
Dec 19 10:54:01.266 INFO running `"docker" "inspect" "4bd9b75bf2163b8dc1cdfb4b8eabf9a2024602be574513dbb0c1676f04dfd0a7"`
Dec 19 10:54:01.556 INFO running `"docker" "rm" "-f" "4bd9b75bf2163b8dc1cdfb4b8eabf9a2024602be574513dbb0c1676f04dfd0a7"`
Dec 19 10:54:01.932 INFO [stdout] 4bd9b75bf2163b8dc1cdfb4b8eabf9a2024602be574513dbb0c1676f04dfd0a7