Dec 05 13:31:01.667 INFO checking game-2048-0.5.1 against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 05 13:31:01.667 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-2/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +1df97983eb2057dc6a8f7eb364e263b51ae23230-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 05 13:31:02.115 INFO [stdout] fb1f7a53274c822a41da02edd264fd663103837b697f11ac718dae1fb952f569
Dec 05 13:31:02.116 INFO running `"docker" "start" "-a" "fb1f7a53274c822a41da02edd264fd663103837b697f11ac718dae1fb952f569"`
Dec 05 13:31:03.571 INFO [stderr] usermod: no changes
Dec 05 13:31:03.704 INFO [stderr]     Checking matrix_display v0.3.0
Dec 05 13:31:04.659 INFO [stderr]     Checking game-2048 v0.5.1 (/source)
Dec 05 13:31:06.883 INFO [stderr] warning: use of deprecated item 'rand::sample': renamed to seq::sample_iter
Dec 05 13:31:06.883 INFO [stderr]  --> src/board.rs:3:24
Dec 05 13:31:06.883 INFO [stderr]   |
Dec 05 13:31:06.883 INFO [stderr] 3 | use rand::{thread_rng, sample};
Dec 05 13:31:06.883 INFO [stderr]   |                        ^^^^^^
Dec 05 13:31:06.883 INFO [stderr]   |
Dec 05 13:31:06.883 INFO [stderr]   = note: #[warn(deprecated)] on by default
Dec 05 13:31:06.883 INFO [stderr] 
Dec 05 13:31:06.891 INFO [stderr] warning: use of deprecated item 'rand::sample': renamed to seq::sample_iter
Dec 05 13:31:06.891 INFO [stderr]   --> src/board.rs:57:22
Dec 05 13:31:06.891 INFO [stderr]    |
Dec 05 13:31:06.891 INFO [stderr] 57 |         let mut fw = sample(&mut rng, 1..256, 17);
Dec 05 13:31:06.891 INFO [stderr]    |                      ^^^^^^
Dec 05 13:31:06.891 INFO [stderr] 
Dec 05 13:31:07.035 INFO [stderr] warning: floating-point types cannot be used in patterns
Dec 05 13:31:07.035 INFO [stderr]   --> src/board.rs:22:22
Dec 05 13:31:07.035 INFO [stderr]    |
Dec 05 13:31:07.035 INFO [stderr] 22 |                      1_f64 => (".".to_string(), col),
Dec 05 13:31:07.035 INFO [stderr]    |                      ^^^^^
Dec 05 13:31:07.035 INFO [stderr]    |
Dec 05 13:31:07.039 INFO [stderr]    = note: #[warn(illegal_floating_point_literal_pattern)] on by default
Dec 05 13:31:07.039 INFO [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 05 13:31:07.039 INFO [stderr]    = note: for more information, see issue #41620 <https://github.com/rust-lang/rust/issues/41620>
Dec 05 13:31:07.039 INFO [stderr] 
Dec 05 13:31:07.055 INFO [stderr] warning: floating-point types cannot be used in patterns
Dec 05 13:31:07.055 INFO [stderr]   --> src/board.rs:22:22
Dec 05 13:31:07.055 INFO [stderr]    |
Dec 05 13:31:07.055 INFO [stderr] 22 |                      1_f64 => (".".to_string(), col),
Dec 05 13:31:07.055 INFO [stderr]    |                      ^^^^^
Dec 05 13:31:07.055 INFO [stderr]    |
Dec 05 13:31:07.055 INFO [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 05 13:31:07.062 INFO [stderr]    = note: for more information, see issue #41620 <https://github.com/rust-lang/rust/issues/41620>
Dec 05 13:31:07.063 INFO [stderr] 
Dec 05 13:31:07.087 INFO [stderr] warning: variable does not need to be mutable
Dec 05 13:31:07.087 INFO [stderr]   --> src/game.rs:70:19
Dec 05 13:31:07.087 INFO [stderr]    |
Dec 05 13:31:07.087 INFO [stderr] 70 |             .map(|mut row| {
Dec 05 13:31:07.087 INFO [stderr]    |                   ----^^^
Dec 05 13:31:07.087 INFO [stderr]    |                   |
Dec 05 13:31:07.087 INFO [stderr]    |                   help: remove this `mut`
Dec 05 13:31:07.087 INFO [stderr]    |
Dec 05 13:31:07.087 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 05 13:31:07.087 INFO [stderr] 
Dec 05 13:31:07.103 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 05 13:31:07.103 INFO [stderr]   --> src/game.rs:68:9
Dec 05 13:31:07.103 INFO [stderr]    |
Dec 05 13:31:07.103 INFO [stderr] 68 | /         self.data
Dec 05 13:31:07.103 INFO [stderr] 69 | |             .chunks_mut(4)
Dec 05 13:31:07.103 INFO [stderr] 70 | |             .map(|mut row| {
Dec 05 13:31:07.103 INFO [stderr] 71 | |                 let (new_row, new_score) = match dir {
Dec 05 13:31:07.103 INFO [stderr] ...  |
Dec 05 13:31:07.103 INFO [stderr] 86 | |             })
Dec 05 13:31:07.103 INFO [stderr] 87 | |             .collect::<Vec<_>>();
Dec 05 13:31:07.103 INFO [stderr]    | |_________________________________^
Dec 05 13:31:07.103 INFO [stderr]    |
Dec 05 13:31:07.103 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 05 13:31:07.103 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 05 13:31:07.103 INFO [stderr] 
Dec 05 13:31:07.299 INFO [stderr] warning: use of deprecated item 'rand::sample': renamed to seq::sample_iter
Dec 05 13:31:07.299 INFO [stderr]  --> src/board.rs:3:24
Dec 05 13:31:07.299 INFO [stderr]   |
Dec 05 13:31:07.299 INFO [stderr] 3 | use rand::{thread_rng, sample};
Dec 05 13:31:07.299 INFO [stderr]   |                        ^^^^^^
Dec 05 13:31:07.299 INFO [stderr]   |
Dec 05 13:31:07.299 INFO [stderr]   = note: #[warn(deprecated)] on by default
Dec 05 13:31:07.299 INFO [stderr] 
Dec 05 13:31:07.299 INFO [stderr] warning: use of deprecated item 'rand::sample': renamed to seq::sample_iter
Dec 05 13:31:07.299 INFO [stderr]   --> src/board.rs:57:22
Dec 05 13:31:07.299 INFO [stderr]    |
Dec 05 13:31:07.299 INFO [stderr] 57 |         let mut fw = sample(&mut rng, 1..256, 17);
Dec 05 13:31:07.299 INFO [stderr]    |                      ^^^^^^
Dec 05 13:31:07.299 INFO [stderr] 
Dec 05 13:31:07.512 INFO [stderr] warning: floating-point types cannot be used in patterns
Dec 05 13:31:07.512 INFO [stderr]   --> src/board.rs:22:22
Dec 05 13:31:07.512 INFO [stderr]    |
Dec 05 13:31:07.512 INFO [stderr] 22 |                      1_f64 => (".".to_string(), col),
Dec 05 13:31:07.512 INFO [stderr]    |                      ^^^^^
Dec 05 13:31:07.512 INFO [stderr]    |
Dec 05 13:31:07.512 INFO [stderr]    = note: #[warn(illegal_floating_point_literal_pattern)] on by default
Dec 05 13:31:07.512 INFO [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 05 13:31:07.512 INFO [stderr]    = note: for more information, see issue #41620 <https://github.com/rust-lang/rust/issues/41620>
Dec 05 13:31:07.512 INFO [stderr] 
Dec 05 13:31:07.547 INFO [stderr] warning: floating-point types cannot be used in patterns
Dec 05 13:31:07.547 INFO [stderr]   --> src/board.rs:22:22
Dec 05 13:31:07.547 INFO [stderr]    |
Dec 05 13:31:07.547 INFO [stderr] 22 |                      1_f64 => (".".to_string(), col),
Dec 05 13:31:07.547 INFO [stderr]    |                      ^^^^^
Dec 05 13:31:07.547 INFO [stderr]    |
Dec 05 13:31:07.547 INFO [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 05 13:31:07.547 INFO [stderr]    = note: for more information, see issue #41620 <https://github.com/rust-lang/rust/issues/41620>
Dec 05 13:31:07.547 INFO [stderr] 
Dec 05 13:31:07.567 INFO [stderr] warning: variable does not need to be mutable
Dec 05 13:31:07.567 INFO [stderr]   --> src/game.rs:70:19
Dec 05 13:31:07.567 INFO [stderr]    |
Dec 05 13:31:07.567 INFO [stderr] 70 |             .map(|mut row| {
Dec 05 13:31:07.567 INFO [stderr]    |                   ----^^^
Dec 05 13:31:07.567 INFO [stderr]    |                   |
Dec 05 13:31:07.567 INFO [stderr]    |                   help: remove this `mut`
Dec 05 13:31:07.567 INFO [stderr]    |
Dec 05 13:31:07.567 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 05 13:31:07.567 INFO [stderr] 
Dec 05 13:31:07.571 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 05 13:31:07.571 INFO [stderr]   --> src/game.rs:68:9
Dec 05 13:31:07.571 INFO [stderr]    |
Dec 05 13:31:07.571 INFO [stderr] 68 | /         self.data
Dec 05 13:31:07.571 INFO [stderr] 69 | |             .chunks_mut(4)
Dec 05 13:31:07.571 INFO [stderr] 70 | |             .map(|mut row| {
Dec 05 13:31:07.571 INFO [stderr] 71 | |                 let (new_row, new_score) = match dir {
Dec 05 13:31:07.571 INFO [stderr] ...  |
Dec 05 13:31:07.571 INFO [stderr] 86 | |             })
Dec 05 13:31:07.571 INFO [stderr] 87 | |             .collect::<Vec<_>>();
Dec 05 13:31:07.571 INFO [stderr]    | |_________________________________^
Dec 05 13:31:07.571 INFO [stderr]    |
Dec 05 13:31:07.571 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 05 13:31:07.571 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 05 13:31:07.571 INFO [stderr] 
Dec 05 13:31:07.615 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.01s
Dec 05 13:31:07.619 INFO [stderr] su: No module specific data is present
Dec 05 13:31:08.413 INFO running `"docker" "inspect" "fb1f7a53274c822a41da02edd264fd663103837b697f11ac718dae1fb952f569"`
Dec 05 13:31:08.680 INFO running `"docker" "rm" "-f" "fb1f7a53274c822a41da02edd264fd663103837b697f11ac718dae1fb952f569"`
Dec 05 13:31:08.923 INFO [stdout] fb1f7a53274c822a41da02edd264fd663103837b697f11ac718dae1fb952f569