Dec 18 16:17:01.143 INFO checking game-2048-0.5.1 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 16:17:01.143 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/game-2048/0.5.1:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 16:17:01.472 INFO [stdout] 8d7bdd03054cb76182a86362e55527f529686a461bef936fa15494cca8955663
Dec 18 16:17:01.477 INFO running `"docker" "start" "-a" "8d7bdd03054cb76182a86362e55527f529686a461bef936fa15494cca8955663"`
Dec 18 16:17:02.951 INFO [stderr]     Checking matrix_display v0.3.0
Dec 18 16:17:03.605 INFO [stderr]     Checking game-2048 v0.5.1 (/opt/crater/workdir)
Dec 18 16:17:04.429 INFO [stderr] warning: use of deprecated item 'rand::sample': renamed to seq::sample_iter
Dec 18 16:17:04.429 INFO [stderr]  --> src/board.rs:3:24
Dec 18 16:17:04.429 INFO [stderr]   |
Dec 18 16:17:04.429 INFO [stderr] 3 | use rand::{thread_rng, sample};
Dec 18 16:17:04.430 INFO [stderr]   |                        ^^^^^^
Dec 18 16:17:04.430 INFO [stderr]   |
Dec 18 16:17:04.430 INFO [stderr]   = note: #[warn(deprecated)] on by default
Dec 18 16:17:04.430 INFO [stderr] 
Dec 18 16:17:04.430 INFO [stderr] warning: use of deprecated item 'rand::sample': renamed to seq::sample_iter
Dec 18 16:17:04.430 INFO [stderr]   --> src/board.rs:57:22
Dec 18 16:17:04.430 INFO [stderr]    |
Dec 18 16:17:04.430 INFO [stderr] 57 |         let mut fw = sample(&mut rng, 1..256, 17);
Dec 18 16:17:04.430 INFO [stderr]    |                      ^^^^^^
Dec 18 16:17:04.430 INFO [stderr] 
Dec 18 16:17:04.512 INFO [stderr] warning: use of deprecated item 'rand::sample': renamed to seq::sample_iter
Dec 18 16:17:04.512 INFO [stderr]  --> src/board.rs:3:24
Dec 18 16:17:04.512 INFO [stderr]   |
Dec 18 16:17:04.512 INFO [stderr] 3 | use rand::{thread_rng, sample};
Dec 18 16:17:04.512 INFO [stderr]   |                        ^^^^^^
Dec 18 16:17:04.512 INFO [stderr]   |
Dec 18 16:17:04.512 INFO [stderr]   = note: #[warn(deprecated)] on by default
Dec 18 16:17:04.512 INFO [stderr] 
Dec 18 16:17:04.513 INFO [stderr] warning: use of deprecated item 'rand::sample': renamed to seq::sample_iter
Dec 18 16:17:04.513 INFO [stderr]   --> src/board.rs:57:22
Dec 18 16:17:04.513 INFO [stderr]    |
Dec 18 16:17:04.513 INFO [stderr] 57 |         let mut fw = sample(&mut rng, 1..256, 17);
Dec 18 16:17:04.513 INFO [stderr]    |                      ^^^^^^
Dec 18 16:17:04.513 INFO [stderr] 
Dec 18 16:17:04.684 INFO [stderr] warning: floating-point types cannot be used in patterns
Dec 18 16:17:04.685 INFO [stderr]   --> src/board.rs:22:22
Dec 18 16:17:04.685 INFO [stderr]    |
Dec 18 16:17:04.685 INFO [stderr] 22 |                      1_f64 => (".".to_string(), col),
Dec 18 16:17:04.686 INFO [stderr]    |                      ^^^^^
Dec 18 16:17:04.686 INFO [stderr]    |
Dec 18 16:17:04.686 INFO [stderr]    = note: #[warn(illegal_floating_point_literal_pattern)] on by default
Dec 18 16:17:04.687 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 18 16:17:04.687 INFO [stderr]    = note: for more information, see issue #41620 <https://github.com/rust-lang/rust/issues/41620>
Dec 18 16:17:04.687 INFO [stderr] 
Dec 18 16:17:04.724 INFO [stderr] warning: floating-point types cannot be used in patterns
Dec 18 16:17:04.725 INFO [stderr]   --> src/board.rs:22:22
Dec 18 16:17:04.725 INFO [stderr]    |
Dec 18 16:17:04.725 INFO [stderr] 22 |                      1_f64 => (".".to_string(), col),
Dec 18 16:17:04.726 INFO [stderr]    |                      ^^^^^
Dec 18 16:17:04.726 INFO [stderr]    |
Dec 18 16:17:04.726 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 18 16:17:04.726 INFO [stderr]    = note: for more information, see issue #41620 <https://github.com/rust-lang/rust/issues/41620>
Dec 18 16:17:04.727 INFO [stderr] 
Dec 18 16:17:04.776 INFO [stderr] warning: variable does not need to be mutable
Dec 18 16:17:04.777 INFO [stderr]   --> src/game.rs:70:19
Dec 18 16:17:04.777 INFO [stderr]    |
Dec 18 16:17:04.777 INFO [stderr] 70 |             .map(|mut row| {
Dec 18 16:17:04.778 INFO [stderr]    |                   ----^^^
Dec 18 16:17:04.778 INFO [stderr]    |                   |
Dec 18 16:17:04.778 INFO [stderr]    |                   help: remove this `mut`
Dec 18 16:17:04.778 INFO [stderr]    |
Dec 18 16:17:04.779 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 16:17:04.779 INFO [stderr] 
Dec 18 16:17:04.779 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 18 16:17:04.779 INFO [stderr]   --> src/game.rs:68:9
Dec 18 16:17:04.780 INFO [stderr]    |
Dec 18 16:17:04.780 INFO [stderr] 68 | /         self.data
Dec 18 16:17:04.780 INFO [stderr] 69 | |             .chunks_mut(4)
Dec 18 16:17:04.781 INFO [stderr] 70 | |             .map(|mut row| {
Dec 18 16:17:04.781 INFO [stderr] 71 | |                 let (new_row, new_score) = match dir {
Dec 18 16:17:04.781 INFO [stderr] ...  |
Dec 18 16:17:04.782 INFO [stderr] 86 | |             })
Dec 18 16:17:04.782 INFO [stderr] 87 | |             .collect::<Vec<_>>();
Dec 18 16:17:04.782 INFO [stderr]    | |_________________________________^
Dec 18 16:17:04.782 INFO [stderr]    |
Dec 18 16:17:04.783 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 16:17:04.783 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 18 16:17:04.783 INFO [stderr] 
Dec 18 16:17:04.806 INFO [stderr] warning: floating-point types cannot be used in patterns
Dec 18 16:17:04.806 INFO [stderr]   --> src/board.rs:22:22
Dec 18 16:17:04.806 INFO [stderr]    |
Dec 18 16:17:04.807 INFO [stderr] 22 |                      1_f64 => (".".to_string(), col),
Dec 18 16:17:04.807 INFO [stderr]    |                      ^^^^^
Dec 18 16:17:04.807 INFO [stderr]    |
Dec 18 16:17:04.808 INFO [stderr]    = note: #[warn(illegal_floating_point_literal_pattern)] on by default
Dec 18 16:17:04.808 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 18 16:17:04.809 INFO [stderr]    = note: for more information, see issue #41620 <https://github.com/rust-lang/rust/issues/41620>
Dec 18 16:17:04.809 INFO [stderr] 
Dec 18 16:17:04.889 INFO [stderr] warning: floating-point types cannot be used in patterns
Dec 18 16:17:04.889 INFO [stderr]   --> src/board.rs:22:22
Dec 18 16:17:04.889 INFO [stderr]    |
Dec 18 16:17:04.889 INFO [stderr] 22 |                      1_f64 => (".".to_string(), col),
Dec 18 16:17:04.889 INFO [stderr]    |                      ^^^^^
Dec 18 16:17:04.889 INFO [stderr]    |
Dec 18 16:17:04.890 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 18 16:17:04.890 INFO [stderr]    = note: for more information, see issue #41620 <https://github.com/rust-lang/rust/issues/41620>
Dec 18 16:17:04.890 INFO [stderr] 
Dec 18 16:17:04.924 INFO [stderr] warning: variable does not need to be mutable
Dec 18 16:17:04.924 INFO [stderr]   --> src/game.rs:70:19
Dec 18 16:17:04.924 INFO [stderr]    |
Dec 18 16:17:04.924 INFO [stderr] 70 |             .map(|mut row| {
Dec 18 16:17:04.924 INFO [stderr]    |                   ----^^^
Dec 18 16:17:04.925 INFO [stderr]    |                   |
Dec 18 16:17:04.925 INFO [stderr]    |                   help: remove this `mut`
Dec 18 16:17:04.925 INFO [stderr]    |
Dec 18 16:17:04.925 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 16:17:04.925 INFO [stderr] 
Dec 18 16:17:04.936 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 18 16:17:04.937 INFO [stderr]   --> src/game.rs:68:9
Dec 18 16:17:04.937 INFO [stderr]    |
Dec 18 16:17:04.937 INFO [stderr] 68 | /         self.data
Dec 18 16:17:04.937 INFO [stderr] 69 | |             .chunks_mut(4)
Dec 18 16:17:04.937 INFO [stderr] 70 | |             .map(|mut row| {
Dec 18 16:17:04.937 INFO [stderr] 71 | |                 let (new_row, new_score) = match dir {
Dec 18 16:17:04.937 INFO [stderr] ...  |
Dec 18 16:17:04.937 INFO [stderr] 86 | |             })
Dec 18 16:17:04.937 INFO [stderr] 87 | |             .collect::<Vec<_>>();
Dec 18 16:17:04.937 INFO [stderr]    | |_________________________________^
Dec 18 16:17:04.937 INFO [stderr]    |
Dec 18 16:17:04.937 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 16:17:04.937 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 18 16:17:04.937 INFO [stderr] 
Dec 18 16:17:04.993 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.16s
Dec 18 16:17:06.237 INFO running `"docker" "inspect" "8d7bdd03054cb76182a86362e55527f529686a461bef936fa15494cca8955663"`
Dec 18 16:17:06.467 INFO running `"docker" "rm" "-f" "8d7bdd03054cb76182a86362e55527f529686a461bef936fa15494cca8955663"`
Dec 18 16:17:06.796 INFO [stdout] 8d7bdd03054cb76182a86362e55527f529686a461bef936fa15494cca8955663