Dec 18 16:17:01.425 INFO checking game-2048-0.5.1 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 16:17:01.425 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 16:17:01.782 INFO [stdout] 9a2e7ebc4f0bdec2dc9ed9226141f92a6585ac53912610b48dc362f3631c14a8
Dec 18 16:17:01.786 INFO running `"docker" "start" "-a" "9a2e7ebc4f0bdec2dc9ed9226141f92a6585ac53912610b48dc362f3631c14a8"`
Dec 18 16:17:03.642 INFO [stderr]     Checking matrix_display v0.3.0
Dec 18 16:17:04.227 INFO [stderr]     Checking game-2048 v0.5.1 (/opt/crater/workdir)
Dec 18 16:17:05.068 INFO [stderr] warning: use of deprecated item 'rand::sample': renamed to seq::sample_iter
Dec 18 16:17:05.068 INFO [stderr]  --> src/board.rs:3:24
Dec 18 16:17:05.068 INFO [stderr]   |
Dec 18 16:17:05.069 INFO [stderr] 3 | use rand::{thread_rng, sample};
Dec 18 16:17:05.069 INFO [stderr]   |                        ^^^^^^
Dec 18 16:17:05.069 INFO [stderr]   |
Dec 18 16:17:05.069 INFO [stderr]   = note: #[warn(deprecated)] on by default
Dec 18 16:17:05.069 INFO [stderr] 
Dec 18 16:17:05.069 INFO [stderr] warning: use of deprecated item 'rand::sample': renamed to seq::sample_iter
Dec 18 16:17:05.069 INFO [stderr]   --> src/board.rs:57:22
Dec 18 16:17:05.069 INFO [stderr]    |
Dec 18 16:17:05.069 INFO [stderr] 57 |         let mut fw = sample(&mut rng, 1..256, 17);
Dec 18 16:17:05.069 INFO [stderr]    |                      ^^^^^^
Dec 18 16:17:05.069 INFO [stderr] 
Dec 18 16:17:05.104 INFO [stderr] warning: use of deprecated item 'rand::sample': renamed to seq::sample_iter
Dec 18 16:17:05.104 INFO [stderr]  --> src/board.rs:3:24
Dec 18 16:17:05.104 INFO [stderr]   |
Dec 18 16:17:05.104 INFO [stderr] 3 | use rand::{thread_rng, sample};
Dec 18 16:17:05.104 INFO [stderr]   |                        ^^^^^^
Dec 18 16:17:05.104 INFO [stderr]   |
Dec 18 16:17:05.104 INFO [stderr]   = note: #[warn(deprecated)] on by default
Dec 18 16:17:05.104 INFO [stderr] 
Dec 18 16:17:05.112 INFO [stderr] warning: use of deprecated item 'rand::sample': renamed to seq::sample_iter
Dec 18 16:17:05.112 INFO [stderr]   --> src/board.rs:57:22
Dec 18 16:17:05.112 INFO [stderr]    |
Dec 18 16:17:05.112 INFO [stderr] 57 |         let mut fw = sample(&mut rng, 1..256, 17);
Dec 18 16:17:05.112 INFO [stderr]    |                      ^^^^^^
Dec 18 16:17:05.112 INFO [stderr] 
Dec 18 16:17:05.236 INFO [stderr] warning: floating-point types cannot be used in patterns
Dec 18 16:17:05.236 INFO [stderr]   --> src/board.rs:22:22
Dec 18 16:17:05.236 INFO [stderr]    |
Dec 18 16:17:05.236 INFO [stderr] 22 |                      1_f64 => (".".to_string(), col),
Dec 18 16:17:05.236 INFO [stderr]    |                      ^^^^^
Dec 18 16:17:05.236 INFO [stderr]    |
Dec 18 16:17:05.236 INFO [stderr]    = note: #[warn(illegal_floating_point_literal_pattern)] on by default
Dec 18 16:17:05.236 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 16:17:05.236 INFO [stderr]    = note: for more information, see issue #41620 <https://github.com/rust-lang/rust/issues/41620>
Dec 18 16:17:05.236 INFO [stderr] 
Dec 18 16:17:05.256 INFO [stderr] warning: floating-point types cannot be used in patterns
Dec 18 16:17:05.256 INFO [stderr]   --> src/board.rs:22:22
Dec 18 16:17:05.256 INFO [stderr]    |
Dec 18 16:17:05.256 INFO [stderr] 22 |                      1_f64 => (".".to_string(), col),
Dec 18 16:17:05.256 INFO [stderr]    |                      ^^^^^
Dec 18 16:17:05.256 INFO [stderr]    |
Dec 18 16:17:05.256 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 16:17:05.256 INFO [stderr]    = note: for more information, see issue #41620 <https://github.com/rust-lang/rust/issues/41620>
Dec 18 16:17:05.256 INFO [stderr] 
Dec 18 16:17:05.284 INFO [stderr] warning: variable does not need to be mutable
Dec 18 16:17:05.284 INFO [stderr]   --> src/game.rs:70:19
Dec 18 16:17:05.284 INFO [stderr]    |
Dec 18 16:17:05.284 INFO [stderr] 70 |             .map(|mut row| {
Dec 18 16:17:05.284 INFO [stderr]    |                   ----^^^
Dec 18 16:17:05.284 INFO [stderr]    |                   |
Dec 18 16:17:05.284 INFO [stderr]    |                   help: remove this `mut`
Dec 18 16:17:05.284 INFO [stderr]    |
Dec 18 16:17:05.284 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 16:17:05.284 INFO [stderr] 
Dec 18 16:17:05.284 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 18 16:17:05.284 INFO [stderr]   --> src/game.rs:68:9
Dec 18 16:17:05.284 INFO [stderr]    |
Dec 18 16:17:05.284 INFO [stderr] 68 | /         self.data
Dec 18 16:17:05.284 INFO [stderr] 69 | |             .chunks_mut(4)
Dec 18 16:17:05.284 INFO [stderr] 70 | |             .map(|mut row| {
Dec 18 16:17:05.284 INFO [stderr] 71 | |                 let (new_row, new_score) = match dir {
Dec 18 16:17:05.284 INFO [stderr] ...  |
Dec 18 16:17:05.284 INFO [stderr] 86 | |             })
Dec 18 16:17:05.284 INFO [stderr] 87 | |             .collect::<Vec<_>>();
Dec 18 16:17:05.284 INFO [stderr]    | |_________________________________^
Dec 18 16:17:05.284 INFO [stderr]    |
Dec 18 16:17:05.284 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 16:17:05.284 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 18 16:17:05.284 INFO [stderr] 
Dec 18 16:17:05.336 INFO [stderr] warning: floating-point types cannot be used in patterns
Dec 18 16:17:05.336 INFO [stderr]   --> src/board.rs:22:22
Dec 18 16:17:05.336 INFO [stderr]    |
Dec 18 16:17:05.336 INFO [stderr] 22 |                      1_f64 => (".".to_string(), col),
Dec 18 16:17:05.336 INFO [stderr]    |                      ^^^^^
Dec 18 16:17:05.344 INFO [stderr]    |
Dec 18 16:17:05.344 INFO [stderr]    = note: #[warn(illegal_floating_point_literal_pattern)] on by default
Dec 18 16:17:05.344 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 16:17:05.344 INFO [stderr]    = note: for more information, see issue #41620 <https://github.com/rust-lang/rust/issues/41620>
Dec 18 16:17:05.344 INFO [stderr] 
Dec 18 16:17:05.388 INFO [stderr] warning: floating-point types cannot be used in patterns
Dec 18 16:17:05.388 INFO [stderr]   --> src/board.rs:22:22
Dec 18 16:17:05.388 INFO [stderr]    |
Dec 18 16:17:05.388 INFO [stderr] 22 |                      1_f64 => (".".to_string(), col),
Dec 18 16:17:05.388 INFO [stderr]    |                      ^^^^^
Dec 18 16:17:05.388 INFO [stderr]    |
Dec 18 16:17:05.388 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 16:17:05.388 INFO [stderr]    = note: for more information, see issue #41620 <https://github.com/rust-lang/rust/issues/41620>
Dec 18 16:17:05.388 INFO [stderr] 
Dec 18 16:17:05.412 INFO [stderr] warning: variable does not need to be mutable
Dec 18 16:17:05.412 INFO [stderr]   --> src/game.rs:70:19
Dec 18 16:17:05.412 INFO [stderr]    |
Dec 18 16:17:05.412 INFO [stderr] 70 |             .map(|mut row| {
Dec 18 16:17:05.412 INFO [stderr]    |                   ----^^^
Dec 18 16:17:05.412 INFO [stderr]    |                   |
Dec 18 16:17:05.412 INFO [stderr]    |                   help: remove this `mut`
Dec 18 16:17:05.412 INFO [stderr]    |
Dec 18 16:17:05.412 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 16:17:05.412 INFO [stderr] 
Dec 18 16:17:05.424 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 18 16:17:05.424 INFO [stderr]   --> src/game.rs:68:9
Dec 18 16:17:05.424 INFO [stderr]    |
Dec 18 16:17:05.424 INFO [stderr] 68 | /         self.data
Dec 18 16:17:05.424 INFO [stderr] 69 | |             .chunks_mut(4)
Dec 18 16:17:05.424 INFO [stderr] 70 | |             .map(|mut row| {
Dec 18 16:17:05.424 INFO [stderr] 71 | |                 let (new_row, new_score) = match dir {
Dec 18 16:17:05.424 INFO [stderr] ...  |
Dec 18 16:17:05.424 INFO [stderr] 86 | |             })
Dec 18 16:17:05.424 INFO [stderr] 87 | |             .collect::<Vec<_>>();
Dec 18 16:17:05.424 INFO [stderr]    | |_________________________________^
Dec 18 16:17:05.424 INFO [stderr]    |
Dec 18 16:17:05.424 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 16:17:05.424 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 18 16:17:05.424 INFO [stderr] 
Dec 18 16:17:05.465 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.94s
Dec 18 16:17:06.556 INFO running `"docker" "inspect" "9a2e7ebc4f0bdec2dc9ed9226141f92a6585ac53912610b48dc362f3631c14a8"`
Dec 18 16:17:06.832 INFO running `"docker" "rm" "-f" "9a2e7ebc4f0bdec2dc9ed9226141f92a6585ac53912610b48dc362f3631c14a8"`
Dec 18 16:17:07.068 INFO [stdout] 9a2e7ebc4f0bdec2dc9ed9226141f92a6585ac53912610b48dc362f3631c14a8