Dec 12 14:42:14.775 INFO checking game-2048-0.5.1 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 14:42:14.775 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-2/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 12 14:42:15.158 INFO [stdout] 3720b73238b65dbffcefbc5dad6a2d4dff6288884d835c752781cb5123056c07
Dec 12 14:42:15.160 INFO running `"docker" "start" "-a" "3720b73238b65dbffcefbc5dad6a2d4dff6288884d835c752781cb5123056c07"`
Dec 12 14:42:17.408 INFO [stderr] usermod: no changes
Dec 12 14:42:17.624 INFO [stderr]     Checking matrix_display v0.3.0
Dec 12 14:42:18.830 INFO [stderr]     Checking game-2048 v0.5.1 (/source)
Dec 12 14:42:21.173 INFO [stderr] warning: use of deprecated item 'rand::sample': renamed to seq::sample_iter
Dec 12 14:42:21.173 INFO [stderr]  --> src/board.rs:3:24
Dec 12 14:42:21.173 INFO [stderr]   |
Dec 12 14:42:21.173 INFO [stderr] 3 | use rand::{thread_rng, sample};
Dec 12 14:42:21.173 INFO [stderr]   |                        ^^^^^^
Dec 12 14:42:21.173 INFO [stderr]   |
Dec 12 14:42:21.173 INFO [stderr]   = note: #[warn(deprecated)] on by default
Dec 12 14:42:21.173 INFO [stderr] 
Dec 12 14:42:21.173 INFO [stderr] warning: use of deprecated item 'rand::sample': renamed to seq::sample_iter
Dec 12 14:42:21.173 INFO [stderr]   --> src/board.rs:57:22
Dec 12 14:42:21.173 INFO [stderr]    |
Dec 12 14:42:21.173 INFO [stderr] 57 |         let mut fw = sample(&mut rng, 1..256, 17);
Dec 12 14:42:21.173 INFO [stderr]    |                      ^^^^^^
Dec 12 14:42:21.173 INFO [stderr] 
Dec 12 14:42:21.340 INFO [stderr] warning: floating-point types cannot be used in patterns
Dec 12 14:42:21.340 INFO [stderr]   --> src/board.rs:22:22
Dec 12 14:42:21.341 INFO [stderr]    |
Dec 12 14:42:21.341 INFO [stderr] 22 |                      1_f64 => (".".to_string(), col),
Dec 12 14:42:21.341 INFO [stderr]    |                      ^^^^^
Dec 12 14:42:21.342 INFO [stderr]    |
Dec 12 14:42:21.342 INFO [stderr]    = note: #[warn(illegal_floating_point_literal_pattern)] on by default
Dec 12 14:42:21.342 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 12 14:42:21.342 INFO [stderr]    = note: for more information, see issue #41620 <https://github.com/rust-lang/rust/issues/41620>
Dec 12 14:42:21.348 INFO [stderr] 
Dec 12 14:42:21.364 INFO [stderr] warning: floating-point types cannot be used in patterns
Dec 12 14:42:21.364 INFO [stderr]   --> src/board.rs:22:22
Dec 12 14:42:21.365 INFO [stderr]    |
Dec 12 14:42:21.365 INFO [stderr] 22 |                      1_f64 => (".".to_string(), col),
Dec 12 14:42:21.365 INFO [stderr]    |                      ^^^^^
Dec 12 14:42:21.365 INFO [stderr]    |
Dec 12 14:42:21.372 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 12 14:42:21.372 INFO [stderr]    = note: for more information, see issue #41620 <https://github.com/rust-lang/rust/issues/41620>
Dec 12 14:42:21.372 INFO [stderr] 
Dec 12 14:42:21.391 INFO [stderr] warning: variable does not need to be mutable
Dec 12 14:42:21.391 INFO [stderr]   --> src/game.rs:70:19
Dec 12 14:42:21.392 INFO [stderr]    |
Dec 12 14:42:21.392 INFO [stderr] 70 |             .map(|mut row| {
Dec 12 14:42:21.392 INFO [stderr]    |                   ----^^^
Dec 12 14:42:21.392 INFO [stderr]    |                   |
Dec 12 14:42:21.392 INFO [stderr]    |                   help: remove this `mut`
Dec 12 14:42:21.396 INFO [stderr]    |
Dec 12 14:42:21.396 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 14:42:21.396 INFO [stderr] 
Dec 12 14:42:21.404 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 12 14:42:21.404 INFO [stderr]   --> src/game.rs:68:9
Dec 12 14:42:21.405 INFO [stderr]    |
Dec 12 14:42:21.405 INFO [stderr] 68 | /         self.data
Dec 12 14:42:21.405 INFO [stderr] 69 | |             .chunks_mut(4)
Dec 12 14:42:21.405 INFO [stderr] 70 | |             .map(|mut row| {
Dec 12 14:42:21.406 INFO [stderr] 71 | |                 let (new_row, new_score) = match dir {
Dec 12 14:42:21.406 INFO [stderr] ...  |
Dec 12 14:42:21.406 INFO [stderr] 86 | |             })
Dec 12 14:42:21.406 INFO [stderr] 87 | |             .collect::<Vec<_>>();
Dec 12 14:42:21.406 INFO [stderr]    | |_________________________________^
Dec 12 14:42:21.407 INFO [stderr] warning: use of deprecated item 'rand::sample': renamed to seq::sample_iter
Dec 12 14:42:21.407 INFO [stderr]  --> src/board.rs:3:24
Dec 12 14:42:21.407 INFO [stderr]   |
Dec 12 14:42:21.407 INFO [stderr] 3 | use rand::{thread_rng, sample};
Dec 12 14:42:21.407 INFO [stderr]   |                        ^^^^^^
Dec 12 14:42:21.407 INFO [stderr]   |
Dec 12 14:42:21.407 INFO [stderr]   = note: #[warn(deprecated)] on by default
Dec 12 14:42:21.407 INFO [stderr] 
Dec 12 14:42:21.407 INFO [stderr]    |
Dec 12 14:42:21.407 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 14:42:21.407 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 12 14:42:21.407 INFO [stderr] 
Dec 12 14:42:21.407 INFO [stderr] warning: use of deprecated item 'rand::sample': renamed to seq::sample_iter
Dec 12 14:42:21.407 INFO [stderr]   --> src/board.rs:57:22
Dec 12 14:42:21.407 INFO [stderr]    |
Dec 12 14:42:21.407 INFO [stderr] 57 |         let mut fw = sample(&mut rng, 1..256, 17);
Dec 12 14:42:21.407 INFO [stderr]    |                      ^^^^^^
Dec 12 14:42:21.407 INFO [stderr] 
Dec 12 14:42:21.666 INFO [stderr] warning: floating-point types cannot be used in patterns
Dec 12 14:42:21.666 INFO [stderr]   --> src/board.rs:22:22
Dec 12 14:42:21.666 INFO [stderr]    |
Dec 12 14:42:21.666 INFO [stderr] 22 |                      1_f64 => (".".to_string(), col),
Dec 12 14:42:21.666 INFO [stderr]    |                      ^^^^^
Dec 12 14:42:21.666 INFO [stderr]    |
Dec 12 14:42:21.666 INFO [stderr]    = note: #[warn(illegal_floating_point_literal_pattern)] on by default
Dec 12 14:42:21.666 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 12 14:42:21.666 INFO [stderr]    = note: for more information, see issue #41620 <https://github.com/rust-lang/rust/issues/41620>
Dec 12 14:42:21.666 INFO [stderr] 
Dec 12 14:42:21.750 INFO [stderr] warning: floating-point types cannot be used in patterns
Dec 12 14:42:21.750 INFO [stderr]   --> src/board.rs:22:22
Dec 12 14:42:21.750 INFO [stderr]    |
Dec 12 14:42:21.750 INFO [stderr] 22 |                      1_f64 => (".".to_string(), col),
Dec 12 14:42:21.750 INFO [stderr]    |                      ^^^^^
Dec 12 14:42:21.750 INFO [stderr]    |
Dec 12 14:42:21.750 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 12 14:42:21.750 INFO [stderr]    = note: for more information, see issue #41620 <https://github.com/rust-lang/rust/issues/41620>
Dec 12 14:42:21.750 INFO [stderr] 
Dec 12 14:42:21.767 INFO [stderr] warning: variable does not need to be mutable
Dec 12 14:42:21.767 INFO [stderr]   --> src/game.rs:70:19
Dec 12 14:42:21.767 INFO [stderr]    |
Dec 12 14:42:21.767 INFO [stderr] 70 |             .map(|mut row| {
Dec 12 14:42:21.767 INFO [stderr]    |                   ----^^^
Dec 12 14:42:21.767 INFO [stderr]    |                   |
Dec 12 14:42:21.767 INFO [stderr]    |                   help: remove this `mut`
Dec 12 14:42:21.767 INFO [stderr]    |
Dec 12 14:42:21.767 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 14:42:21.767 INFO [stderr] 
Dec 12 14:42:21.776 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 12 14:42:21.776 INFO [stderr]   --> src/game.rs:68:9
Dec 12 14:42:21.777 INFO [stderr]    |
Dec 12 14:42:21.777 INFO [stderr] 68 | /         self.data
Dec 12 14:42:21.777 INFO [stderr] 69 | |             .chunks_mut(4)
Dec 12 14:42:21.777 INFO [stderr] 70 | |             .map(|mut row| {
Dec 12 14:42:21.777 INFO [stderr] 71 | |                 let (new_row, new_score) = match dir {
Dec 12 14:42:21.777 INFO [stderr] ...  |
Dec 12 14:42:21.777 INFO [stderr] 86 | |             })
Dec 12 14:42:21.777 INFO [stderr] 87 | |             .collect::<Vec<_>>();
Dec 12 14:42:21.777 INFO [stderr]    | |_________________________________^
Dec 12 14:42:21.777 INFO [stderr]    |
Dec 12 14:42:21.777 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 14:42:21.777 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 12 14:42:21.777 INFO [stderr] 
Dec 12 14:42:21.821 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.37s
Dec 12 14:42:21.821 INFO [stderr] su: No module specific data is present
Dec 12 14:42:22.875 INFO running `"docker" "inspect" "3720b73238b65dbffcefbc5dad6a2d4dff6288884d835c752781cb5123056c07"`
Dec 12 14:42:23.214 INFO running `"docker" "rm" "-f" "3720b73238b65dbffcefbc5dad6a2d4dff6288884d835c752781cb5123056c07"`
Dec 12 14:42:23.578 INFO [stdout] 3720b73238b65dbffcefbc5dad6a2d4dff6288884d835c752781cb5123056c07