Nov 29 20:31:55.427 INFO checking pierrechevalier83/2048-rs against try#32252761328f59ccfadb1bafb8148c685bc830b3 for pr-56323
Nov 29 20:31:55.427 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-5/try#32252761328f59ccfadb1bafb8148c685bc830b3:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56323/try#32252761328f59ccfadb1bafb8148c685bc830b3:/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 +32252761328f59ccfadb1bafb8148c685bc830b3-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"`
Nov 29 20:31:56.000 INFO [stdout] a874e0cd0f310d0a267e2245c02d4de3515d84aaa19458ebfaef57cf10065bb4
Nov 29 20:31:56.003 INFO running `"docker" "start" "-a" "a874e0cd0f310d0a267e2245c02d4de3515d84aaa19458ebfaef57cf10065bb4"`
Nov 29 20:31:58.099 INFO [stderr] usermod: no changes
Nov 29 20:31:58.260 INFO [stderr]     Checking termion v1.2.0
Nov 29 20:31:58.260 INFO [stderr]     Checking num-complex v0.1.36
Nov 29 20:31:58.260 INFO [stderr]     Checking matrix_display v0.3.0
Nov 29 20:31:58.268 INFO [stderr]     Checking num-bigint v0.1.36
Nov 29 20:32:00.770 INFO [stderr]     Checking num-rational v0.1.36
Nov 29 20:32:01.326 INFO [stderr]     Checking num v0.1.37
Nov 29 20:32:01.613 INFO [stderr]     Checking game-2048 v0.5.1 (/source)
Nov 29 20:32:02.498 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Nov 29 20:32:02.498 INFO [stderr]   --> src/game.rs:69:9
Nov 29 20:32:02.498 INFO [stderr]    |
Nov 29 20:32:02.498 INFO [stderr] 69 | /         self.data
Nov 29 20:32:02.498 INFO [stderr] 70 | |             .chunks_mut(4)
Nov 29 20:32:02.498 INFO [stderr] 71 | |             .map(|row| {
Nov 29 20:32:02.498 INFO [stderr] 72 | |                 let (new_row, new_score) = match dir {
Nov 29 20:32:02.498 INFO [stderr] ...  |
Nov 29 20:32:02.498 INFO [stderr] 87 | |             })
Nov 29 20:32:02.498 INFO [stderr] 88 | |             .collect::<Vec<_>>();
Nov 29 20:32:02.498 INFO [stderr]    | |_________________________________^
Nov 29 20:32:02.498 INFO [stderr]    |
Nov 29 20:32:02.498 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 29 20:32:02.498 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Nov 29 20:32:02.498 INFO [stderr] 
Nov 29 20:32:02.881 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Nov 29 20:32:02.882 INFO [stderr]   --> src/game.rs:69:9
Nov 29 20:32:02.882 INFO [stderr]    |
Nov 29 20:32:02.882 INFO [stderr] 69 | /         self.data
Nov 29 20:32:02.882 INFO [stderr] 70 | |             .chunks_mut(4)
Nov 29 20:32:02.883 INFO [stderr] 71 | |             .map(|row| {
Nov 29 20:32:02.883 INFO [stderr] 72 | |                 let (new_row, new_score) = match dir {
Nov 29 20:32:02.883 INFO [stderr] ...  |
Nov 29 20:32:02.883 INFO [stderr] 87 | |             })
Nov 29 20:32:02.884 INFO [stderr] 88 | |             .collect::<Vec<_>>();
Nov 29 20:32:02.884 INFO [stderr]    | |_________________________________^
Nov 29 20:32:02.884 INFO [stderr]    |
Nov 29 20:32:02.884 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 29 20:32:02.885 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Nov 29 20:32:02.885 INFO [stderr] 
Nov 29 20:32:02.936 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.81s
Nov 29 20:32:02.953 INFO [stderr] su: No module specific data is present
Nov 29 20:32:04.003 INFO running `"docker" "inspect" "a874e0cd0f310d0a267e2245c02d4de3515d84aaa19458ebfaef57cf10065bb4"`
Nov 29 20:32:04.264 INFO running `"docker" "rm" "-f" "a874e0cd0f310d0a267e2245c02d4de3515d84aaa19458ebfaef57cf10065bb4"`
Nov 29 20:32:04.687 INFO [stdout] a874e0cd0f310d0a267e2245c02d4de3515d84aaa19458ebfaef57cf10065bb4