Nov 04 01:07:54.856 INFO checking pierrechevalier83/2048-rs against try#e740b9aa0b624fa39feb39613e76d15bdf57e594 for pr-55655
Nov 04 01:07:54.857 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55655/worker-2/try#e740b9aa0b624fa39feb39613e76d15bdf57e594:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-55655/try#e740b9aa0b624fa39feb39613e76d15bdf57e594:/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 +e740b9aa0b624fa39feb39613e76d15bdf57e594-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 04 01:07:55.307 INFO blam! 523a26d46f8da42dc43de45c9638565ca903fcd3d28a1fe064cd6badd49d01cc
Nov 04 01:07:55.315 INFO running `"docker" "start" "-a" "523a26d46f8da42dc43de45c9638565ca903fcd3d28a1fe064cd6badd49d01cc"`
Nov 04 01:07:56.639 INFO kablam! usermod: no changes
Nov 04 01:07:56.769 INFO kablam!     Checking termion v1.2.0
Nov 04 01:07:56.769 INFO kablam!     Checking num-complex v0.1.36
Nov 04 01:07:56.769 INFO kablam!     Checking matrix_display v0.3.0
Nov 04 01:07:56.770 INFO kablam!     Checking num-bigint v0.1.36
Nov 04 01:07:59.583 INFO kablam!     Checking num-rational v0.1.36
Nov 04 01:08:00.193 INFO kablam!     Checking num v0.1.37
Nov 04 01:08:00.557 INFO kablam!     Checking game-2048 v0.5.1 (/source)
Nov 04 01:08:01.643 INFO kablam! warning: unused return value of `std::iter::Iterator::collect` that must be used
Nov 04 01:08:01.643 INFO kablam!   --> src/game.rs:69:9
Nov 04 01:08:01.643 INFO kablam!    |
Nov 04 01:08:01.643 INFO kablam! 69 | /         self.data
Nov 04 01:08:01.643 INFO kablam! 70 | |             .chunks_mut(4)
Nov 04 01:08:01.643 INFO kablam! 71 | |             .map(|row| {
Nov 04 01:08:01.643 INFO kablam! 72 | |                 let (new_row, new_score) = match dir {
Nov 04 01:08:01.643 INFO kablam! ...  |
Nov 04 01:08:01.643 INFO kablam! 87 | |             })
Nov 04 01:08:01.643 INFO kablam! 88 | |             .collect::<Vec<_>>();
Nov 04 01:08:01.643 INFO kablam!    | |_________________________________^
Nov 04 01:08:01.643 INFO kablam!    |
Nov 04 01:08:01.643 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Nov 04 01:08:01.643 INFO kablam!    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Nov 04 01:08:01.643 INFO kablam! 
Nov 04 01:08:01.844 INFO kablam! warning: unused return value of `std::iter::Iterator::collect` that must be used
Nov 04 01:08:01.844 INFO kablam!   --> src/game.rs:69:9
Nov 04 01:08:01.844 INFO kablam!    |
Nov 04 01:08:01.844 INFO kablam! 69 | /         self.data
Nov 04 01:08:01.844 INFO kablam! 70 | |             .chunks_mut(4)
Nov 04 01:08:01.844 INFO kablam! 71 | |             .map(|row| {
Nov 04 01:08:01.846 INFO kablam! 72 | |                 let (new_row, new_score) = match dir {
Nov 04 01:08:01.846 INFO kablam! ...  |
Nov 04 01:08:01.846 INFO kablam! 87 | |             })
Nov 04 01:08:01.846 INFO kablam! 88 | |             .collect::<Vec<_>>();
Nov 04 01:08:01.846 INFO kablam!    | |_________________________________^
Nov 04 01:08:01.846 INFO kablam!    |
Nov 04 01:08:01.846 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Nov 04 01:08:01.847 INFO kablam!    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Nov 04 01:08:01.847 INFO kablam! 
Nov 04 01:08:01.899 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 5.23s
Nov 04 01:08:01.915 INFO kablam! su: No module specific data is present
Nov 04 01:08:03.196 INFO running `"docker" "rm" "-f" "523a26d46f8da42dc43de45c9638565ca903fcd3d28a1fe064cd6badd49d01cc"`
Nov 04 01:08:03.507 INFO blam! 523a26d46f8da42dc43de45c9638565ca903fcd3d28a1fe064cd6badd49d01cc