Nov 29 20:32:04.765 INFO checking pierrechevalier83/2048-rs against master#a49316ddc99d9d595193557fc899f6c52e4d9af9 for pr-56323
Nov 29 20:32:04.766 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-5/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56323/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/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 +a49316ddc99d9d595193557fc899f6c52e4d9af9-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 20:32:05.259 INFO [stdout] c6227b41439c05deb72d5399c7bc31377650bd77a1c848da4a8cf838220dcf24
Nov 29 20:32:05.262 INFO running `"docker" "start" "-a" "c6227b41439c05deb72d5399c7bc31377650bd77a1c848da4a8cf838220dcf24"`
Nov 29 20:32:06.793 INFO [stderr] usermod: no changes
Nov 29 20:32:06.933 INFO [stderr]     Checking termion v1.2.0
Nov 29 20:32:06.933 INFO [stderr]     Checking num-complex v0.1.36
Nov 29 20:32:06.933 INFO [stderr]     Checking matrix_display v0.3.0
Nov 29 20:32:06.956 INFO [stderr]     Checking num-bigint v0.1.36
Nov 29 20:32:09.092 INFO [stderr]     Checking num-rational v0.1.36
Nov 29 20:32:09.704 INFO [stderr]     Checking num v0.1.37
Nov 29 20:32:09.988 INFO [stderr]     Checking game-2048 v0.5.1 (/source)
Nov 29 20:32:10.544 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Nov 29 20:32:10.544 INFO [stderr]   --> src/game.rs:69:9
Nov 29 20:32:10.544 INFO [stderr]    |
Nov 29 20:32:10.544 INFO [stderr] 69 | /         self.data
Nov 29 20:32:10.544 INFO [stderr] 70 | |             .chunks_mut(4)
Nov 29 20:32:10.544 INFO [stderr] 71 | |             .map(|row| {
Nov 29 20:32:10.544 INFO [stderr] 72 | |                 let (new_row, new_score) = match dir {
Nov 29 20:32:10.544 INFO [stderr] ...  |
Nov 29 20:32:10.544 INFO [stderr] 87 | |             })
Nov 29 20:32:10.544 INFO [stderr] 88 | |             .collect::<Vec<_>>();
Nov 29 20:32:10.544 INFO [stderr]    | |_________________________________^
Nov 29 20:32:10.544 INFO [stderr]    |
Nov 29 20:32:10.544 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 29 20:32:10.544 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Nov 29 20:32:10.544 INFO [stderr] 
Nov 29 20:32:10.776 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Nov 29 20:32:10.776 INFO [stderr]   --> src/game.rs:69:9
Nov 29 20:32:10.776 INFO [stderr]    |
Nov 29 20:32:10.776 INFO [stderr] 69 | /         self.data
Nov 29 20:32:10.776 INFO [stderr] 70 | |             .chunks_mut(4)
Nov 29 20:32:10.776 INFO [stderr] 71 | |             .map(|row| {
Nov 29 20:32:10.776 INFO [stderr] 72 | |                 let (new_row, new_score) = match dir {
Nov 29 20:32:10.776 INFO [stderr] ...  |
Nov 29 20:32:10.776 INFO [stderr] 87 | |             })
Nov 29 20:32:10.776 INFO [stderr] 88 | |             .collect::<Vec<_>>();
Nov 29 20:32:10.776 INFO [stderr]    | |_________________________________^
Nov 29 20:32:10.776 INFO [stderr]    |
Nov 29 20:32:10.776 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 29 20:32:10.776 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Nov 29 20:32:10.776 INFO [stderr] 
Nov 29 20:32:10.822 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.99s
Nov 29 20:32:10.836 INFO [stderr] su: No module specific data is present
Nov 29 20:32:11.338 INFO running `"docker" "inspect" "c6227b41439c05deb72d5399c7bc31377650bd77a1c848da4a8cf838220dcf24"`
Nov 29 20:32:11.560 INFO running `"docker" "rm" "-f" "c6227b41439c05deb72d5399c7bc31377650bd77a1c848da4a8cf838220dcf24"`
Nov 29 20:32:11.744 INFO [stdout] c6227b41439c05deb72d5399c7bc31377650bd77a1c848da4a8cf838220dcf24