Oct 12 15:42:27.826 INFO checking pierrechevalier83/2048-rs against master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f for pr-54977
Oct 12 15:42:27.828 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-6/master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-6/pr-54977/master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f:/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 +5af0bb83044c3fb43d59ad5f49ee5ae1a293901f-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"`
Oct 12 15:42:28.185 INFO blam! ac89455b64293332c29b5062b35c3b665462d397ecd11e0b671fdadc86ec7525
Oct 12 15:42:28.200 INFO running `"docker" "start" "-a" "ac89455b64293332c29b5062b35c3b665462d397ecd11e0b671fdadc86ec7525"`
Oct 12 15:42:28.940 INFO kablam! usermod: no changes
Oct 12 15:42:29.089 INFO kablam!     Checking termion v1.2.0
Oct 12 15:42:29.089 INFO kablam!     Checking num-complex v0.1.36
Oct 12 15:42:29.089 INFO kablam!     Checking matrix_display v0.3.0
Oct 12 15:42:29.089 INFO kablam!     Checking num-bigint v0.1.36
Oct 12 15:42:31.864 INFO kablam!     Checking num-rational v0.1.36
Oct 12 15:42:32.590 INFO kablam!     Checking num v0.1.37
Oct 12 15:42:32.970 INFO kablam!     Checking game-2048 v0.5.1 (/source)
Oct 12 15:42:33.784 INFO kablam! warning: unused return value of `std::iter::Iterator::collect` which must be used
Oct 12 15:42:33.784 INFO kablam!   --> src/game.rs:69:9
Oct 12 15:42:33.784 INFO kablam!    |
Oct 12 15:42:33.785 INFO kablam! 69 | /         self.data
Oct 12 15:42:33.785 INFO kablam! 70 | |             .chunks_mut(4)
Oct 12 15:42:33.785 INFO kablam! 71 | |             .map(|row| {
Oct 12 15:42:33.786 INFO kablam! 72 | |                 let (new_row, new_score) = match dir {
Oct 12 15:42:33.786 INFO kablam! ...  |
Oct 12 15:42:33.787 INFO kablam! 87 | |             })
Oct 12 15:42:33.787 INFO kablam! 88 | |             .collect::<Vec<_>>();
Oct 12 15:42:33.788 INFO kablam!    | |_________________________________^
Oct 12 15:42:33.788 INFO kablam!    |
Oct 12 15:42:33.789 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Oct 12 15:42:33.789 INFO kablam!    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Oct 12 15:42:33.790 INFO kablam! 
Oct 12 15:42:33.979 INFO kablam! warning: unused return value of `std::iter::Iterator::collect` which must be used
Oct 12 15:42:33.980 INFO kablam!   --> src/game.rs:69:9
Oct 12 15:42:33.981 INFO kablam!    |
Oct 12 15:42:33.981 INFO kablam! 69 | /         self.data
Oct 12 15:42:33.982 INFO kablam! 70 | |             .chunks_mut(4)
Oct 12 15:42:33.983 INFO kablam! 71 | |             .map(|row| {
Oct 12 15:42:33.983 INFO kablam! 72 | |                 let (new_row, new_score) = match dir {
Oct 12 15:42:33.984 INFO kablam! ...  |
Oct 12 15:42:33.984 INFO kablam! 87 | |             })
Oct 12 15:42:33.985 INFO kablam! 88 | |             .collect::<Vec<_>>();
Oct 12 15:42:33.986 INFO kablam!    | |_________________________________^
Oct 12 15:42:33.986 INFO kablam!    |
Oct 12 15:42:33.987 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Oct 12 15:42:33.987 INFO kablam!    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Oct 12 15:42:33.988 INFO kablam! 
Oct 12 15:42:34.045 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 5.08s
Oct 12 15:42:34.051 INFO kablam! su: No module specific data is present
Oct 12 15:42:35.125 INFO running `"docker" "rm" "-f" "ac89455b64293332c29b5062b35c3b665462d397ecd11e0b671fdadc86ec7525"`
Oct 12 15:42:35.400 INFO blam! ac89455b64293332c29b5062b35c3b665462d397ecd11e0b671fdadc86ec7525