Nov 01 12:50:29.425 INFO checking Cackbone/2048.rs against master#05812fa8c588473f03e3fa7cf59cd84f4f37c715 for pr-55538
Nov 01 12:50:29.426 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-1/master#05812fa8c588473f03e3fa7cf59cd84f4f37c715:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-55538/master#05812fa8c588473f03e3fa7cf59cd84f4f37c715:/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 +05812fa8c588473f03e3fa7cf59cd84f4f37c715-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 01 12:50:29.936 INFO blam! 6fde23ba1da045fb9e290484ed16b02c0c9c5f6000764009b91819e5a9cf87a1
Nov 01 12:50:29.936 INFO running `"docker" "start" "-a" "6fde23ba1da045fb9e290484ed16b02c0c9c5f6000764009b91819e5a9cf87a1"`
Nov 01 12:50:31.779 INFO kablam! usermod: no changes
Nov 01 12:50:31.873 INFO kablam!     Checking rust_2048 v0.1.0 (/source)
Nov 01 12:50:32.924 INFO kablam! warning: value assigned to `grid_bis` is never read
Nov 01 12:50:32.924 INFO kablam!   --> src/main.rs:18:13
Nov 01 12:50:32.924 INFO kablam!    |
Nov 01 12:50:32.924 INFO kablam! 18 |     let mut grid_bis = [[0i8; 4];4];
Nov 01 12:50:32.924 INFO kablam!    |             ^^^^^^^^
Nov 01 12:50:32.924 INFO kablam!    |
Nov 01 12:50:32.924 INFO kablam!    = note: #[warn(unused_assignments)] on by default
Nov 01 12:50:32.924 INFO kablam! 
Nov 01 12:50:32.944 INFO kablam! warning: variable does not need to be mutable
Nov 01 12:50:32.944 INFO kablam!   --> src/main.rs:97:28
Nov 01 12:50:32.944 INFO kablam!    |
Nov 01 12:50:32.944 INFO kablam! 97 | fn move_grid(d: Direction, mut grid: &mut [[i8; 4]; 4])
Nov 01 12:50:32.944 INFO kablam!    |                            ----^^^^
Nov 01 12:50:32.944 INFO kablam!    |                            |
Nov 01 12:50:32.944 INFO kablam!    |                            help: remove this `mut`
Nov 01 12:50:32.944 INFO kablam!    |
Nov 01 12:50:32.944 INFO kablam!    = note: #[warn(unused_mut)] on by default
Nov 01 12:50:32.944 INFO kablam! 
Nov 01 12:50:32.948 INFO kablam! warning: variable does not need to be mutable
Nov 01 12:50:32.948 INFO kablam!    --> src/main.rs:137:13
Nov 01 12:50:32.948 INFO kablam!     |
Nov 01 12:50:32.948 INFO kablam! 137 | fn add_tile(mut grid: &mut [[i8; 4]; 4])
Nov 01 12:50:32.948 INFO kablam!     |             ----^^^^
Nov 01 12:50:32.948 INFO kablam!     |             |
Nov 01 12:50:32.948 INFO kablam!     |             help: remove this `mut`
Nov 01 12:50:32.948 INFO kablam! 
Nov 01 12:50:32.960 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 01 12:50:32.960 INFO kablam!   --> src/main.rs:52:13
Nov 01 12:50:32.960 INFO kablam!    |
Nov 01 12:50:32.960 INFO kablam! 52 |             Command::new("clear").status();
Nov 01 12:50:32.960 INFO kablam!    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 12:50:32.960 INFO kablam!    |
Nov 01 12:50:32.960 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Nov 01 12:50:32.960 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 12:50:32.960 INFO kablam! 
Nov 01 12:50:32.960 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 01 12:50:32.960 INFO kablam!   --> src/main.rs:75:5
Nov 01 12:50:32.960 INFO kablam!    |
Nov 01 12:50:32.960 INFO kablam! 75 |     Command::new("clear").status();
Nov 01 12:50:32.960 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 12:50:32.960 INFO kablam!    |
Nov 01 12:50:32.960 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 12:50:32.960 INFO kablam! 
Nov 01 12:50:32.999 INFO kablam! warning: value assigned to `grid_bis` is never read
Nov 01 12:50:32.999 INFO kablam!   --> src/main.rs:18:13
Nov 01 12:50:33.000 INFO kablam!    |
Nov 01 12:50:33.000 INFO kablam! 18 |     let mut grid_bis = [[0i8; 4];4];
Nov 01 12:50:33.000 INFO kablam!    |             ^^^^^^^^
Nov 01 12:50:33.000 INFO kablam!    |
Nov 01 12:50:33.000 INFO kablam!    = note: #[warn(unused_assignments)] on by default
Nov 01 12:50:33.000 INFO kablam! 
Nov 01 12:50:33.008 INFO kablam! warning: variable does not need to be mutable
Nov 01 12:50:33.008 INFO kablam!   --> src/main.rs:97:28
Nov 01 12:50:33.008 INFO kablam!    |
Nov 01 12:50:33.008 INFO kablam! 97 | fn move_grid(d: Direction, mut grid: &mut [[i8; 4]; 4])
Nov 01 12:50:33.008 INFO kablam!    |                            ----^^^^
Nov 01 12:50:33.008 INFO kablam!    |                            |
Nov 01 12:50:33.008 INFO kablam!    |                            help: remove this `mut`
Nov 01 12:50:33.008 INFO kablam!    |
Nov 01 12:50:33.008 INFO kablam!    = note: #[warn(unused_mut)] on by default
Nov 01 12:50:33.008 INFO kablam! 
Nov 01 12:50:33.008 INFO kablam! warning: variable does not need to be mutable
Nov 01 12:50:33.008 INFO kablam!    --> src/main.rs:137:13
Nov 01 12:50:33.009 INFO kablam!     |
Nov 01 12:50:33.009 INFO kablam! 137 | fn add_tile(mut grid: &mut [[i8; 4]; 4])
Nov 01 12:50:33.009 INFO kablam!     |             ----^^^^
Nov 01 12:50:33.009 INFO kablam!     |             |
Nov 01 12:50:33.009 INFO kablam!     |             help: remove this `mut`
Nov 01 12:50:33.009 INFO kablam! 
Nov 01 12:50:33.024 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 01 12:50:33.024 INFO kablam!   --> src/main.rs:52:13
Nov 01 12:50:33.024 INFO kablam!    |
Nov 01 12:50:33.024 INFO kablam! 52 |             Command::new("clear").status();
Nov 01 12:50:33.024 INFO kablam!    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 12:50:33.024 INFO kablam!    |
Nov 01 12:50:33.024 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Nov 01 12:50:33.024 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 12:50:33.024 INFO kablam! 
Nov 01 12:50:33.024 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 01 12:50:33.024 INFO kablam!   --> src/main.rs:75:5
Nov 01 12:50:33.024 INFO kablam!    |
Nov 01 12:50:33.024 INFO kablam! 75 |     Command::new("clear").status();
Nov 01 12:50:33.024 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 12:50:33.024 INFO kablam!    |
Nov 01 12:50:33.024 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 12:50:33.024 INFO kablam! 
Nov 01 12:50:33.064 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.25s
Nov 01 12:50:33.064 INFO kablam! su: No module specific data is present
Nov 01 12:50:34.153 INFO running `"docker" "rm" "-f" "6fde23ba1da045fb9e290484ed16b02c0c9c5f6000764009b91819e5a9cf87a1"`
Nov 01 12:50:34.412 INFO blam! 6fde23ba1da045fb9e290484ed16b02c0c9c5f6000764009b91819e5a9cf87a1