Nov 17 16:24:06.153 INFO testing Cackbone/2048.rs against try#2e026d6e5d7621634147ad4c8074f1d964dbb1be for pr-55982
Nov 17 16:24:06.153 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-3/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-alt build --frozen" "-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 17 16:24:06.857 INFO [stdout] 3d8a64759f704b436be0ea36d66574fd756cf8f9b1a2b32715ea80c6fc8b1470
Nov 17 16:24:06.860 INFO running `"docker" "start" "-a" "3d8a64759f704b436be0ea36d66574fd756cf8f9b1a2b32715ea80c6fc8b1470"`
Nov 17 16:24:08.459 INFO [stderr] usermod: no changes
Nov 17 16:24:08.513 INFO [stderr]    Compiling rust_2048 v0.1.0 (/source)
Nov 17 16:24:09.187 INFO [stderr] warning: value assigned to `grid_bis` is never read
Nov 17 16:24:09.187 INFO [stderr]   --> src/main.rs:18:13
Nov 17 16:24:09.188 INFO [stderr]    |
Nov 17 16:24:09.188 INFO [stderr] 18 |     let mut grid_bis = [[0i8; 4];4];
Nov 17 16:24:09.188 INFO [stderr]    |             ^^^^^^^^
Nov 17 16:24:09.189 INFO [stderr]    |
Nov 17 16:24:09.189 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Nov 17 16:24:09.189 INFO [stderr] 
Nov 17 16:24:09.199 INFO [stderr] warning: variable does not need to be mutable
Nov 17 16:24:09.199 INFO [stderr]   --> src/main.rs:97:28
Nov 17 16:24:09.199 INFO [stderr]    |
Nov 17 16:24:09.200 INFO [stderr] 97 | fn move_grid(d: Direction, mut grid: &mut [[i8; 4]; 4])
Nov 17 16:24:09.200 INFO [stderr]    |                            ----^^^^
Nov 17 16:24:09.200 INFO [stderr]    |                            |
Nov 17 16:24:09.201 INFO [stderr]    |                            help: remove this `mut`
Nov 17 16:24:09.201 INFO [stderr]    |
Nov 17 16:24:09.201 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 17 16:24:09.202 INFO [stderr] 
Nov 17 16:24:09.202 INFO [stderr] warning: variable does not need to be mutable
Nov 17 16:24:09.202 INFO [stderr]    --> src/main.rs:137:13
Nov 17 16:24:09.203 INFO [stderr]     |
Nov 17 16:24:09.203 INFO [stderr] 137 | fn add_tile(mut grid: &mut [[i8; 4]; 4])
Nov 17 16:24:09.203 INFO [stderr]     |             ----^^^^
Nov 17 16:24:09.203 INFO [stderr]     |             |
Nov 17 16:24:09.204 INFO [stderr]     |             help: remove this `mut`
Nov 17 16:24:09.204 INFO [stderr] 
Nov 17 16:24:09.204 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 16:24:09.205 INFO [stderr]   --> src/main.rs:52:13
Nov 17 16:24:09.205 INFO [stderr]    |
Nov 17 16:24:09.205 INFO [stderr] 52 |             Command::new("clear").status();
Nov 17 16:24:09.206 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 16:24:09.206 INFO [stderr]    |
Nov 17 16:24:09.206 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 17 16:24:09.207 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 16:24:09.207 INFO [stderr] 
Nov 17 16:24:09.207 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 16:24:09.208 INFO [stderr]   --> src/main.rs:75:5
Nov 17 16:24:09.208 INFO [stderr]    |
Nov 17 16:24:09.208 INFO [stderr] 75 |     Command::new("clear").status();
Nov 17 16:24:09.208 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 16:24:09.209 INFO [stderr]    |
Nov 17 16:24:09.209 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 16:24:09.209 INFO [stderr] 
Nov 17 16:24:09.976 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.49s
Nov 17 16:24:09.983 INFO [stderr] su: No module specific data is present
Nov 17 16:24:10.832 INFO running `"docker" "inspect" "3d8a64759f704b436be0ea36d66574fd756cf8f9b1a2b32715ea80c6fc8b1470"`
Nov 17 16:24:11.173 INFO running `"docker" "rm" "-f" "3d8a64759f704b436be0ea36d66574fd756cf8f9b1a2b32715ea80c6fc8b1470"`
Nov 17 16:24:11.468 INFO [stdout] 3d8a64759f704b436be0ea36d66574fd756cf8f9b1a2b32715ea80c6fc8b1470
Nov 17 16:24:11.470 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-3/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-alt test --frozen --no-run" "-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 17 16:24:11.944 INFO [stdout] b6fc94bb18f6ed24d53c723bc7de0f3a5102be215346a926d735ea2b7e58ae73
Nov 17 16:24:11.949 INFO running `"docker" "start" "-a" "b6fc94bb18f6ed24d53c723bc7de0f3a5102be215346a926d735ea2b7e58ae73"`
Nov 17 16:24:12.910 INFO [stderr] usermod: no changes
Nov 17 16:24:12.981 INFO [stderr]    Compiling rust_2048 v0.1.0 (/source)
Nov 17 16:24:13.635 INFO [stderr] warning: value assigned to `grid_bis` is never read
Nov 17 16:24:13.635 INFO [stderr]   --> src/main.rs:18:13
Nov 17 16:24:13.635 INFO [stderr]    |
Nov 17 16:24:13.635 INFO [stderr] 18 |     let mut grid_bis = [[0i8; 4];4];
Nov 17 16:24:13.635 INFO [stderr]    |             ^^^^^^^^
Nov 17 16:24:13.635 INFO [stderr]    |
Nov 17 16:24:13.635 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Nov 17 16:24:13.635 INFO [stderr] 
Nov 17 16:24:13.653 INFO [stderr] warning: variable does not need to be mutable
Nov 17 16:24:13.653 INFO [stderr]   --> src/main.rs:97:28
Nov 17 16:24:13.653 INFO [stderr]    |
Nov 17 16:24:13.653 INFO [stderr] 97 | fn move_grid(d: Direction, mut grid: &mut [[i8; 4]; 4])
Nov 17 16:24:13.653 INFO [stderr]    |                            ----^^^^
Nov 17 16:24:13.653 INFO [stderr]    |                            |
Nov 17 16:24:13.653 INFO [stderr]    |                            help: remove this `mut`
Nov 17 16:24:13.653 INFO [stderr]    |
Nov 17 16:24:13.654 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 17 16:24:13.654 INFO [stderr] 
Nov 17 16:24:13.671 INFO [stderr] warning: variable does not need to be mutable
Nov 17 16:24:13.672 INFO [stderr]    --> src/main.rs:137:13
Nov 17 16:24:13.672 INFO [stderr]     |
Nov 17 16:24:13.672 INFO [stderr] 137 | fn add_tile(mut grid: &mut [[i8; 4]; 4])
Nov 17 16:24:13.672 INFO [stderr]     |             ----^^^^
Nov 17 16:24:13.673 INFO [stderr]     |             |
Nov 17 16:24:13.673 INFO [stderr]     |             help: remove this `mut`
Nov 17 16:24:13.673 INFO [stderr] 
Nov 17 16:24:13.675 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 16:24:13.675 INFO [stderr]   --> src/main.rs:52:13
Nov 17 16:24:13.676 INFO [stderr]    |
Nov 17 16:24:13.676 INFO [stderr] 52 |             Command::new("clear").status();
Nov 17 16:24:13.676 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 16:24:13.676 INFO [stderr]    |
Nov 17 16:24:13.677 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 17 16:24:13.677 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 16:24:13.677 INFO [stderr] 
Nov 17 16:24:13.677 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 16:24:13.678 INFO [stderr]   --> src/main.rs:75:5
Nov 17 16:24:13.678 INFO [stderr]    |
Nov 17 16:24:13.678 INFO [stderr] 75 |     Command::new("clear").status();
Nov 17 16:24:13.679 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 16:24:13.679 INFO [stderr]    |
Nov 17 16:24:13.679 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 16:24:13.679 INFO [stderr] 
Nov 17 16:24:14.131 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.19s
Nov 17 16:24:14.135 INFO [stderr] su: No module specific data is present
Nov 17 16:24:14.818 INFO running `"docker" "inspect" "b6fc94bb18f6ed24d53c723bc7de0f3a5102be215346a926d735ea2b7e58ae73"`
Nov 17 16:24:15.077 INFO running `"docker" "rm" "-f" "b6fc94bb18f6ed24d53c723bc7de0f3a5102be215346a926d735ea2b7e58ae73"`
Nov 17 16:24:15.263 INFO [stdout] b6fc94bb18f6ed24d53c723bc7de0f3a5102be215346a926d735ea2b7e58ae73
Nov 17 16:24:15.273 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-3/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-alt test --frozen" "-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 17 16:24:15.671 INFO [stdout] c4fe63278f9e055f038fa8a1106a64791197705dc68011d7200f2b18ced2ab43
Nov 17 16:24:15.673 INFO running `"docker" "start" "-a" "c4fe63278f9e055f038fa8a1106a64791197705dc68011d7200f2b18ced2ab43"`
Nov 17 16:24:16.726 INFO [stderr] usermod: no changes
Nov 17 16:24:16.804 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
Nov 17 16:24:16.807 INFO [stderr]      Running /target/debug/deps/rust_2048-c5ab1bda2532d44b
Nov 17 16:24:16.810 INFO [stdout] 
Nov 17 16:24:16.810 INFO [stdout] running 0 tests
Nov 17 16:24:16.810 INFO [stdout] 
Nov 17 16:24:16.810 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 17 16:24:16.810 INFO [stdout] 
Nov 17 16:24:16.813 INFO [stderr] su: No module specific data is present
Nov 17 16:24:17.383 INFO running `"docker" "inspect" "c4fe63278f9e055f038fa8a1106a64791197705dc68011d7200f2b18ced2ab43"`
Nov 17 16:24:17.737 INFO running `"docker" "rm" "-f" "c4fe63278f9e055f038fa8a1106a64791197705dc68011d7200f2b18ced2ab43"`
Nov 17 16:24:17.999 INFO [stdout] c4fe63278f9e055f038fa8a1106a64791197705dc68011d7200f2b18ced2ab43