Dec 14 11:33:57.571 INFO testing Cackbone/2048.rs against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 14 11:33:57.571 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-6/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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"`
Dec 14 11:33:58.104 INFO [stdout] b741d736afe04e79b07db95420e32c254f4afda51c71f7339a8948a8d57117e1
Dec 14 11:33:58.106 INFO running `"docker" "start" "-a" "b741d736afe04e79b07db95420e32c254f4afda51c71f7339a8948a8d57117e1"`
Dec 14 11:33:59.645 INFO [stderr] usermod: no changes
Dec 14 11:33:59.698 INFO [stderr]    Compiling rust_2048 v0.1.0 (/source)
Dec 14 11:34:00.295 INFO [stderr] warning: value assigned to `grid_bis` is never read
Dec 14 11:34:00.295 INFO [stderr]   --> src/main.rs:18:13
Dec 14 11:34:00.295 INFO [stderr]    |
Dec 14 11:34:00.295 INFO [stderr] 18 |     let mut grid_bis = [[0i8; 4];4];
Dec 14 11:34:00.295 INFO [stderr]    |             ^^^^^^^^
Dec 14 11:34:00.295 INFO [stderr]    |
Dec 14 11:34:00.295 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 14 11:34:00.295 INFO [stderr] 
Dec 14 11:34:00.295 INFO [stderr] warning: variable does not need to be mutable
Dec 14 11:34:00.295 INFO [stderr]   --> src/main.rs:97:28
Dec 14 11:34:00.295 INFO [stderr]    |
Dec 14 11:34:00.295 INFO [stderr] 97 | fn move_grid(d: Direction, mut grid: &mut [[i8; 4]; 4])
Dec 14 11:34:00.295 INFO [stderr]    |                            ----^^^^
Dec 14 11:34:00.295 INFO [stderr]    |                            |
Dec 14 11:34:00.295 INFO [stderr]    |                            help: remove this `mut`
Dec 14 11:34:00.295 INFO [stderr]    |
Dec 14 11:34:00.295 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 14 11:34:00.295 INFO [stderr] 
Dec 14 11:34:00.303 INFO [stderr] warning: variable does not need to be mutable
Dec 14 11:34:00.303 INFO [stderr]    --> src/main.rs:137:13
Dec 14 11:34:00.303 INFO [stderr]     |
Dec 14 11:34:00.303 INFO [stderr] 137 | fn add_tile(mut grid: &mut [[i8; 4]; 4])
Dec 14 11:34:00.303 INFO [stderr]     |             ----^^^^
Dec 14 11:34:00.303 INFO [stderr]     |             |
Dec 14 11:34:00.303 INFO [stderr]     |             help: remove this `mut`
Dec 14 11:34:00.303 INFO [stderr] 
Dec 14 11:34:00.311 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 11:34:00.311 INFO [stderr]   --> src/main.rs:52:13
Dec 14 11:34:00.311 INFO [stderr]    |
Dec 14 11:34:00.311 INFO [stderr] 52 |             Command::new("clear").status();
Dec 14 11:34:00.311 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 11:34:00.311 INFO [stderr]    |
Dec 14 11:34:00.311 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 14 11:34:00.311 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 11:34:00.311 INFO [stderr] 
Dec 14 11:34:00.311 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 11:34:00.311 INFO [stderr]   --> src/main.rs:75:5
Dec 14 11:34:00.311 INFO [stderr]    |
Dec 14 11:34:00.311 INFO [stderr] 75 |     Command::new("clear").status();
Dec 14 11:34:00.311 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 11:34:00.311 INFO [stderr]    |
Dec 14 11:34:00.311 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 11:34:00.311 INFO [stderr] 
Dec 14 11:34:01.016 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.35s
Dec 14 11:34:01.019 INFO [stderr] su: No module specific data is present
Dec 14 11:34:01.887 INFO running `"docker" "inspect" "b741d736afe04e79b07db95420e32c254f4afda51c71f7339a8948a8d57117e1"`
Dec 14 11:34:02.120 INFO running `"docker" "rm" "-f" "b741d736afe04e79b07db95420e32c254f4afda51c71f7339a8948a8d57117e1"`
Dec 14 11:34:02.215 INFO [stdout] b741d736afe04e79b07db95420e32c254f4afda51c71f7339a8948a8d57117e1
Dec 14 11:34:02.217 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-6/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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"`
Dec 14 11:34:02.417 INFO [stdout] 088089efb93e2246c91d1b1e8bace93fcb84d4e43a9c19e00bba5e323e6eccb6
Dec 14 11:34:02.418 INFO running `"docker" "start" "-a" "088089efb93e2246c91d1b1e8bace93fcb84d4e43a9c19e00bba5e323e6eccb6"`
Dec 14 11:34:03.039 INFO [stderr] usermod: no changes
Dec 14 11:34:03.088 INFO [stderr]    Compiling rust_2048 v0.1.0 (/source)
Dec 14 11:34:03.707 INFO [stderr] warning: value assigned to `grid_bis` is never read
Dec 14 11:34:03.707 INFO [stderr]   --> src/main.rs:18:13
Dec 14 11:34:03.707 INFO [stderr]    |
Dec 14 11:34:03.707 INFO [stderr] 18 |     let mut grid_bis = [[0i8; 4];4];
Dec 14 11:34:03.707 INFO [stderr]    |             ^^^^^^^^
Dec 14 11:34:03.707 INFO [stderr]    |
Dec 14 11:34:03.707 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 14 11:34:03.707 INFO [stderr] 
Dec 14 11:34:03.723 INFO [stderr] warning: variable does not need to be mutable
Dec 14 11:34:03.723 INFO [stderr]   --> src/main.rs:97:28
Dec 14 11:34:03.723 INFO [stderr]    |
Dec 14 11:34:03.723 INFO [stderr] 97 | fn move_grid(d: Direction, mut grid: &mut [[i8; 4]; 4])
Dec 14 11:34:03.723 INFO [stderr]    |                            ----^^^^
Dec 14 11:34:03.723 INFO [stderr]    |                            |
Dec 14 11:34:03.723 INFO [stderr]    |                            help: remove this `mut`
Dec 14 11:34:03.723 INFO [stderr]    |
Dec 14 11:34:03.723 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 14 11:34:03.723 INFO [stderr] 
Dec 14 11:34:03.723 INFO [stderr] warning: variable does not need to be mutable
Dec 14 11:34:03.723 INFO [stderr]    --> src/main.rs:137:13
Dec 14 11:34:03.723 INFO [stderr]     |
Dec 14 11:34:03.723 INFO [stderr] 137 | fn add_tile(mut grid: &mut [[i8; 4]; 4])
Dec 14 11:34:03.723 INFO [stderr]     |             ----^^^^
Dec 14 11:34:03.723 INFO [stderr]     |             |
Dec 14 11:34:03.723 INFO [stderr]     |             help: remove this `mut`
Dec 14 11:34:03.723 INFO [stderr] 
Dec 14 11:34:03.730 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 11:34:03.730 INFO [stderr]   --> src/main.rs:52:13
Dec 14 11:34:03.730 INFO [stderr]    |
Dec 14 11:34:03.730 INFO [stderr] 52 |             Command::new("clear").status();
Dec 14 11:34:03.730 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 11:34:03.730 INFO [stderr]    |
Dec 14 11:34:03.730 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 14 11:34:03.730 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 11:34:03.730 INFO [stderr] 
Dec 14 11:34:03.730 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 11:34:03.730 INFO [stderr]   --> src/main.rs:75:5
Dec 14 11:34:03.730 INFO [stderr]    |
Dec 14 11:34:03.730 INFO [stderr] 75 |     Command::new("clear").status();
Dec 14 11:34:03.730 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 11:34:03.730 INFO [stderr]    |
Dec 14 11:34:03.730 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 11:34:03.730 INFO [stderr] 
Dec 14 11:34:03.961 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.89s
Dec 14 11:34:03.961 INFO [stderr] su: No module specific data is present
Dec 14 11:34:04.514 INFO running `"docker" "inspect" "088089efb93e2246c91d1b1e8bace93fcb84d4e43a9c19e00bba5e323e6eccb6"`
Dec 14 11:34:04.620 INFO running `"docker" "rm" "-f" "088089efb93e2246c91d1b1e8bace93fcb84d4e43a9c19e00bba5e323e6eccb6"`
Dec 14 11:34:04.895 INFO [stdout] 088089efb93e2246c91d1b1e8bace93fcb84d4e43a9c19e00bba5e323e6eccb6
Dec 14 11:34:04.967 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-6/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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"`
Dec 14 11:34:05.336 INFO [stdout] 8602aa2143b89e75ee5b177f42dd444e7bd492c76d481a3994a9c882d3f1842e
Dec 14 11:34:05.344 INFO running `"docker" "start" "-a" "8602aa2143b89e75ee5b177f42dd444e7bd492c76d481a3994a9c882d3f1842e"`
Dec 14 11:34:05.992 INFO [stderr] usermod: no changes
Dec 14 11:34:06.083 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
Dec 14 11:34:06.084 INFO [stderr]      Running /target/debug/deps/rust_2048-cc46b5659759458e
Dec 14 11:34:06.084 INFO [stderr] su: No module specific data is present
Dec 14 11:34:06.084 INFO [stdout] 
Dec 14 11:34:06.084 INFO [stdout] running 0 tests
Dec 14 11:34:06.084 INFO [stdout] 
Dec 14 11:34:06.084 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 11:34:06.084 INFO [stdout] 
Dec 14 11:34:06.360 INFO running `"docker" "inspect" "8602aa2143b89e75ee5b177f42dd444e7bd492c76d481a3994a9c882d3f1842e"`
Dec 14 11:34:06.540 INFO running `"docker" "rm" "-f" "8602aa2143b89e75ee5b177f42dd444e7bd492c76d481a3994a9c882d3f1842e"`
Dec 14 11:34:06.736 INFO [stdout] 8602aa2143b89e75ee5b177f42dd444e7bd492c76d481a3994a9c882d3f1842e