Dec 12 03:31:32.245 INFO checking Catman155/four-in-a-row against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 03:31:32.245 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-4/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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"`
Dec 12 03:31:32.704 INFO [stdout] 4db32734495b89abfec2d2f45bba0612d5f5f05f7b5b830573457cede40d4ff4
Dec 12 03:31:32.704 INFO running `"docker" "start" "-a" "4db32734495b89abfec2d2f45bba0612d5f5f05f7b5b830573457cede40d4ff4"`
Dec 12 03:31:33.975 INFO [stderr] usermod: no changes
Dec 12 03:31:34.080 INFO [stderr]     Checking four_in_a_row v0.1.0 (/source)
Dec 12 03:31:34.512 INFO [stderr] warning: unused import: `BOARD_SIZE`
Dec 12 03:31:34.512 INFO [stderr]  --> src/objects/ai.rs:2:5
Dec 12 03:31:34.512 INFO [stderr]   |
Dec 12 03:31:34.512 INFO [stderr] 2 | use BOARD_SIZE;
Dec 12 03:31:34.512 INFO [stderr]   |     ^^^^^^^^^^
Dec 12 03:31:34.512 INFO [stderr]   |
Dec 12 03:31:34.512 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 03:31:34.512 INFO [stderr] 
Dec 12 03:31:34.596 INFO [stderr] warning: unused variable: `direction`
Dec 12 03:31:34.596 INFO [stderr]   --> src/objects/ai.rs:19:17
Dec 12 03:31:34.596 INFO [stderr]    |
Dec 12 03:31:34.596 INFO [stderr] 19 |             let direction = self.get_possible_directions(positions);
Dec 12 03:31:34.596 INFO [stderr]    |                 ^^^^^^^^^ help: consider using `_direction` instead
Dec 12 03:31:34.596 INFO [stderr]    |
Dec 12 03:31:34.596 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 12 03:31:34.596 INFO [stderr] 
Dec 12 03:31:34.613 INFO [stderr] warning: variable does not need to be mutable
Dec 12 03:31:34.613 INFO [stderr]   --> src/objects/ai.rs:31:13
Dec 12 03:31:34.613 INFO [stderr]    |
Dec 12 03:31:34.613 INFO [stderr] 31 |         let mut possible = Vec::<[(i64, i64); 4]>::new();
Dec 12 03:31:34.613 INFO [stderr]    |             ----^^^^^^^^
Dec 12 03:31:34.613 INFO [stderr]    |             |
Dec 12 03:31:34.613 INFO [stderr]    |             help: remove this `mut`
Dec 12 03:31:34.613 INFO [stderr]    |
Dec 12 03:31:34.613 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 03:31:34.613 INFO [stderr] 
Dec 12 03:31:34.645 INFO [stderr] warning: unused import: `BOARD_SIZE`
Dec 12 03:31:34.645 INFO [stderr]  --> src/objects/ai.rs:2:5
Dec 12 03:31:34.645 INFO [stderr]   |
Dec 12 03:31:34.645 INFO [stderr] 2 | use BOARD_SIZE;
Dec 12 03:31:34.645 INFO [stderr]   |     ^^^^^^^^^^
Dec 12 03:31:34.645 INFO [stderr]   |
Dec 12 03:31:34.645 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 03:31:34.645 INFO [stderr] 
Dec 12 03:31:34.743 INFO [stderr] warning: unused variable: `direction`
Dec 12 03:31:34.743 INFO [stderr]   --> src/objects/ai.rs:19:17
Dec 12 03:31:34.743 INFO [stderr]    |
Dec 12 03:31:34.743 INFO [stderr] 19 |             let direction = self.get_possible_directions(positions);
Dec 12 03:31:34.743 INFO [stderr]    |                 ^^^^^^^^^ help: consider using `_direction` instead
Dec 12 03:31:34.743 INFO [stderr]    |
Dec 12 03:31:34.743 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 12 03:31:34.743 INFO [stderr] 
Dec 12 03:31:34.757 INFO [stderr] warning: variable does not need to be mutable
Dec 12 03:31:34.757 INFO [stderr]   --> src/objects/ai.rs:31:13
Dec 12 03:31:34.757 INFO [stderr]    |
Dec 12 03:31:34.757 INFO [stderr] 31 |         let mut possible = Vec::<[(i64, i64); 4]>::new();
Dec 12 03:31:34.757 INFO [stderr]    |             ----^^^^^^^^
Dec 12 03:31:34.757 INFO [stderr]    |             |
Dec 12 03:31:34.757 INFO [stderr]    |             help: remove this `mut`
Dec 12 03:31:34.757 INFO [stderr]    |
Dec 12 03:31:34.757 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 03:31:34.757 INFO [stderr] 
Dec 12 03:31:34.784 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
Dec 12 03:31:34.784 INFO [stderr] su: No module specific data is present
Dec 12 03:31:35.466 INFO running `"docker" "inspect" "4db32734495b89abfec2d2f45bba0612d5f5f05f7b5b830573457cede40d4ff4"`
Dec 12 03:31:35.786 INFO running `"docker" "rm" "-f" "4db32734495b89abfec2d2f45bba0612d5f5f05f7b5b830573457cede40d4ff4"`
Dec 12 03:31:36.045 INFO [stdout] 4db32734495b89abfec2d2f45bba0612d5f5f05f7b5b830573457cede40d4ff4