Dec 11 05:13:20.414 INFO checking zeerorg/A-I-Rust against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 05:13:20.414 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-1/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/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 11 05:13:20.904 INFO [stdout] e0916194e5648e8d5ab911ac8b4e8eb9028d40615f631d8fd3dc23cd9e01c189
Dec 11 05:13:20.906 INFO running `"docker" "start" "-a" "e0916194e5648e8d5ab911ac8b4e8eb9028d40615f631d8fd3dc23cd9e01c189"`
Dec 11 05:13:22.451 INFO [stderr] usermod: no changes
Dec 11 05:13:22.501 INFO [stderr]     Checking artificial_intelligence v0.1.0 (/source)
Dec 11 05:13:23.277 INFO [stderr] warning: function is never used: `dfs`
Dec 11 05:13:23.277 INFO [stderr]  --> src/algo/dfs.rs:5:1
Dec 11 05:13:23.277 INFO [stderr]   |
Dec 11 05:13:23.277 INFO [stderr] 5 | pub fn dfs<T: PartialEq + Hash + Eq + Clone + Display> (start: &T, goal_function: &Fn(&T) -> bool, _functions: Vec<&Fn(&T) -> T>) -> bool {
Dec 11 05:13:23.277 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.277 INFO [stderr]   |
Dec 11 05:13:23.277 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 11 05:13:23.277 INFO [stderr] 
Dec 11 05:13:23.277 INFO [stderr] warning: function is never used: `bfs`
Dec 11 05:13:23.277 INFO [stderr]  --> src/algo/bfs.rs:5:1
Dec 11 05:13:23.277 INFO [stderr]   |
Dec 11 05:13:23.277 INFO [stderr] 5 | pub fn bfs<T: PartialEq + Hash + Eq + Clone + Display> (start: &T, goal_function: &Fn(&T) -> bool, _functions: Vec<&Fn(&T) -> T>) -> bool {
Dec 11 05:13:23.277 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.277 INFO [stderr] 
Dec 11 05:13:23.277 INFO [stderr] warning: function is never used: `dfid`
Dec 11 05:13:23.277 INFO [stderr]  --> src/algo/dfid.rs:6:1
Dec 11 05:13:23.277 INFO [stderr]   |
Dec 11 05:13:23.277 INFO [stderr] 6 | pub fn dfid<T: PartialEq + Hash + Eq + Clone + Display> (start: &T, goal_function: &Fn(&T) -> bool, _functions: &Vec<&Fn(&T) -> T>) -> bool {
Dec 11 05:13:23.277 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.277 INFO [stderr] 
Dec 11 05:13:23.277 INFO [stderr] warning: function is never used: `dfs_depth`
Dec 11 05:13:23.277 INFO [stderr]   --> src/algo/dfid.rs:24:1
Dec 11 05:13:23.277 INFO [stderr]    |
Dec 11 05:13:23.277 INFO [stderr] 24 | fn dfs_depth<T: PartialEq + Hash + Eq + Clone + Display> (start: &T, goal_function: &Fn(&T) -> bool, _functions: &Vec<&Fn(&T) -> T>, max_depth: i32) -> (bool, i32) {
Dec 11 05:13:23.277 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.277 INFO [stderr] 
Dec 11 05:13:23.277 INFO [stderr] warning: function is never used: `start_game`
Dec 11 05:13:23.277 INFO [stderr]  --> src/algo/tic_tac_toe_algo.rs:4:1
Dec 11 05:13:23.277 INFO [stderr]   |
Dec 11 05:13:23.277 INFO [stderr] 4 | fn start_game() -> i32 {
Dec 11 05:13:23.277 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.277 INFO [stderr] 
Dec 11 05:13:23.277 INFO [stderr] warning: method is never used: `new`
Dec 11 05:13:23.277 INFO [stderr]   --> src/problems/water_jug.rs:13:5
Dec 11 05:13:23.277 INFO [stderr]    |
Dec 11 05:13:23.277 INFO [stderr] 13 |     pub fn new(jug_a: i32, jug_b: i32, max_a: i32, max_b: i32) -> Jugs {
Dec 11 05:13:23.277 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.277 INFO [stderr] 
Dec 11 05:13:23.277 INFO [stderr] warning: function is never used: `fill_a`
Dec 11 05:13:23.277 INFO [stderr]   --> src/problems/water_jug.rs:29:1
Dec 11 05:13:23.277 INFO [stderr]    |
Dec 11 05:13:23.277 INFO [stderr] 29 | pub fn fill_a(jugs: &Jugs) -> Jugs {
Dec 11 05:13:23.277 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.277 INFO [stderr] 
Dec 11 05:13:23.277 INFO [stderr] warning: function is never used: `fill_b`
Dec 11 05:13:23.277 INFO [stderr]   --> src/problems/water_jug.rs:38:1
Dec 11 05:13:23.277 INFO [stderr]    |
Dec 11 05:13:23.277 INFO [stderr] 38 | pub fn fill_b(jugs: &Jugs) -> Jugs {
Dec 11 05:13:23.277 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.277 INFO [stderr] 
Dec 11 05:13:23.277 INFO [stderr] warning: function is never used: `empty_a`
Dec 11 05:13:23.277 INFO [stderr]   --> src/problems/water_jug.rs:47:1
Dec 11 05:13:23.277 INFO [stderr]    |
Dec 11 05:13:23.277 INFO [stderr] 47 | pub fn empty_a(jugs: &Jugs) -> Jugs {
Dec 11 05:13:23.277 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.277 INFO [stderr] 
Dec 11 05:13:23.277 INFO [stderr] warning: function is never used: `empty_b`
Dec 11 05:13:23.277 INFO [stderr]   --> src/problems/water_jug.rs:56:1
Dec 11 05:13:23.277 INFO [stderr]    |
Dec 11 05:13:23.277 INFO [stderr] 56 | pub fn empty_b(jugs: &Jugs) -> Jugs {
Dec 11 05:13:23.277 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.278 INFO [stderr] 
Dec 11 05:13:23.278 INFO [stderr] warning: function is never used: `trn_a_to_b`
Dec 11 05:13:23.278 INFO [stderr]   --> src/problems/water_jug.rs:65:1
Dec 11 05:13:23.278 INFO [stderr]    |
Dec 11 05:13:23.278 INFO [stderr] 65 | pub fn trn_a_to_b(jugs: &Jugs) -> Jugs {
Dec 11 05:13:23.278 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.278 INFO [stderr] 
Dec 11 05:13:23.278 INFO [stderr] warning: function is never used: `trn_b_to_a`
Dec 11 05:13:23.278 INFO [stderr]   --> src/problems/water_jug.rs:74:1
Dec 11 05:13:23.278 INFO [stderr]    |
Dec 11 05:13:23.278 INFO [stderr] 74 | pub fn trn_b_to_a(jugs: &Jugs) -> Jugs {
Dec 11 05:13:23.278 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.278 INFO [stderr] 
Dec 11 05:13:23.278 INFO [stderr] warning: method is never used: `new`
Dec 11 05:13:23.278 INFO [stderr]  --> src/problems/eight_puzz.rs:8:5
Dec 11 05:13:23.278 INFO [stderr]   |
Dec 11 05:13:23.278 INFO [stderr] 8 |     pub fn new(puzzle: [[i32; 3] ; 3]) -> Puzzle {
Dec 11 05:13:23.278 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.278 INFO [stderr] 
Dec 11 05:13:23.278 INFO [stderr] warning: function is never used: `from_up`
Dec 11 05:13:23.278 INFO [stderr]   --> src/problems/eight_puzz.rs:27:1
Dec 11 05:13:23.278 INFO [stderr]    |
Dec 11 05:13:23.278 INFO [stderr] 27 | pub fn from_up(x: &Puzzle) -> Puzzle {
Dec 11 05:13:23.278 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.278 INFO [stderr] 
Dec 11 05:13:23.278 INFO [stderr] warning: function is never used: `from_down`
Dec 11 05:13:23.278 INFO [stderr]   --> src/problems/eight_puzz.rs:42:1
Dec 11 05:13:23.278 INFO [stderr]    |
Dec 11 05:13:23.278 INFO [stderr] 42 | pub fn from_down(x: &Puzzle) -> Puzzle {
Dec 11 05:13:23.278 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.278 INFO [stderr] 
Dec 11 05:13:23.278 INFO [stderr] warning: function is never used: `from_left`
Dec 11 05:13:23.278 INFO [stderr]   --> src/problems/eight_puzz.rs:57:1
Dec 11 05:13:23.278 INFO [stderr]    |
Dec 11 05:13:23.278 INFO [stderr] 57 | pub fn from_left(x: &Puzzle) -> Puzzle {
Dec 11 05:13:23.278 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.278 INFO [stderr] 
Dec 11 05:13:23.278 INFO [stderr] warning: function is never used: `from_right`
Dec 11 05:13:23.278 INFO [stderr]   --> src/problems/eight_puzz.rs:72:1
Dec 11 05:13:23.278 INFO [stderr]    |
Dec 11 05:13:23.278 INFO [stderr] 72 | pub fn from_right(x: &Puzzle) -> Puzzle {
Dec 11 05:13:23.278 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.278 INFO [stderr] 
Dec 11 05:13:23.278 INFO [stderr] warning: variant is never constructed: `Blank`
Dec 11 05:13:23.278 INFO [stderr]  --> src/problems/tic_tac_toe.rs:7:5
Dec 11 05:13:23.278 INFO [stderr]   |
Dec 11 05:13:23.278 INFO [stderr] 7 |     Blank = 2,
Dec 11 05:13:23.278 INFO [stderr]   |     ^^^^^^^^^
Dec 11 05:13:23.278 INFO [stderr] 
Dec 11 05:13:23.278 INFO [stderr] warning: variant is never constructed: `X`
Dec 11 05:13:23.278 INFO [stderr]  --> src/problems/tic_tac_toe.rs:8:5
Dec 11 05:13:23.278 INFO [stderr]   |
Dec 11 05:13:23.278 INFO [stderr] 8 |     X = 3,
Dec 11 05:13:23.278 INFO [stderr]   |     ^^^^^
Dec 11 05:13:23.278 INFO [stderr] 
Dec 11 05:13:23.278 INFO [stderr] warning: variant is never constructed: `O`
Dec 11 05:13:23.278 INFO [stderr]  --> src/problems/tic_tac_toe.rs:9:5
Dec 11 05:13:23.278 INFO [stderr]   |
Dec 11 05:13:23.278 INFO [stderr] 9 |     O = 5
Dec 11 05:13:23.278 INFO [stderr]   |     ^^^^^
Dec 11 05:13:23.278 INFO [stderr] 
Dec 11 05:13:23.278 INFO [stderr] warning: method is never used: `new`
Dec 11 05:13:23.278 INFO [stderr]   --> src/problems/tic_tac_toe.rs:39:5
Dec 11 05:13:23.278 INFO [stderr]    |
Dec 11 05:13:23.278 INFO [stderr] 39 |     pub fn new() -> Board {
Dec 11 05:13:23.278 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.278 INFO [stderr] 
Dec 11 05:13:23.278 INFO [stderr] warning: method is never used: `make_2`
Dec 11 05:13:23.278 INFO [stderr]   --> src/problems/tic_tac_toe.rs:47:5
Dec 11 05:13:23.278 INFO [stderr]    |
Dec 11 05:13:23.278 INFO [stderr] 47 |     pub fn make_2(&self) -> Option<i32> {
Dec 11 05:13:23.278 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.278 INFO [stderr] 
Dec 11 05:13:23.278 INFO [stderr] warning: method is never used: `poss_win`
Dec 11 05:13:23.278 INFO [stderr]   --> src/problems/tic_tac_toe.rs:58:5
Dec 11 05:13:23.278 INFO [stderr]    |
Dec 11 05:13:23.278 INFO [stderr] 58 |     pub fn poss_win(&self, p: Moves) -> i32 {
Dec 11 05:13:23.278 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.278 INFO [stderr] 
Dec 11 05:13:23.278 INFO [stderr] warning: method is never used: `go`
Dec 11 05:13:23.278 INFO [stderr]   --> src/problems/tic_tac_toe.rs:87:5
Dec 11 05:13:23.278 INFO [stderr]    |
Dec 11 05:13:23.278 INFO [stderr] 87 |     pub fn go(&mut self, pos: &i32, mv: Moves) {
Dec 11 05:13:23.278 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.278 INFO [stderr] 
Dec 11 05:13:23.278 INFO [stderr] warning: method is never used: `get_blank`
Dec 11 05:13:23.278 INFO [stderr]   --> src/problems/tic_tac_toe.rs:93:5
Dec 11 05:13:23.278 INFO [stderr]    |
Dec 11 05:13:23.278 INFO [stderr] 93 |     fn get_blank(&self, positions: &[i32]) -> i32 {
Dec 11 05:13:23.278 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.278 INFO [stderr] 
Dec 11 05:13:23.278 INFO [stderr] warning: method is never used: `get_product`
Dec 11 05:13:23.278 INFO [stderr]   --> src/problems/tic_tac_toe.rs:98:5
Dec 11 05:13:23.278 INFO [stderr]    |
Dec 11 05:13:23.278 INFO [stderr] 98 |     fn get_product(&self, positions: &[i32]) -> i32 {
Dec 11 05:13:23.279 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.279 INFO [stderr] 
Dec 11 05:13:23.279 INFO [stderr] warning: struct is never constructed: `NodeDepth`
Dec 11 05:13:23.279 INFO [stderr]  --> src/helper/node.rs:3:1
Dec 11 05:13:23.279 INFO [stderr]   |
Dec 11 05:13:23.279 INFO [stderr] 3 | pub struct NodeDepth<T> {
Dec 11 05:13:23.279 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.279 INFO [stderr] 
Dec 11 05:13:23.279 INFO [stderr] warning: method is never used: `new`
Dec 11 05:13:23.279 INFO [stderr]  --> src/helper/node.rs:9:5
Dec 11 05:13:23.279 INFO [stderr]   |
Dec 11 05:13:23.279 INFO [stderr] 9 |     pub fn new(data: T, depth: i32) -> NodeDepth<T> {
Dec 11 05:13:23.279 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.279 INFO [stderr] 
Dec 11 05:13:23.408 INFO [stderr] warning: function is never used: `start_game`
Dec 11 05:13:23.408 INFO [stderr]  --> src/algo/tic_tac_toe_algo.rs:4:1
Dec 11 05:13:23.408 INFO [stderr]   |
Dec 11 05:13:23.408 INFO [stderr] 4 | fn start_game() -> i32 {
Dec 11 05:13:23.408 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.408 INFO [stderr]   |
Dec 11 05:13:23.408 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 11 05:13:23.408 INFO [stderr] 
Dec 11 05:13:23.408 INFO [stderr] warning: variant is never constructed: `Blank`
Dec 11 05:13:23.408 INFO [stderr]  --> src/problems/tic_tac_toe.rs:7:5
Dec 11 05:13:23.408 INFO [stderr]   |
Dec 11 05:13:23.408 INFO [stderr] 7 |     Blank = 2,
Dec 11 05:13:23.408 INFO [stderr]   |     ^^^^^^^^^
Dec 11 05:13:23.408 INFO [stderr] 
Dec 11 05:13:23.408 INFO [stderr] warning: variant is never constructed: `X`
Dec 11 05:13:23.408 INFO [stderr]  --> src/problems/tic_tac_toe.rs:8:5
Dec 11 05:13:23.408 INFO [stderr]   |
Dec 11 05:13:23.408 INFO [stderr] 8 |     X = 3,
Dec 11 05:13:23.408 INFO [stderr]   |     ^^^^^
Dec 11 05:13:23.408 INFO [stderr] 
Dec 11 05:13:23.408 INFO [stderr] warning: variant is never constructed: `O`
Dec 11 05:13:23.408 INFO [stderr]  --> src/problems/tic_tac_toe.rs:9:5
Dec 11 05:13:23.408 INFO [stderr]   |
Dec 11 05:13:23.408 INFO [stderr] 9 |     O = 5
Dec 11 05:13:23.408 INFO [stderr]   |     ^^^^^
Dec 11 05:13:23.408 INFO [stderr] 
Dec 11 05:13:23.408 INFO [stderr] warning: method is never used: `new`
Dec 11 05:13:23.408 INFO [stderr]   --> src/problems/tic_tac_toe.rs:39:5
Dec 11 05:13:23.408 INFO [stderr]    |
Dec 11 05:13:23.408 INFO [stderr] 39 |     pub fn new() -> Board {
Dec 11 05:13:23.408 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.408 INFO [stderr] 
Dec 11 05:13:23.408 INFO [stderr] warning: method is never used: `make_2`
Dec 11 05:13:23.408 INFO [stderr]   --> src/problems/tic_tac_toe.rs:47:5
Dec 11 05:13:23.408 INFO [stderr]    |
Dec 11 05:13:23.408 INFO [stderr] 47 |     pub fn make_2(&self) -> Option<i32> {
Dec 11 05:13:23.408 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.408 INFO [stderr] 
Dec 11 05:13:23.408 INFO [stderr] warning: method is never used: `poss_win`
Dec 11 05:13:23.408 INFO [stderr]   --> src/problems/tic_tac_toe.rs:58:5
Dec 11 05:13:23.408 INFO [stderr]    |
Dec 11 05:13:23.408 INFO [stderr] 58 |     pub fn poss_win(&self, p: Moves) -> i32 {
Dec 11 05:13:23.408 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.408 INFO [stderr] 
Dec 11 05:13:23.408 INFO [stderr] warning: method is never used: `go`
Dec 11 05:13:23.408 INFO [stderr]   --> src/problems/tic_tac_toe.rs:87:5
Dec 11 05:13:23.408 INFO [stderr]    |
Dec 11 05:13:23.408 INFO [stderr] 87 |     pub fn go(&mut self, pos: &i32, mv: Moves) {
Dec 11 05:13:23.408 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.408 INFO [stderr] 
Dec 11 05:13:23.408 INFO [stderr] warning: method is never used: `get_blank`
Dec 11 05:13:23.408 INFO [stderr]   --> src/problems/tic_tac_toe.rs:93:5
Dec 11 05:13:23.408 INFO [stderr]    |
Dec 11 05:13:23.408 INFO [stderr] 93 |     fn get_blank(&self, positions: &[i32]) -> i32 {
Dec 11 05:13:23.408 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.408 INFO [stderr] 
Dec 11 05:13:23.408 INFO [stderr] warning: method is never used: `get_product`
Dec 11 05:13:23.408 INFO [stderr]   --> src/problems/tic_tac_toe.rs:98:5
Dec 11 05:13:23.408 INFO [stderr]    |
Dec 11 05:13:23.408 INFO [stderr] 98 |     fn get_product(&self, positions: &[i32]) -> i32 {
Dec 11 05:13:23.408 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:13:23.409 INFO [stderr] 
Dec 11 05:13:23.439 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.95s
Dec 11 05:13:23.440 INFO [stderr] su: No module specific data is present
Dec 11 05:13:24.159 INFO running `"docker" "inspect" "e0916194e5648e8d5ab911ac8b4e8eb9028d40615f631d8fd3dc23cd9e01c189"`
Dec 11 05:13:24.414 INFO running `"docker" "rm" "-f" "e0916194e5648e8d5ab911ac8b4e8eb9028d40615f631d8fd3dc23cd9e01c189"`
Dec 11 05:13:24.692 INFO [stdout] e0916194e5648e8d5ab911ac8b4e8eb9028d40615f631d8fd3dc23cd9e01c189