[INFO] cloning repository https://github.com/HGHimself/tictactoe
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/HGHimself/tictactoe" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHGHimself%2Ftictactoe", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHGHimself%2Ftictactoe'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0d8db819b2ceb29d905b786aa52fe242268daa9e
[INFO] testing HGHimself/tictactoe against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHGHimself%2Ftictactoe" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/HGHimself/tictactoe on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/HGHimself/tictactoe
[INFO] finished tweaking git repo https://github.com/HGHimself/tictactoe
[INFO] tweaked toml for git repo https://github.com/HGHimself/tictactoe written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/HGHimself/tictactoe already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 50f6826b1db06a6fe2e6d9d4424b063ebfd0a04ad73288acccef51b3b6eb0610
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "50f6826b1db06a6fe2e6d9d4424b063ebfd0a04ad73288acccef51b3b6eb0610", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "50f6826b1db06a6fe2e6d9d4424b063ebfd0a04ad73288acccef51b3b6eb0610", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50f6826b1db06a6fe2e6d9d4424b063ebfd0a04ad73288acccef51b3b6eb0610", kill_on_drop: false }`
[INFO] [stdout] 50f6826b1db06a6fe2e6d9d4424b063ebfd0a04ad73288acccef51b3b6eb0610
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 26330f6e7a03ce1789ed39c2206572b750cbff8124dda91758507087ed42a077
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "26330f6e7a03ce1789ed39c2206572b750cbff8124dda91758507087ed42a077", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.68
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling syn v1.0.45
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling bumpalo v3.4.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.68
[INFO] [stderr]    Compiling regex-syntax v0.6.20
[INFO] [stderr]    Compiling aho-corasick v0.7.14
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling regex v1.4.1
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.68
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.68
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.68
[INFO] [stderr]    Compiling tictactoe v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::cmp`
[INFO] [stdout]  --> src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::cmp;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/heuristic_counter.rs:161:8
[INFO] [stdout]     |
[INFO] [stdout] 161 |     if (x_4_in_row(input) != 0) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/heuristic_counter.rs:164:8
[INFO] [stdout]     |
[INFO] [stdout] 164 |     if (o_4_in_row(input) != 0) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/heuristic_counter.rs:172:14
[INFO] [stdout]     |
[INFO] [stdout] 172 |     count += (x_2_empty_2_in_row(input) + x_1_empty_2_in_row(input)); //[# of open-2-in-a-row for me]
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/heuristic_counter.rs:173:14
[INFO] [stdout]     |
[INFO] [stdout] 173 |     count -= (o_2_empty_2_in_row(input) + o_1_empty_2_in_row(input)); //[# of open-2-in-a-row for opponent]
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/heuristic_counter.rs:179:8
[INFO] [stdout]     |
[INFO] [stdout] 179 |     if (o_4_in_row(input) != 0) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/heuristic_counter.rs:182:8
[INFO] [stdout]     |
[INFO] [stdout] 182 |     if (x_4_in_row(input) != 0) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/heuristic_counter.rs:190:14
[INFO] [stdout]     |
[INFO] [stdout] 190 |     count += (o_2_empty_2_in_row(input) + o_1_empty_2_in_row(input)); //[# of open-2-in-a-row for me]
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/heuristic_counter.rs:191:14
[INFO] [stdout]     |
[INFO] [stdout] 191 |     count -= (x_2_empty_2_in_row(input) + x_1_empty_2_in_row(input)); //[# of open-2-in-a-row for opponent]
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/lib.rs:82:28
[INFO] [stdout]    |
[INFO] [stdout] 82 |         heuristic_total += (v_heuristic + h_heuristic);
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/lib.rs:107:28
[INFO] [stdout]     |
[INFO] [stdout] 107 |         heuristic_total += (v_heuristic + h_heuristic);
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:247:22
[INFO] [stdout]     |
[INFO] [stdout] 247 |                 let (x, y) = gen_random(self.length);
[INFO] [stdout]     |                      ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/lib.rs:247:25
[INFO] [stdout]     |
[INFO] [stdout] 247 |                 let (x, y) = gen_random(self.length);
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `player`
[INFO] [stdout]   --> src/lib.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     player: Symbol,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `opponent`
[INFO] [stdout]   --> src/lib.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     opponent: Symbol,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `winner`
[INFO] [stdout]   --> src/lib.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     winner: Symbol,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_board`
[INFO] [stdout]    --> src/lib.rs:325:8
[INFO] [stdout]     |
[INFO] [stdout] 325 |     fn get_board(&self) -> &Board {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.75s
[INFO] running `Command { std: "docker" "inspect" "26330f6e7a03ce1789ed39c2206572b750cbff8124dda91758507087ed42a077", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26330f6e7a03ce1789ed39c2206572b750cbff8124dda91758507087ed42a077", kill_on_drop: false }`
[INFO] [stdout] 26330f6e7a03ce1789ed39c2206572b750cbff8124dda91758507087ed42a077
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 84b41e746fbf3f55fa8f66adbc261eaddb2090edaf7faa8457d1dd3f553f32be
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "84b41e746fbf3f55fa8f66adbc261eaddb2090edaf7faa8457d1dd3f553f32be", kill_on_drop: false }`
[INFO] [stderr]    Compiling tictactoe v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::cmp`
[INFO] [stdout]  --> src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::cmp;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/heuristic_counter.rs:161:8
[INFO] [stdout]     |
[INFO] [stdout] 161 |     if (x_4_in_row(input) != 0) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/heuristic_counter.rs:164:8
[INFO] [stdout]     |
[INFO] [stdout] 164 |     if (o_4_in_row(input) != 0) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/heuristic_counter.rs:172:14
[INFO] [stdout]     |
[INFO] [stdout] 172 |     count += (x_2_empty_2_in_row(input) + x_1_empty_2_in_row(input)); //[# of open-2-in-a-row for me]
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/heuristic_counter.rs:173:14
[INFO] [stdout]     |
[INFO] [stdout] 173 |     count -= (o_2_empty_2_in_row(input) + o_1_empty_2_in_row(input)); //[# of open-2-in-a-row for opponent]
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/heuristic_counter.rs:179:8
[INFO] [stdout]     |
[INFO] [stdout] 179 |     if (o_4_in_row(input) != 0) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/heuristic_counter.rs:182:8
[INFO] [stdout]     |
[INFO] [stdout] 182 |     if (x_4_in_row(input) != 0) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/heuristic_counter.rs:190:14
[INFO] [stdout]     |
[INFO] [stdout] 190 |     count += (o_2_empty_2_in_row(input) + o_1_empty_2_in_row(input)); //[# of open-2-in-a-row for me]
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/heuristic_counter.rs:191:14
[INFO] [stdout]     |
[INFO] [stdout] 191 |     count -= (x_2_empty_2_in_row(input) + x_1_empty_2_in_row(input)); //[# of open-2-in-a-row for opponent]
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/lib.rs:82:28
[INFO] [stdout]    |
[INFO] [stdout] 82 |         heuristic_total += (v_heuristic + h_heuristic);
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/lib.rs:107:28
[INFO] [stdout]     |
[INFO] [stdout] 107 |         heuristic_total += (v_heuristic + h_heuristic);
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:247:22
[INFO] [stdout]     |
[INFO] [stdout] 247 |                 let (x, y) = gen_random(self.length);
[INFO] [stdout]     |                      ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/lib.rs:247:25
[INFO] [stdout]     |
[INFO] [stdout] 247 |                 let (x, y) = gen_random(self.length);
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `player`
[INFO] [stdout]   --> src/lib.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     player: Symbol,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `opponent`
[INFO] [stdout]   --> src/lib.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     opponent: Symbol,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `winner`
[INFO] [stdout]   --> src/lib.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     winner: Symbol,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_board`
[INFO] [stdout]    --> src/lib.rs:325:8
[INFO] [stdout]     |
[INFO] [stdout] 325 |     fn get_board(&self) -> &Board {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp`
[INFO] [stdout]  --> src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::cmp;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/heuristic_counter.rs:161:8
[INFO] [stdout]     |
[INFO] [stdout] 161 |     if (x_4_in_row(input) != 0) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/heuristic_counter.rs:164:8
[INFO] [stdout]     |
[INFO] [stdout] 164 |     if (o_4_in_row(input) != 0) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/heuristic_counter.rs:172:14
[INFO] [stdout]     |
[INFO] [stdout] 172 |     count += (x_2_empty_2_in_row(input) + x_1_empty_2_in_row(input)); //[# of open-2-in-a-row for me]
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/heuristic_counter.rs:173:14
[INFO] [stdout]     |
[INFO] [stdout] 173 |     count -= (o_2_empty_2_in_row(input) + o_1_empty_2_in_row(input)); //[# of open-2-in-a-row for opponent]
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/heuristic_counter.rs:179:8
[INFO] [stdout]     |
[INFO] [stdout] 179 |     if (o_4_in_row(input) != 0) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/heuristic_counter.rs:182:8
[INFO] [stdout]     |
[INFO] [stdout] 182 |     if (x_4_in_row(input) != 0) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/heuristic_counter.rs:190:14
[INFO] [stdout]     |
[INFO] [stdout] 190 |     count += (o_2_empty_2_in_row(input) + o_1_empty_2_in_row(input)); //[# of open-2-in-a-row for me]
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/heuristic_counter.rs:191:14
[INFO] [stdout]     |
[INFO] [stdout] 191 |     count -= (x_2_empty_2_in_row(input) + x_1_empty_2_in_row(input)); //[# of open-2-in-a-row for opponent]
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/heuristic_counter.rs:543:18
[INFO] [stdout]     |
[INFO] [stdout] 543 |         count += (x_2_empty_2_in_row(input) + x_1_empty_2_in_row(input)); //[# of open-2-in-a-row for me]
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/heuristic_counter.rs:545:18
[INFO] [stdout]     |
[INFO] [stdout] 545 |         count -= (o_2_empty_2_in_row(input) + o_1_empty_2_in_row(input)); //[# of open-2-in-a-row for opponent]
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/lib.rs:82:28
[INFO] [stdout]    |
[INFO] [stdout] 82 |         heuristic_total += (v_heuristic + h_heuristic);
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/lib.rs:107:28
[INFO] [stdout]     |
[INFO] [stdout] 107 |         heuristic_total += (v_heuristic + h_heuristic);
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:247:22
[INFO] [stdout]     |
[INFO] [stdout] 247 |                 let (x, y) = gen_random(self.length);
[INFO] [stdout]     |                      ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/lib.rs:247:25
[INFO] [stdout]     |
[INFO] [stdout] 247 |                 let (x, y) = gen_random(self.length);
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `player`
[INFO] [stdout]   --> src/lib.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     player: Symbol,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `opponent`
[INFO] [stdout]   --> src/lib.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     opponent: Symbol,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `winner`
[INFO] [stdout]   --> src/lib.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     winner: Symbol,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.66s
[INFO] running `Command { std: "docker" "inspect" "84b41e746fbf3f55fa8f66adbc261eaddb2090edaf7faa8457d1dd3f553f32be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84b41e746fbf3f55fa8f66adbc261eaddb2090edaf7faa8457d1dd3f553f32be", kill_on_drop: false }`
[INFO] [stdout] 84b41e746fbf3f55fa8f66adbc261eaddb2090edaf7faa8457d1dd3f553f32be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e50b39af4b7b5db1687c1c08793358ba38af43551c59ea943acaa27d530b67b4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e50b39af4b7b5db1687c1c08793358ba38af43551c59ea943acaa27d530b67b4", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused import: `std::cmp`
[INFO] [stdout] running 11 tests
[INFO] [stderr]  --> src/lib.rs:2:5
[INFO] [stdout] test test::test_xy_to_linear ... ok
[INFO] [stderr]   |
[INFO] [stdout] test test::test_move ... ok
[INFO] [stderr] 2 | use std::cmp;
[INFO] [stdout] test test::test_get_all_potential_moves ... ok
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]    --> src/heuristic_counter.rs:161:8
[INFO] [stderr]     |
[INFO] [stderr] 161 |     if (x_4_in_row(input) != 0) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]    --> src/heuristic_counter.rs:164:8
[INFO] [stderr]     |
[INFO] [stderr] 164 |     if (o_4_in_row(input) != 0) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/heuristic_counter.rs:172:14
[INFO] [stderr]     |
[INFO] [stderr] 172 |     count += (x_2_empty_2_in_row(input) + x_1_empty_2_in_row(input)); //[# of open-2-in-a-row for me]
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/heuristic_counter.rs:173:14
[INFO] [stderr]     |
[INFO] [stderr] 173 |     count -= (o_2_empty_2_in_row(input) + o_1_empty_2_in_row(input)); //[# of open-2-in-a-row for opponent]
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]    --> src/heuristic_counter.rs:179:8
[INFO] [stderr]     |
[INFO] [stderr] 179 |     if (o_4_in_row(input) != 0) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]    --> src/heuristic_counter.rs:182:8
[INFO] [stderr]     |
[INFO] [stderr] 182 |     if (x_4_in_row(input) != 0) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/heuristic_counter.rs:190:14
[INFO] [stderr]     |
[INFO] [stderr] 190 |     count += (o_2_empty_2_in_row(input) + o_1_empty_2_in_row(input)); //[# of open-2-in-a-row for me]
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/heuristic_counter.rs:191:14
[INFO] [stderr]     |
[INFO] [stderr] 191 |     count -= (x_2_empty_2_in_row(input) + x_1_empty_2_in_row(input)); //[# of open-2-in-a-row for opponent]
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/lib.rs:82:28
[INFO] [stderr]    |
[INFO] [stderr] 82 |         heuristic_total += (v_heuristic + h_heuristic);
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/lib.rs:107:28
[INFO] [stderr]     |
[INFO] [stderr] 107 |         heuristic_total += (v_heuristic + h_heuristic);
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/lib.rs:247:22
[INFO] [stderr]     |
[INFO] [stderr] 247 |                 let (x, y) = gen_random(self.length);
[INFO] [stderr]     |                      ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/lib.rs:247:25
[INFO] [stderr]     |
[INFO] [stderr] 247 |                 let (x, y) = gen_random(self.length);
[INFO] [stderr]     |                         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `player`
[INFO] [stderr]   --> src/lib.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     player: Symbol,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `opponent`
[INFO] [stderr]   --> src/lib.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     opponent: Symbol,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `winner`
[INFO] [stderr]   --> src/lib.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     winner: Symbol,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_board`
[INFO] [stderr]    --> src/lib.rs:325:8
[INFO] [stderr]     |
[INFO] [stderr] 325 |     fn get_board(&self) -> &Board {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 17 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp`
[INFO] [stderr]  --> src/lib.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::cmp;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]    --> src/heuristic_counter.rs:161:8
[INFO] [stderr]     |
[INFO] [stderr] 161 |     if (x_4_in_row(input) != 0) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]    --> src/heuristic_counter.rs:164:8
[INFO] [stderr]     |
[INFO] [stderr] 164 |     if (o_4_in_row(input) != 0) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/heuristic_counter.rs:172:14
[INFO] [stderr]     |
[INFO] [stderr] 172 |     count += (x_2_empty_2_in_row(input) + x_1_empty_2_in_row(input)); //[# of open-2-in-a-row for me]
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/heuristic_counter.rs:173:14
[INFO] [stderr]     |
[INFO] [stderr] 173 |     count -= (o_2_empty_2_in_row(input) + o_1_empty_2_in_row(input)); //[# of open-2-in-a-row for opponent]
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]    --> src/heuristic_counter.rs:179:8
[INFO] [stderr]     |
[INFO] [stderr] 179 |     if (o_4_in_row(input) != 0) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]    --> src/heuristic_counter.rs:182:8
[INFO] [stderr]     |
[INFO] [stderr] 182 |     if (x_4_in_row(input) != 0) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/heuristic_counter.rs:190:14
[INFO] [stderr]     |
[INFO] [stderr] 190 |     count += (o_2_empty_2_in_row(input) + o_1_empty_2_in_row(input)); //[# of open-2-in-a-row for me]
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/heuristic_counter.rs:191:14
[INFO] [stderr]     |
[INFO] [stderr] 191 |     count -= (x_2_empty_2_in_row(input) + x_1_empty_2_in_row(input)); //[# of open-2-in-a-row for opponent]
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/heuristic_counter.rs:543:18
[INFO] [stderr]     |
[INFO] [stderr] 543 |         count += (x_2_empty_2_in_row(input) + x_1_empty_2_in_row(input)); //[# of open-2-in-a-row for me]
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/heuristic_counter.rs:545:18
[INFO] [stderr]     |
[INFO] [stderr] 545 |         count -= (o_2_empty_2_in_row(input) + o_1_empty_2_in_row(input)); //[# of open-2-in-a-row for opponent]
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/lib.rs:82:28
[INFO] [stderr]    |
[INFO] [stderr] 82 |         heuristic_total += (v_heuristic + h_heuristic);
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/lib.rs:107:28
[INFO] [stderr]     |
[INFO] [stderr] 107 |         heuristic_total += (v_heuristic + h_heuristic);
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/lib.rs:247:22
[INFO] [stderr]     |
[INFO] [stderr] 247 |                 let (x, y) = gen_random(self.length);
[INFO] [stderr]     |                      ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/lib.rs:247:25
[INFO] [stderr]     |
[INFO] [stderr] 247 |                 let (x, y) = gen_random(self.length);
[INFO] [stderr]     |                         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `player`
[INFO] [stderr]   --> src/lib.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     player: Symbol,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `opponent`
[INFO] [stderr]   --> src/lib.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     opponent: Symbol,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `winner`
[INFO] [stderr]   --> src/lib.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     winner: Symbol,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 18 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tictactoe-747d8036b77e93c8)
[INFO] [stdout] test heuristic_counter::test::test_x_1_empty_3_in_row ... ok
[INFO] [stdout] test heuristic_counter::test::test_x_2_empty_3_in_row ... ok
[INFO] [stdout] test heuristic_counter::test::test_x_1_empty_2_in_row ... ok
[INFO] [stdout] test heuristic_counter::test::test_x_2_empty_2_in_row ... ok
[INFO] [stdout] test heuristic_counter::test::test_heuristic ... ok
[INFO] [stdout] test test::test_heuristic ... ok
[INFO] [stdout] test test::test_terminal ... ok
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tictactoe-3634595896034bd5)
[INFO] [stdout] test test::test_agent_move ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 11.76s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests tictactoe
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]    --> /opt/rustwide/workdir/src/heuristic_counter.rs:161:8
[INFO] [stderr]     |
[INFO] [stderr] 161 |     if (x_4_in_row(input) != 0) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]    --> /opt/rustwide/workdir/src/heuristic_counter.rs:164:8
[INFO] [stderr]     |
[INFO] [stderr] 164 |     if (o_4_in_row(input) != 0) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> /opt/rustwide/workdir/src/heuristic_counter.rs:172:14
[INFO] [stderr]     |
[INFO] [stderr] 172 |     count += (x_2_empty_2_in_row(input) + x_1_empty_2_in_row(input)); //[# of open-2-in-a-row for me]
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> /opt/rustwide/workdir/src/heuristic_counter.rs:173:14
[INFO] [stderr]     |
[INFO] [stderr] 173 |     count -= (o_2_empty_2_in_row(input) + o_1_empty_2_in_row(input)); //[# of open-2-in-a-row for opponent]
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]    --> /opt/rustwide/workdir/src/heuristic_counter.rs:179:8
[INFO] [stderr]     |
[INFO] [stderr] 179 |     if (o_4_in_row(input) != 0) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]    --> /opt/rustwide/workdir/src/heuristic_counter.rs:182:8
[INFO] [stderr]     |
[INFO] [stderr] 182 |     if (x_4_in_row(input) != 0) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> /opt/rustwide/workdir/src/heuristic_counter.rs:190:14
[INFO] [stderr]     |
[INFO] [stderr] 190 |     count += (o_2_empty_2_in_row(input) + o_1_empty_2_in_row(input)); //[# of open-2-in-a-row for me]
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> /opt/rustwide/workdir/src/heuristic_counter.rs:191:14
[INFO] [stderr]     |
[INFO] [stderr] 191 |     count -= (x_2_empty_2_in_row(input) + x_1_empty_2_in_row(input)); //[# of open-2-in-a-row for opponent]
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> /opt/rustwide/workdir/src/lib.rs:82:28
[INFO] [stderr]    |
[INFO] [stderr] 82 |         heuristic_total += (v_heuristic + h_heuristic);
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> /opt/rustwide/workdir/src/lib.rs:107:28
[INFO] [stderr]     |
[INFO] [stderr] 107 |         heuristic_total += (v_heuristic + h_heuristic);
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e50b39af4b7b5db1687c1c08793358ba38af43551c59ea943acaa27d530b67b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e50b39af4b7b5db1687c1c08793358ba38af43551c59ea943acaa27d530b67b4", kill_on_drop: false }`
[INFO] [stdout] e50b39af4b7b5db1687c1c08793358ba38af43551c59ea943acaa27d530b67b4