[INFO] cloning repository https://github.com/Algorhythm-sxv/chess-engine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Algorhythm-sxv/chess-engine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlgorhythm-sxv%2Fchess-engine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlgorhythm-sxv%2Fchess-engine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8a47caeceb9eee5b351a48012ceca1d97c30087a
[INFO] testing Algorhythm-sxv/chess-engine against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlgorhythm-sxv%2Fchess-engine" "/workspace/builds/worker-92/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-92/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Algorhythm-sxv/chess-engine on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Algorhythm-sxv/chess-engine
[INFO] finished tweaking git repo https://github.com/Algorhythm-sxv/chess-engine
[INFO] tweaked toml for git repo https://github.com/Algorhythm-sxv/chess-engine written to /workspace/builds/worker-92/source/Cargo.toml
[INFO] crate git repo https://github.com/Algorhythm-sxv/chess-engine already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3247b0b8a579813f85dde0707961be930a3815f4402411f0879eb97a0ec70aba
[INFO] running `Command { std: "docker" "start" "-a" "3247b0b8a579813f85dde0707961be930a3815f4402411f0879eb97a0ec70aba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3247b0b8a579813f85dde0707961be930a3815f4402411f0879eb97a0ec70aba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3247b0b8a579813f85dde0707961be930a3815f4402411f0879eb97a0ec70aba", kill_on_drop: false }`
[INFO] [stdout] 3247b0b8a579813f85dde0707961be930a3815f4402411f0879eb97a0ec70aba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5ffc7f49bae50ea17edd9ce25ca435888e650d03e2c62399ea9fd101c6a0a245
[INFO] running `Command { std: "docker" "start" "-a" "5ffc7f49bae50ea17edd9ce25ca435888e650d03e2c62399ea9fd101c6a0a245", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling chess-engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant is never used: `D_FILE`
[INFO] [stdout]    --> src/lookup_tables.rs:103:1
[INFO] [stdout]     |
[INFO] [stdout] 103 | pub const D_FILE: u64 = 0x0808080808080808;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `E_FILE`
[INFO] [stdout]    --> src/lookup_tables.rs:104:1
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub const E_FILE: u64 = 0x1010101010101010;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `FIRST_RANK`
[INFO] [stdout]    --> src/lookup_tables.rs:109:1
[INFO] [stdout]     |
[INFO] [stdout] 109 | pub const FIRST_RANK: u64 = 0x00000000000000FF;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `FOURTH_RANK`
[INFO] [stdout]    --> src/lookup_tables.rs:112:1
[INFO] [stdout]     |
[INFO] [stdout] 112 | pub const FOURTH_RANK: u64 = 0x00000000FF000000;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `FIFTH_RANK`
[INFO] [stdout]    --> src/lookup_tables.rs:113:1
[INFO] [stdout]     |
[INFO] [stdout] 113 | pub const FIFTH_RANK: u64 = 0x000000FF00000000;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `EIGHTH_RANK`
[INFO] [stdout]    --> src/lookup_tables.rs:116:1
[INFO] [stdout]     |
[INFO] [stdout] 116 | pub const EIGHTH_RANK: u64 = 0xFF00000000000000;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `null`
[INFO] [stdout]    --> src/types.rs:153:12
[INFO] [stdout]     |
[INFO] [stdout] 153 |     pub fn null() -> Self {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_null`
[INFO] [stdout]    --> src/types.rs:157:12
[INFO] [stdout]     |
[INFO] [stdout] 157 |     pub fn is_null(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_algebraic_notation`
[INFO] [stdout]    --> src/types.rs:161:12
[INFO] [stdout]     |
[INFO] [stdout] 161 |     pub fn to_algebraic_notation(&self) -> String {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_bitboard`
[INFO] [stdout]  --> src/utils.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn print_bitboard(board: u64) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 17.87s
[INFO] running `Command { std: "docker" "inspect" "5ffc7f49bae50ea17edd9ce25ca435888e650d03e2c62399ea9fd101c6a0a245", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ffc7f49bae50ea17edd9ce25ca435888e650d03e2c62399ea9fd101c6a0a245", kill_on_drop: false }`
[INFO] [stdout] 5ffc7f49bae50ea17edd9ce25ca435888e650d03e2c62399ea9fd101c6a0a245
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bd267c4f613cedc980fa6aaf3fa6064b98843cfae242ccfc680dbbbcc528ff2e
[INFO] running `Command { std: "docker" "start" "-a" "bd267c4f613cedc980fa6aaf3fa6064b98843cfae242ccfc680dbbbcc528ff2e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling chess-engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant is never used: `D_FILE`
[INFO] [stdout]    --> src/lookup_tables.rs:103:1
[INFO] [stdout]     |
[INFO] [stdout] 103 | pub const D_FILE: u64 = 0x0808080808080808;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `E_FILE`
[INFO] [stdout]    --> src/lookup_tables.rs:104:1
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub const E_FILE: u64 = 0x1010101010101010;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `FIRST_RANK`
[INFO] [stdout]    --> src/lookup_tables.rs:109:1
[INFO] [stdout]     |
[INFO] [stdout] 109 | pub const FIRST_RANK: u64 = 0x00000000000000FF;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `FOURTH_RANK`
[INFO] [stdout]    --> src/lookup_tables.rs:112:1
[INFO] [stdout]     |
[INFO] [stdout] 112 | pub const FOURTH_RANK: u64 = 0x00000000FF000000;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `FIFTH_RANK`
[INFO] [stdout]    --> src/lookup_tables.rs:113:1
[INFO] [stdout]     |
[INFO] [stdout] 113 | pub const FIFTH_RANK: u64 = 0x000000FF00000000;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `EIGHTH_RANK`
[INFO] [stdout]    --> src/lookup_tables.rs:116:1
[INFO] [stdout]     |
[INFO] [stdout] 116 | pub const EIGHTH_RANK: u64 = 0xFF00000000000000;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `null`
[INFO] [stdout]    --> src/types.rs:153:12
[INFO] [stdout]     |
[INFO] [stdout] 153 |     pub fn null() -> Self {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_null`
[INFO] [stdout]    --> src/types.rs:157:12
[INFO] [stdout]     |
[INFO] [stdout] 157 |     pub fn is_null(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_algebraic_notation`
[INFO] [stdout]    --> src/types.rs:161:12
[INFO] [stdout]     |
[INFO] [stdout] 161 |     pub fn to_algebraic_notation(&self) -> String {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_bitboard`
[INFO] [stdout]  --> src/utils.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn print_bitboard(board: u64) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [optimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "bd267c4f613cedc980fa6aaf3fa6064b98843cfae242ccfc680dbbbcc528ff2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd267c4f613cedc980fa6aaf3fa6064b98843cfae242ccfc680dbbbcc528ff2e", kill_on_drop: false }`
[INFO] [stdout] bd267c4f613cedc980fa6aaf3fa6064b98843cfae242ccfc680dbbbcc528ff2e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 71225df2982c1999553d23d53736d09e8eaead726858d00469afb3978668de22
[INFO] running `Command { std: "docker" "start" "-a" "71225df2982c1999553d23d53736d09e8eaead726858d00469afb3978668de22", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: constant is never used: `D_FILE`
[INFO] [stderr]    --> src/lookup_tables.rs:103:1
[INFO] [stderr]     |
[INFO] [stderr] 103 | pub const D_FILE: u64 = 0x0808080808080808;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `E_FILE`
[INFO] [stderr]    --> src/lookup_tables.rs:104:1
[INFO] [stderr]     |
[INFO] [stderr] 104 | pub const E_FILE: u64 = 0x1010101010101010;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `FIRST_RANK`
[INFO] [stderr]    --> src/lookup_tables.rs:109:1
[INFO] [stderr]     |
[INFO] [stderr] 109 | pub const FIRST_RANK: u64 = 0x00000000000000FF;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `FOURTH_RANK`
[INFO] [stderr]    --> src/lookup_tables.rs:112:1
[INFO] [stderr]     |
[INFO] [stderr] 112 | pub const FOURTH_RANK: u64 = 0x00000000FF000000;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `FIFTH_RANK`
[INFO] [stderr]    --> src/lookup_tables.rs:113:1
[INFO] [stderr]     |
[INFO] [stderr] 113 | pub const FIFTH_RANK: u64 = 0x000000FF00000000;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `EIGHTH_RANK`
[INFO] [stderr]    --> src/lookup_tables.rs:116:1
[INFO] [stderr]     |
[INFO] [stderr] 116 | pub const EIGHTH_RANK: u64 = 0xFF00000000000000;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `null`
[INFO] [stderr]    --> src/types.rs:153:12
[INFO] [stderr]     |
[INFO] [stderr] 153 |     pub fn null() -> Self {
[INFO] [stderr]     |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_null`
[INFO] [stderr]    --> src/types.rs:157:12
[INFO] [stderr]     |
[INFO] [stderr] 157 |     pub fn is_null(&self) -> bool {
[INFO] [stderr]     |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `to_algebraic_notation`
[INFO] [stderr]    --> src/types.rs:161:12
[INFO] [stderr]     |
[INFO] [stderr] 161 |     pub fn to_algebraic_notation(&self) -> String {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_bitboard`
[INFO] [stderr]  --> src/utils.rs:2:8
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub fn print_bitboard(board: u64) {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `chess-engine` (bin "chess-engine" test) generated 10 warnings
[INFO] [stderr]     Finished test [optimized + debuginfo] target(s) in 0.55s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/chess_engine-14d14d18a4a4decc)
[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" "71225df2982c1999553d23d53736d09e8eaead726858d00469afb3978668de22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71225df2982c1999553d23d53736d09e8eaead726858d00469afb3978668de22", kill_on_drop: false }`
[INFO] [stdout] 71225df2982c1999553d23d53736d09e8eaead726858d00469afb3978668de22