[INFO] cloning repository https://github.com/aolagers/rook
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aolagers/rook" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faolagers%2Frook", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faolagers%2Frook'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b47dab0b07ede2f3fd8195dc2d58fb6ab6416d93
[INFO] checking aolagers/rook against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faolagers%2Frook" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aolagers/rook on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/aolagers/rook
[INFO] finished tweaking git repo https://github.com/aolagers/rook
[INFO] tweaked toml for git repo https://github.com/aolagers/rook written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/aolagers/rook already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: the lock file /workspace/builds/worker-10/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae355d981f716c718fd63664eca14645d0008b4841b49225f8ecd7dcd68304ac
[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" "ae355d981f716c718fd63664eca14645d0008b4841b49225f8ecd7dcd68304ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae355d981f716c718fd63664eca14645d0008b4841b49225f8ecd7dcd68304ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae355d981f716c718fd63664eca14645d0008b4841b49225f8ecd7dcd68304ac", kill_on_drop: false }`
[INFO] [stdout] ae355d981f716c718fd63664eca14645d0008b4841b49225f8ecd7dcd68304ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 017e6f59ad7ef5e65716246353f748c1f3a41150e38656094bb12af35bb854fa
[INFO] running `Command { std: "docker" "start" "-a" "017e6f59ad7ef5e65716246353f748c1f3a41150e38656094bb12af35bb854fa", kill_on_drop: false }`
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking rook v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/board.rs:133:48
[INFO] [stdout]     |
[INFO] [stdout] 133 |                 let sq = BitBoard::from_square(((7-i)*8 + j));
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/pos.rs:87:25
[INFO] [stdout]    |
[INFO] [stdout] 87 |                 n @ '0' ... '8' => {
[INFO] [stdout]    |                         ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/board.rs:133:48
[INFO] [stdout]     |
[INFO] [stdout] 133 |                 let sq = BitBoard::from_square(((7-i)*8 + j));
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/pos.rs:87:25
[INFO] [stdout]    |
[INFO] [stdout] 87 |                 n @ '0' ... '8' => {
[INFO] [stdout]    |                         ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/movegenerator.rs:225:1
[INFO] [stdout]     |
[INFO] [stdout] 225 | / lazy_static! {
[INFO] [stdout] 226 | |     static ref KNIGHT_MOVES: [BitBoard; 64] = {
[INFO] [stdout] 227 | |         let mut kmoves = [BitBoard::empty(); 64];
[INFO] [stdout] 228 | |         for i in 0..64 {
[INFO] [stdout] ...   |
[INFO] [stdout] 291 | |     };
[INFO] [stdout] 292 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/movegenerator.rs:225:1
[INFO] [stdout]     |
[INFO] [stdout] 225 | / lazy_static! {
[INFO] [stdout] 226 | |     static ref KNIGHT_MOVES: [BitBoard; 64] = {
[INFO] [stdout] 227 | |         let mut kmoves = [BitBoard::empty(); 64];
[INFO] [stdout] 228 | |         for i in 0..64 {
[INFO] [stdout] ...   |
[INFO] [stdout] 291 | |     };
[INFO] [stdout] 292 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/movegenerator.rs:225:1
[INFO] [stdout]     |
[INFO] [stdout] 225 | / lazy_static! {
[INFO] [stdout] 226 | |     static ref KNIGHT_MOVES: [BitBoard; 64] = {
[INFO] [stdout] 227 | |         let mut kmoves = [BitBoard::empty(); 64];
[INFO] [stdout] 228 | |         for i in 0..64 {
[INFO] [stdout] ...   |
[INFO] [stdout] 291 | |     };
[INFO] [stdout] 292 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/movegenerator.rs:225:1
[INFO] [stdout]     |
[INFO] [stdout] 225 | / lazy_static! {
[INFO] [stdout] 226 | |     static ref KNIGHT_MOVES: [BitBoard; 64] = {
[INFO] [stdout] 227 | |         let mut kmoves = [BitBoard::empty(); 64];
[INFO] [stdout] 228 | |         for i in 0..64 {
[INFO] [stdout] ...   |
[INFO] [stdout] 291 | |     };
[INFO] [stdout] 292 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/movegenerator.rs:225:1
[INFO] [stdout]     |
[INFO] [stdout] 225 | / lazy_static! {
[INFO] [stdout] 226 | |     static ref KNIGHT_MOVES: [BitBoard; 64] = {
[INFO] [stdout] 227 | |         let mut kmoves = [BitBoard::empty(); 64];
[INFO] [stdout] 228 | |         for i in 0..64 {
[INFO] [stdout] ...   |
[INFO] [stdout] 291 | |     };
[INFO] [stdout] 292 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/movegenerator.rs:225:1
[INFO] [stdout]     |
[INFO] [stdout] 225 | / lazy_static! {
[INFO] [stdout] 226 | |     static ref KNIGHT_MOVES: [BitBoard; 64] = {
[INFO] [stdout] 227 | |         let mut kmoves = [BitBoard::empty(); 64];
[INFO] [stdout] 228 | |         for i in 0..64 {
[INFO] [stdout] ...   |
[INFO] [stdout] 291 | |     };
[INFO] [stdout] 292 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/movegenerator.rs:225:1
[INFO] [stdout]     |
[INFO] [stdout] 225 | / lazy_static! {
[INFO] [stdout] 226 | |     static ref KNIGHT_MOVES: [BitBoard; 64] = {
[INFO] [stdout] 227 | |         let mut kmoves = [BitBoard::empty(); 64];
[INFO] [stdout] 228 | |         for i in 0..64 {
[INFO] [stdout] ...   |
[INFO] [stdout] 291 | |     };
[INFO] [stdout] 292 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/hash.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | / lazy_static! {
[INFO] [stdout] 50 | |     static ref HASH: Mutex<HashMap<u64, u64>> = {
[INFO] [stdout] 51 | |         Mutex::new(HashMap::new())
[INFO] [stdout] 52 | |     };
[INFO] [stdout] ...  |
[INFO] [stdout] 65 | |     };
[INFO] [stdout] 66 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/movegenerator.rs:225:1
[INFO] [stdout]     |
[INFO] [stdout] 225 | / lazy_static! {
[INFO] [stdout] 226 | |     static ref KNIGHT_MOVES: [BitBoard; 64] = {
[INFO] [stdout] 227 | |         let mut kmoves = [BitBoard::empty(); 64];
[INFO] [stdout] 228 | |         for i in 0..64 {
[INFO] [stdout] ...   |
[INFO] [stdout] 291 | |     };
[INFO] [stdout] 292 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/hash.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | / lazy_static! {
[INFO] [stdout] 50 | |     static ref HASH: Mutex<HashMap<u64, u64>> = {
[INFO] [stdout] 51 | |         Mutex::new(HashMap::new())
[INFO] [stdout] 52 | |     };
[INFO] [stdout] ...  |
[INFO] [stdout] 65 | |     };
[INFO] [stdout] 66 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/movegenerator.rs:225:1
[INFO] [stdout]     |
[INFO] [stdout] 225 | / lazy_static! {
[INFO] [stdout] 226 | |     static ref KNIGHT_MOVES: [BitBoard; 64] = {
[INFO] [stdout] 227 | |         let mut kmoves = [BitBoard::empty(); 64];
[INFO] [stdout] 228 | |         for i in 0..64 {
[INFO] [stdout] ...   |
[INFO] [stdout] 291 | |     };
[INFO] [stdout] 292 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/movegenerator.rs:225:1
[INFO] [stdout]     |
[INFO] [stdout] 225 | / lazy_static! {
[INFO] [stdout] 226 | |     static ref KNIGHT_MOVES: [BitBoard; 64] = {
[INFO] [stdout] 227 | |         let mut kmoves = [BitBoard::empty(); 64];
[INFO] [stdout] 228 | |         for i in 0..64 {
[INFO] [stdout] ...   |
[INFO] [stdout] 291 | |     };
[INFO] [stdout] 292 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/movegenerator.rs:225:1
[INFO] [stdout]     |
[INFO] [stdout] 225 | / lazy_static! {
[INFO] [stdout] 226 | |     static ref KNIGHT_MOVES: [BitBoard; 64] = {
[INFO] [stdout] 227 | |         let mut kmoves = [BitBoard::empty(); 64];
[INFO] [stdout] 228 | |         for i in 0..64 {
[INFO] [stdout] ...   |
[INFO] [stdout] 291 | |     };
[INFO] [stdout] 292 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/movegenerator.rs:225:1
[INFO] [stdout]     |
[INFO] [stdout] 225 | / lazy_static! {
[INFO] [stdout] 226 | |     static ref KNIGHT_MOVES: [BitBoard; 64] = {
[INFO] [stdout] 227 | |         let mut kmoves = [BitBoard::empty(); 64];
[INFO] [stdout] 228 | |         for i in 0..64 {
[INFO] [stdout] ...   |
[INFO] [stdout] 291 | |     };
[INFO] [stdout] 292 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/hash.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | / lazy_static! {
[INFO] [stdout] 50 | |     static ref HASH: Mutex<HashMap<u64, u64>> = {
[INFO] [stdout] 51 | |         Mutex::new(HashMap::new())
[INFO] [stdout] 52 | |     };
[INFO] [stdout] ...  |
[INFO] [stdout] 65 | |     };
[INFO] [stdout] 66 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/hash.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | / lazy_static! {
[INFO] [stdout] 50 | |     static ref HASH: Mutex<HashMap<u64, u64>> = {
[INFO] [stdout] 51 | |         Mutex::new(HashMap::new())
[INFO] [stdout] 52 | |     };
[INFO] [stdout] ...  |
[INFO] [stdout] 65 | |     };
[INFO] [stdout] 66 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nodes`
[INFO] [stdout]   --> src/lib.rs:61:13
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let (_, nodes, best_move) = game.negamax_start(4);
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_nodes`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nodes`
[INFO] [stdout]   --> src/lib.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let (_, nodes, best_move) = game.negamax_start(4);
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_nodes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nodes`
[INFO] [stdout]   --> src/lib.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |     let (_, nodes, best_move) = game.negamax_start(4);
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_nodes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nodes`
[INFO] [stdout]   --> src/lib.rs:84:13
[INFO] [stdout]    |
[INFO] [stdout] 84 |     let (_, nodes, best_move) = game.negamax_start(4);
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_nodes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let mut game = Pos::from_fen("8/8/8/8/8/ppp5/2p5/K7 w KQkq - 0 1");
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |     let mut game = Pos::from_fen("P7/P7/P7/P7/P7/P7/P6r/KP5r w KQkq - 0 1");
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.40s
[INFO] running `Command { std: "docker" "inspect" "017e6f59ad7ef5e65716246353f748c1f3a41150e38656094bb12af35bb854fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "017e6f59ad7ef5e65716246353f748c1f3a41150e38656094bb12af35bb854fa", kill_on_drop: false }`
[INFO] [stdout] 017e6f59ad7ef5e65716246353f748c1f3a41150e38656094bb12af35bb854fa