[INFO] cloning repository https://github.com/Aditya-1304/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/Aditya-1304/chess_engine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAditya-1304%2Fchess_engine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAditya-1304%2Fchess_engine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 33335626b3bb357d49d9df937ca29351284311f6
[INFO] testing Aditya-1304/chess_engine against beta-2026-03-05 for beta-1.95-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAditya-1304%2Fchess_engine" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Aditya-1304/chess_engine
[INFO] finished tweaking git repo https://github.com/Aditya-1304/chess_engine
[INFO] tweaked toml for git repo https://github.com/Aditya-1304/chess_engine written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Aditya-1304/chess_engine on toolchain beta-2026-03-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-03-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Aditya-1304/chess_engine already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-03-05" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-03-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d900b6b8b115ddb784462432f35587998a9efe738e13a1cd64844b10f7911291
[INFO] running `Command { std: "docker" "start" "-a" "d900b6b8b115ddb784462432f35587998a9efe738e13a1cd64844b10f7911291", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d900b6b8b115ddb784462432f35587998a9efe738e13a1cd64844b10f7911291", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d900b6b8b115ddb784462432f35587998a9efe738e13a1cd64844b10f7911291", kill_on_drop: false }`
[INFO] [stdout] d900b6b8b115ddb784462432f35587998a9efe738e13a1cd64844b10f7911291
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-03-05" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e797adb426ca8294a004d7bca3d6e0f714a016e1df19d6ed833a65c385abb027
[INFO] running `Command { std: "docker" "start" "-a" "e797adb426ca8294a004d7bca3d6e0f714a016e1df19d6ed833a65c385abb027", kill_on_drop: false }`
[INFO] [stderr]    Compiling zerocopy v0.8.27
[INFO] [stderr]    Compiling memmap2 v0.9.9
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling rand_core v0.9.3
[INFO] [stderr]    Compiling pyrrhic-rs v0.2.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling rand v0.9.2
[INFO] [stderr]    Compiling chess_engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `undo`
[INFO] [stdout]    --> src/board.rs:707:17
[INFO] [stdout]     |
[INFO] [stdout] 707 |             let undo = self.make_move(m);
[INFO] [stdout]     |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_undo`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `alpha` is never read
[INFO] [stdout]    --> src/search.rs:208:25
[INFO] [stdout]     |
[INFO] [stdout] 208 |         let mut alpha = -INF;
[INFO] [stdout]     |                         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `beta` is never read
[INFO] [stdout]    --> src/search.rs:209:24
[INFO] [stdout]     |
[INFO] [stdout] 209 |         let mut beta = INF;
[INFO] [stdout]     |                        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `net`
[INFO] [stdout]    --> src/nnue.rs:905:9
[INFO] [stdout]     |
[INFO] [stdout] 905 |     let net = match NETWORK.get() {
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_net`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `b_features` is assigned to, but never used
[INFO] [stdout]    --> src/nnue.rs:921:9
[INFO] [stdout]     |
[INFO] [stdout] 921 |     let mut b_features = 0usize;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_b_features` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b_features` is never read
[INFO] [stdout]    --> src/nnue.rs:929:13
[INFO] [stdout]     |
[INFO] [stdout] 929 |             b_features += count;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `key` and `learn` are never read
[INFO] [stdout]   --> src/book.rs:11:3
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Entry {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 11 |   key: u64,
[INFO] [stdout]    |   ^^^
[INFO] [stdout] ...
[INFO] [stdout] 14 |   learn: u32,
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Entry` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.74s
[INFO] running `Command { std: "docker" "inspect" "e797adb426ca8294a004d7bca3d6e0f714a016e1df19d6ed833a65c385abb027", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e797adb426ca8294a004d7bca3d6e0f714a016e1df19d6ed833a65c385abb027", kill_on_drop: false }`
[INFO] [stdout] e797adb426ca8294a004d7bca3d6e0f714a016e1df19d6ed833a65c385abb027
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-03-05" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 058d926438477451ec87fb49cb068754a510effe861bf0f83674d119a686327b
[INFO] running `Command { std: "docker" "start" "-a" "058d926438477451ec87fb49cb068754a510effe861bf0f83674d119a686327b", kill_on_drop: false }`
[INFO] [stdout] warning: unused variable: `undo`
[INFO] [stdout]    --> src/board.rs:707:17
[INFO] [stdout]     |
[INFO] [stdout] 707 |             let undo = self.make_move(m);
[INFO] [stdout]     |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_undo`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `alpha` is never read
[INFO] [stdout]    --> src/search.rs:208:25
[INFO] [stdout]     |
[INFO] [stdout] 208 |         let mut alpha = -INF;
[INFO] [stdout]     |                         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `beta` is never read
[INFO] [stdout]    --> src/search.rs:209:24
[INFO] [stdout]     |
[INFO] [stdout] 209 |         let mut beta = INF;
[INFO] [stdout]     |                        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling chess_engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `net`
[INFO] [stdout]    --> src/nnue.rs:905:9
[INFO] [stdout]     |
[INFO] [stdout] 905 |     let net = match NETWORK.get() {
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_net`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `b_features` is assigned to, but never used
[INFO] [stdout]    --> src/nnue.rs:921:9
[INFO] [stdout]     |
[INFO] [stdout] 921 |     let mut b_features = 0usize;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_b_features` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b_features` is never read
[INFO] [stdout]    --> src/nnue.rs:929:13
[INFO] [stdout]     |
[INFO] [stdout] 929 |             b_features += count;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `key` and `learn` are never read
[INFO] [stdout]   --> src/book.rs:11:3
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Entry {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 11 |   key: u64,
[INFO] [stdout]    |   ^^^
[INFO] [stdout] ...
[INFO] [stdout] 14 |   learn: u32,
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Entry` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `undo`
[INFO] [stdout]    --> src/board.rs:707:17
[INFO] [stdout]     |
[INFO] [stdout] 707 |             let undo = self.make_move(m);
[INFO] [stdout]     |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_undo`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `alpha` is never read
[INFO] [stdout]    --> src/search.rs:208:25
[INFO] [stdout]     |
[INFO] [stdout] 208 |         let mut alpha = -INF;
[INFO] [stdout]     |                         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `beta` is never read
[INFO] [stdout]    --> src/search.rs:209:24
[INFO] [stdout]     |
[INFO] [stdout] 209 |         let mut beta = INF;
[INFO] [stdout]     |                        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `net`
[INFO] [stdout]    --> src/nnue.rs:905:9
[INFO] [stdout]     |
[INFO] [stdout] 905 |     let net = match NETWORK.get() {
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_net`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `b_features` is assigned to, but never used
[INFO] [stdout]    --> src/nnue.rs:921:9
[INFO] [stdout]     |
[INFO] [stdout] 921 |     let mut b_features = 0usize;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_b_features` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b_features` is never read
[INFO] [stdout]    --> src/nnue.rs:929:13
[INFO] [stdout]     |
[INFO] [stdout] 929 |             b_features += count;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `key` and `learn` are never read
[INFO] [stdout]   --> src/book.rs:11:3
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Entry {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 11 |   key: u64,
[INFO] [stdout]    |   ^^^
[INFO] [stdout] ...
[INFO] [stdout] 14 |   learn: u32,
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Entry` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.39s
[INFO] running `Command { std: "docker" "inspect" "058d926438477451ec87fb49cb068754a510effe861bf0f83674d119a686327b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "058d926438477451ec87fb49cb068754a510effe861bf0f83674d119a686327b", kill_on_drop: false }`
[INFO] [stdout] 058d926438477451ec87fb49cb068754a510effe861bf0f83674d119a686327b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-03-05" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d3614c90b6c90c5d090f0bc380312f9067cce1d902a48fdcc65514829b86631f
[INFO] running `Command { std: "docker" "start" "-a" "d3614c90b6c90c5d090f0bc380312f9067cce1d902a48fdcc65514829b86631f", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `undo`
[INFO] [stderr]    --> src/board.rs:707:17
[INFO] [stderr]     |
[INFO] [stderr] 707 |             let undo = self.make_move(m);
[INFO] [stderr]     |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_undo`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `alpha` is never read
[INFO] [stderr]    --> src/search.rs:208:25
[INFO] [stderr]     |
[INFO] [stderr] 208 |         let mut alpha = -INF;
[INFO] [stderr]     |                         ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `beta` is never read
[INFO] [stderr]    --> src/search.rs:209:24
[INFO] [stderr]     |
[INFO] [stderr] 209 |         let mut beta = INF;
[INFO] [stderr]     |                        ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `net`
[INFO] [stderr]    --> src/nnue.rs:905:9
[INFO] [stderr]     |
[INFO] [stderr] 905 |     let net = match NETWORK.get() {
[INFO] [stderr]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_net`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `b_features` is assigned to, but never used
[INFO] [stderr]    --> src/nnue.rs:921:9
[INFO] [stderr]     |
[INFO] [stderr] 921 |     let mut b_features = 0usize;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: consider using `_b_features` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `b_features` is never read
[INFO] [stderr]    --> src/nnue.rs:929:13
[INFO] [stderr]     |
[INFO] [stderr] 929 |             b_features += count;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: fields `key` and `learn` are never read
[INFO] [stderr]   --> src/book.rs:11:3
[INFO] [stderr]    |
[INFO] [stderr] 10 | struct Entry {
[INFO] [stderr]    |        ----- fields in this struct
[INFO] [stderr] 11 |   key: u64,
[INFO] [stderr]    |   ^^^
[INFO] [stderr] ...
[INFO] [stderr] 14 |   learn: u32,
[INFO] [stderr]    |   ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Entry` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `chess_engine` (lib) generated 7 warnings (run `cargo fix --lib -p chess_engine` to apply 2 suggestions)
[INFO] [stderr] warning: `chess_engine` (lib test) generated 7 warnings (7 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/chess_engine-d089768b02a3b1e7)
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test board::tests::make_unmake_move ... ok
[INFO] [stdout] test board::tests::fen_round_trip ... ok
[INFO] [stderr] 
[INFO] [stderr] thread 'board::tests::perft_startpos' (29) panicked at src/movegen.rs:109:9:
[INFO] [stderr] null pointer dereference occurred
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x622d505b053a - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]    1:     0x622d505b053a - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]    2:     0x622d505b053a - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]    3:     0x622d505b053a - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stderr]    4:     0x622d505c437a - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]    5:     0x622d505c437a - core[10b6fa85044e1869]::fmt::write
[INFO] [stderr]    6:     0x622d505b5912 - std[b80a194dd3c418bb]::io::default_write_fmt::<std[b80a194dd3c418bb]::sys::stdio::unix::Stderr>
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stderr]    7:     0x622d505b5912 - <std[b80a194dd3c418bb]::sys::stdio::unix::Stderr as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stderr]    8:     0x622d5058f74f - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr]    9:     0x622d5058f74f - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stderr]   10:     0x622d505a8a71 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:319:9
[INFO] [stderr]   11:     0x622d50544d3c - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stderr]   12:     0x622d50544d3c - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stderr]   13:     0x622d505a8c62 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stderr]   14:     0x622d505a8c62 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stderr]   15:     0x622d5058f83a - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:691:13
[INFO] [stderr]   16:     0x622d505871a9 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr]   17:     0x622d5059051d - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stderr]   18:     0x622d505c4a4d - core[10b6fa85044e1869]::panicking::panic_nounwind_fmt::runtime
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:122:22
[INFO] [stderr]   19:     0x622d505c4a4d - core[10b6fa85044e1869]::panicking::panic_nounwind_fmt
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/intrinsics/mod.rs:2447:9
[INFO] [stderr]   20:     0x622d505c4b97 - core[10b6fa85044e1869]::panicking::panic_null_pointer_dereference
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:302:5
[INFO] [stderr]   21:     0x622d505225dd - chess_engine::movegen::get_rook_attacks::h293d41eff7439909
[INFO] [stderr]                                at /opt/rustwide/workdir/src/movegen.rs:109:9
[INFO] [stderr]   22:     0x622d505225dd - chess_engine::movegen::is_square_attacked::h530802f13c080dae
[INFO] [stderr]                                at /opt/rustwide/workdir/src/movegen.rs:151:13
[INFO] [stderr]   23:     0x622d505225dd - chess_engine::movegen::generate_king_moves::hc361e63bb343e9a1
[INFO] [stderr]                                at /opt/rustwide/workdir/src/movegen.rs:378:6
[INFO] [stderr]   24:     0x622d50526e2b - chess_engine::movegen::generate_pseudo_legal_moves::h0bde563cea0a0a50
[INFO] [stderr]                                at /opt/rustwide/workdir/src/movegen.rs:164:5
[INFO] [stderr]   25:     0x622d5051cf83 - chess_engine::board::Board::generate_pseudo_legal_moves::h3c1932bedc31a46e
[INFO] [stderr]                                at /opt/rustwide/workdir/src/board.rs:690:9
[INFO] [stderr]   26:     0x622d5051cfd8 - chess_engine::board::Board::perft::h8b1c88aa3e508345
[INFO] [stderr]                                at /opt/rustwide/workdir/src/board.rs:704:14
[INFO] [stderr]   27:     0x622d5052d716 - chess_engine::board::tests::perft_startpos::h10060c7f628b0ad7
[INFO] [stderr]                                at /opt/rustwide/workdir/src/board.rs:923:26
[INFO] [stderr]   28:     0x622d5052d877 - chess_engine::board::tests::perft_startpos::{{closure}}::h70c5190a5df616d7
[INFO] [stderr]                                at /opt/rustwide/workdir/src/board.rs:919:24
[INFO] [stderr]   29:     0x622d505330a6 - core::ops::function::FnOnce::call_once::h5be91898da5235ec
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stderr]   30:     0x622d50538e1b - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stderr]   31:     0x622d50538e1b - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stderr]   32:     0x622d5054580b - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stderr]   33:     0x622d5054580b - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stderr]   34:     0x622d5054580b - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stderr]   35:     0x622d5054580b - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stderr]   36:     0x622d5054580b - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stderr]   37:     0x622d5054580b - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stderr]   38:     0x622d5054580b - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stderr]   39:     0x622d50540f24 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stderr]   40:     0x622d50540f24 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stderr]   41:     0x622d50548412 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stderr]   42:     0x622d50548412 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stderr]   43:     0x622d50548412 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stderr]   44:     0x622d50548412 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stderr]   45:     0x622d50548412 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stderr]   46:     0x622d50548412 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stderr]   47:     0x622d50548412 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stderr]   48:     0x622d505afe4f - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stderr]   49:     0x622d505afe4f - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stderr]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stderr]   50:     0x77426d8a6aa4 - <unknown>
[INFO] [stderr]   51:     0x77426d933a64 - clone
[INFO] [stderr]   52:                0x0 - <unknown>
[INFO] [stderr] thread caused non-unwinding panic. aborting.
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/deps/chess_engine-d089768b02a3b1e7` (signal: 6, SIGABRT: process abort signal)
[INFO] running `Command { std: "docker" "inspect" "d3614c90b6c90c5d090f0bc380312f9067cce1d902a48fdcc65514829b86631f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3614c90b6c90c5d090f0bc380312f9067cce1d902a48fdcc65514829b86631f", kill_on_drop: false }`
[INFO] [stdout] d3614c90b6c90c5d090f0bc380312f9067cce1d902a48fdcc65514829b86631f
