[INFO] fetching crate backgammon_engine 0.1.0...
[INFO] testing backgammon_engine-0.1.0 against beta-2026-04-21 for beta-1.96-1
[INFO] extracting crate backgammon_engine 0.1.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate backgammon_engine 0.1.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate backgammon_engine 0.1.0
[INFO] tweaked toml for crates.io crate backgammon_engine 0.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate backgammon_engine 0.1.0 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate backgammon_engine 0.1.0 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-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4f903bc92671bb5b6691422e8f4654ed8047117b13c1103e1914510c0ac75190
[INFO] running `Command { std: "docker" "start" "-a" "4f903bc92671bb5b6691422e8f4654ed8047117b13c1103e1914510c0ac75190", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f903bc92671bb5b6691422e8f4654ed8047117b13c1103e1914510c0ac75190", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f903bc92671bb5b6691422e8f4654ed8047117b13c1103e1914510c0ac75190", kill_on_drop: false }`
[INFO] [stdout] 4f903bc92671bb5b6691422e8f4654ed8047117b13c1103e1914510c0ac75190
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a0c9e18e9f81b7d9bf5636c81e6192a8483280c413fc721175a7b7890067253
[INFO] running `Command { std: "docker" "start" "-a" "9a0c9e18e9f81b7d9bf5636c81e6192a8483280c413fc721175a7b7890067253", kill_on_drop: false }`
[INFO] [stderr]    Compiling backgammon_engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/backgammonstate.rs:765:8
[INFO] [stdout]     |
[INFO] [stdout] 764 | impl BackgammonState {
[INFO] [stdout]     | -------------------- associated function in this implementation
[INFO] [stdout] 765 |     fn new(
[INFO] [stdout]     |        ^^^
[INFO] [stdout]     |
[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 0.42s
[INFO] running `Command { std: "docker" "inspect" "9a0c9e18e9f81b7d9bf5636c81e6192a8483280c413fc721175a7b7890067253", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a0c9e18e9f81b7d9bf5636c81e6192a8483280c413fc721175a7b7890067253", kill_on_drop: false }`
[INFO] [stdout] 9a0c9e18e9f81b7d9bf5636c81e6192a8483280c413fc721175a7b7890067253
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d35ca47f4e4773d31376579588ac56cf7b4a1f52f17648c7d2faae8ebe197da7
[INFO] running `Command { std: "docker" "start" "-a" "d35ca47f4e4773d31376579588ac56cf7b4a1f52f17648c7d2faae8ebe197da7", kill_on_drop: false }`
[INFO] [stderr]    Compiling backgammon_engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/backgammonstate.rs:765:8
[INFO] [stdout]     |
[INFO] [stdout] 764 | impl BackgammonState {
[INFO] [stdout]     | -------------------- associated function in this implementation
[INFO] [stdout] 765 |     fn new(
[INFO] [stdout]     |        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `STARTING_GAME_STATE`
[INFO] [stdout]  --> tests/integration_tests.rs:1:43
[INFO] [stdout]   |
[INFO] [stdout] 1 | use backgammon_engine::backgammonstate::{ STARTING_GAME_STATE, BackgammonState, gen_poss_next_states};
[INFO] [stdout]   |                                           ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dice`
[INFO] [stdout]    --> src/backgammonstate.rs:109:13
[INFO] [stdout]     |
[INFO] [stdout] 109 |         let dice = vec![1];
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_dice`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dice`
[INFO] [stdout]    --> src/backgammonstate.rs:131:13
[INFO] [stdout]     |
[INFO] [stdout] 131 |         let dice = vec![1];
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_dice`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dice`
[INFO] [stdout]    --> src/backgammonstate.rs:534:13
[INFO] [stdout]     |
[INFO] [stdout] 534 |         let dice = vec![1];
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_dice`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dice`
[INFO] [stdout]    --> src/backgammonstate.rs:556:13
[INFO] [stdout]     |
[INFO] [stdout] 556 |         let dice = vec![1];
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_dice`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/backgammonstate.rs:639:13
[INFO] [stdout]     |
[INFO] [stdout] 639 |         let mut game_state = BackgammonState {
[INFO] [stdout]     |             ----^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/backgammonstate.rs:765:8
[INFO] [stdout]     |
[INFO] [stdout] 764 | impl BackgammonState {
[INFO] [stdout]     | -------------------- associated function in this implementation
[INFO] [stdout] 765 |     fn new(
[INFO] [stdout]     |        ^^^
[INFO] [stdout]     |
[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 0.81s
[INFO] running `Command { std: "docker" "inspect" "d35ca47f4e4773d31376579588ac56cf7b4a1f52f17648c7d2faae8ebe197da7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d35ca47f4e4773d31376579588ac56cf7b4a1f52f17648c7d2faae8ebe197da7", kill_on_drop: false }`
[INFO] [stdout] d35ca47f4e4773d31376579588ac56cf7b4a1f52f17648c7d2faae8ebe197da7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 47e88dd28410ec3a65b2c5d9f64b811212d82278659859f5d64e0d1cd2ea774b
[INFO] running `Command { std: "docker" "start" "-a" "47e88dd28410ec3a65b2c5d9f64b811212d82278659859f5d64e0d1cd2ea774b", kill_on_drop: false }`
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]    --> src/backgammonstate.rs:765:8
[INFO] [stderr]     |
[INFO] [stderr] 764 | impl BackgammonState {
[INFO] [stderr]     | -------------------- associated function in this implementation
[INFO] [stderr] 765 |     fn new(
[INFO] [stderr]     |        ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `backgammon_engine` (lib) generated 1 warning
[INFO] [stderr] warning: unused import: `STARTING_GAME_STATE`
[INFO] [stderr]  --> tests/integration_tests.rs:1:43
[INFO] [stderr]   |
[INFO] [stderr] 1 | use backgammon_engine::backgammonstate::{ STARTING_GAME_STATE, BackgammonState, gen_poss_next_states};
[INFO] [stderr]   |                                           ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `backgammon_engine` (test "integration_tests") generated 1 warning (run `cargo fix --test "integration_tests" -p backgammon_engine` to apply 1 suggestion)
[INFO] [stderr] warning: unused variable: `dice`
[INFO] [stderr]    --> src/backgammonstate.rs:109:13
[INFO] [stderr]     |
[INFO] [stderr] 109 |         let dice = vec![1];
[INFO] [stderr]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_dice`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dice`
[INFO] [stderr]    --> src/backgammonstate.rs:131:13
[INFO] [stderr]     |
[INFO] [stderr] 131 |         let dice = vec![1];
[INFO] [stderr]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_dice`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dice`
[INFO] [stderr]    --> src/backgammonstate.rs:534:13
[INFO] [stderr]     |
[INFO] [stderr] 534 |         let dice = vec![1];
[INFO] [stderr]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_dice`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dice`
[INFO] [stderr]    --> src/backgammonstate.rs:556:13
[INFO] [stderr]     |
[INFO] [stderr] 556 |         let dice = vec![1];
[INFO] [stderr]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_dice`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/backgammonstate.rs:639:13
[INFO] [stderr]     |
[INFO] [stderr] 639 |         let mut game_state = BackgammonState {
[INFO] [stderr]     |             ----^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `backgammon_engine` (lib test) generated 6 warnings (1 duplicate) (run `cargo fix --lib -p backgammon_engine --tests` to apply 5 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/backgammon_engine-fe5d34c7abf7edb0)
[INFO] [stdout] 
[INFO] [stdout] running 37 tests
[INFO] [stdout] test backgammonstate::test_black::test_apply_move_bearing_black_2 ... ok
[INFO] [stdout] test backgammonstate::test_black::test_apply_move_bearing_black_1 ... ok
[INFO] [stdout] test backgammonstate::test_black::test_apply_move_black_1 ... ok
[INFO] [stdout] test backgammonstate::test_black::test_generate_black_moves_2 ... ok
[INFO] [stdout] test backgammonstate::test_black::test_is_black_bearing_2 ... ok
[INFO] [stdout] test backgammonstate::test_black::test_valid_moves_2 ... ok
[INFO] [stdout] test backgammonstate::test_black::test_valid_moves_4 ... ok
[INFO] [stdout] test backgammonstate::test_black::test_valid_moves_5 ... ok
[INFO] [stdout] test backgammonstate::test_black::test_valid_moves_6 ... ok
[INFO] [stdout] test backgammonstate::test_black::test_generate_black_moves_1 ... ok
[INFO] [stdout] test backgammonstate::test_black::test_valid_moves_3 ... ok
[INFO] [stdout] test backgammonstate::test_black::test_valid_moves_7 ... ok
[INFO] [stdout] test backgammonstate::test_black::test_valid_moves_1 ... ok
[INFO] [stdout] test backgammonstate::test_black::test_valid_moves_bearing_2 ... ok
[INFO] [stdout] test backgammonstate::test_white::is_white_bearing_test2 ... ok
[INFO] [stdout] test backgammonstate::test_white::test_bearing_white ... ok
[INFO] [stdout] test backgammonstate::test_white::test_generate_white_moves_2 ... ok
[INFO] [stdout] test backgammonstate::test_white::test_get_unused_items_1 ... ok
[INFO] [stdout] test backgammonstate::test_white::test_get_unused_items_2 ... ok
[INFO] [stdout] test backgammonstate::test_white::test_to_string_method ... ok
[INFO] [stdout] test backgammonstate::test_white::test_valid_dice_1 ... ok
[INFO] [stdout] test backgammonstate::test_white::test_valid_dice_2 ... ok
[INFO] [stdout] test backgammonstate::test_white::test_valid_moves_3 ... ok
[INFO] [stdout] test backgammonstate::test_black::test_valid_moves_bearing_1 ... ok
[INFO] [stdout] test backgammonstate::test_white::test_valid_moves_4 ... ok
[INFO] [stdout] test backgammonstate::test_white::test_valid_moves_1 ... ok
[INFO] [stdout] test backgammonstate::test_white::test_valid_dice_3 ... ok
[INFO] [stdout] test backgammonstate::test_white::test_valid_moves_2 ... ok
[INFO] [stdout] test backgammonstate::test_white::test_valid_moves_5 ... ok
[INFO] [stdout] test backgammonstate::test_white::test_valid_moves_8 ... ok
[INFO] [stdout] test backgammonstate::test_black::test_is_black_bearing_1 ... ok
[INFO] [stdout] test backgammonstate::test_white::test_valid_moves_6 ... ok
[INFO] [stdout] test backgammonstate::test_white::test_valid_moves_bearing_2 ... ok
[INFO] [stdout] test backgammonstate::test_white::test_generate_white_moves_1 ... ok
[INFO] [stdout] test backgammonstate::test_white::test_valid_moves_bearing_1 ... ok
[INFO] [stdout] test backgammonstate::test_white::test_valid_moves_7 ... ok
[INFO] [stdout] test backgammonstate::test_white::test_valid_dice_4 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 37 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/integration_tests.rs (/opt/rustwide/target/debug/deps/integration_tests-e166dac5d8b2f9a0)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test test_invalid_dice_input ... ok
[INFO] [stdout] test test_invalid_dice_input_2 ... ok
[INFO] [stderr]    Doc-tests backgammon_engine
[INFO] [stdout] test test_invalid_state_input ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/backgammonstate.rs - backgammonstate::gen_poss_next_states (line 987) ... ok
[INFO] [stdout] test src/backgammonstate.rs - backgammonstate::gen_poss_next_states (line 957) has been running for over 60 seconds
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "47e88dd28410ec3a65b2c5d9f64b811212d82278659859f5d64e0d1cd2ea774b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47e88dd28410ec3a65b2c5d9f64b811212d82278659859f5d64e0d1cd2ea774b", kill_on_drop: false }`
[INFO] [stdout] 47e88dd28410ec3a65b2c5d9f64b811212d82278659859f5d64e0d1cd2ea774b