[INFO] cloning repository https://github.com/hakos/rustchess
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hakos/rustchess" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhakos%2Frustchess", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhakos%2Frustchess'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fd585f51df28bb67af99916b6f6cbb7444207b11
[INFO] checking hakos/rustchess against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhakos%2Frustchess" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hakos/rustchess on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hakos/rustchess
[INFO] finished tweaking git repo https://github.com/hakos/rustchess
[INFO] tweaked toml for git repo https://github.com/hakos/rustchess written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/hakos/rustchess already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a86f0b87d00a90e02c497f2eecb1a5777d3a2afaa8718fe1efb784d3b46f8bae
[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" "a86f0b87d00a90e02c497f2eecb1a5777d3a2afaa8718fe1efb784d3b46f8bae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a86f0b87d00a90e02c497f2eecb1a5777d3a2afaa8718fe1efb784d3b46f8bae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a86f0b87d00a90e02c497f2eecb1a5777d3a2afaa8718fe1efb784d3b46f8bae", kill_on_drop: false }`
[INFO] [stdout] a86f0b87d00a90e02c497f2eecb1a5777d3a2afaa8718fe1efb784d3b46f8bae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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] e62d35bb0385c9334a6f6bab40eea7a1a20a924862201fdfcd392f441ee165ea
[INFO] running `Command { std: "docker" "start" "-a" "e62d35bb0385c9334a6f6bab40eea7a1a20a924862201fdfcd392f441ee165ea", kill_on_drop: false }`
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking rustchess v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `score`
[INFO] [stdout]   --> src/main.rs:42:22
[INFO] [stdout]    |
[INFO] [stdout] 42 |                 let (score, moves, depth) =
[INFO] [stdout]    |                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_score`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `depth`
[INFO] [stdout]   --> src/main.rs:42:36
[INFO] [stdout]    |
[INFO] [stdout] 42 |                 let (score, moves, depth) =
[INFO] [stdout]    |                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_depth`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `debug`
[INFO] [stdout]    --> src/search.rs:150:5
[INFO] [stdout]     |
[INFO] [stdout] 150 |     debug: bool,
[INFO] [stdout]     |     ^^^^^ help: if this is intentional, prefix it with an underscore: `_debug`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cleared`
[INFO] [stdout]    --> src/board.rs:193:8
[INFO] [stdout]     |
[INFO] [stdout] 193 |     fn cleared() -> Pieces {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `count_moves`
[INFO] [stdout]    --> src/board.rs:480:8
[INFO] [stdout]     |
[INFO] [stdout] 480 |     fn count_moves(&self, moves: &[BitBoard; 64], color: Color) -> u32 {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cleared`
[INFO] [stdout]    --> src/board.rs:979:8
[INFO] [stdout]     |
[INFO] [stdout] 979 |     fn cleared() -> Board {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_fen`
[INFO] [stdout]    --> src/board.rs:993:12
[INFO] [stdout]     |
[INFO] [stdout] 993 |     pub fn from_fen(fen: &str) -> Board {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_fen`
[INFO] [stdout]     --> src/board.rs:1066:12
[INFO] [stdout]      |
[INFO] [stdout] 1066 |     pub fn as_fen(&self) -> String {
[INFO] [stdout]      |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_unicode`
[INFO] [stdout]     --> src/board.rs:1105:8
[INFO] [stdout]      |
[INFO] [stdout] 1105 |     fn as_unicode(&self) -> [char; 64] {
[INFO] [stdout]      |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `print`
[INFO] [stdout]     --> src/board.rs:1125:12
[INFO] [stdout]      |
[INFO] [stdout] 1125 |     pub fn print(&self) {
[INFO] [stdout]      |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_moves`
[INFO] [stdout]     --> src/board.rs:1228:8
[INFO] [stdout]      |
[INFO] [stdout] 1228 |     fn get_moves(&self) -> [BitBoard; 64] {
[INFO] [stdout]      |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `count_moves`
[INFO] [stdout]     --> src/board.rs:1238:12
[INFO] [stdout]      |
[INFO] [stdout] 1238 |     pub fn count_moves(&self) -> u32 {
[INFO] [stdout]      |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_check_mated`
[INFO] [stdout]     --> src/board.rs:1254:12
[INFO] [stdout]      |
[INFO] [stdout] 1254 |     pub fn is_check_mated(&self) -> bool {
[INFO] [stdout]      |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_stale_mate`
[INFO] [stdout]     --> src/board.rs:1258:12
[INFO] [stdout]      |
[INFO] [stdout] 1258 |     pub fn is_stale_mate(&self) -> bool {
[INFO] [stdout]      |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `unicode_to_fen`
[INFO] [stdout]     --> src/board.rs:1359:4
[INFO] [stdout]      |
[INFO] [stdout] 1359 | fn unicode_to_fen(c: char) -> char {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `merge_spaces`
[INFO] [stdout]     --> src/board.rs:1378:4
[INFO] [stdout]      |
[INFO] [stdout] 1378 | fn merge_spaces(chars: impl Iterator<Item = char>) -> String {
[INFO] [stdout]      |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `score`
[INFO] [stdout]   --> src/main.rs:42:22
[INFO] [stdout]    |
[INFO] [stdout] 42 |                 let (score, moves, depth) =
[INFO] [stdout]    |                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_score`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `depth`
[INFO] [stdout]   --> src/main.rs:42:36
[INFO] [stdout]    |
[INFO] [stdout] 42 |                 let (score, moves, depth) =
[INFO] [stdout]    |                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_depth`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `debug`
[INFO] [stdout]    --> src/search.rs:150:5
[INFO] [stdout]     |
[INFO] [stdout] 150 |     debug: bool,
[INFO] [stdout]     |     ^^^^^ help: if this is intentional, prefix it with an underscore: `_debug`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `score`
[INFO] [stdout]    --> src/search.rs:353:14
[INFO] [stdout]     |
[INFO] [stdout] 353 |         let (score, moves) = negamax(&board, 1, true, &[None]);
[INFO] [stdout]     |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.94s
[INFO] running `Command { std: "docker" "inspect" "e62d35bb0385c9334a6f6bab40eea7a1a20a924862201fdfcd392f441ee165ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e62d35bb0385c9334a6f6bab40eea7a1a20a924862201fdfcd392f441ee165ea", kill_on_drop: false }`
[INFO] [stdout] e62d35bb0385c9334a6f6bab40eea7a1a20a924862201fdfcd392f441ee165ea