[INFO] updating cached repository hakos/rustchess
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/hakos/rustchess
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/hakos/rustchess" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/hakos/rustchess"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/hakos/rustchess'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/hakos/rustchess" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/hakos/rustchess"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/hakos/rustchess'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] fd585f51df28bb67af99916b6f6cbb7444207b11
[INFO] sha for GitHub repo hakos/rustchess: fd585f51df28bb67af99916b6f6cbb7444207b11
[INFO] validating manifest of hakos/rustchess on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of hakos/rustchess on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing hakos/rustchess
[INFO] finished frobbing hakos/rustchess
[INFO] frobbed toml for hakos/rustchess written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/hakos/rustchess/Cargo.toml
[INFO] started frobbing hakos/rustchess
[INFO] finished frobbing hakos/rustchess
[INFO] frobbed toml for hakos/rustchess written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/hakos/rustchess/Cargo.toml
[INFO] crate hakos/rustchess already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking hakos/rustchess against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-4/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/hakos/rustchess:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 421378ad26d90f2d1c6e40d2686fb5e7909d35ce60d8de1dd0daccff13cfa96f
[INFO] running `"docker" "start" "-a" "421378ad26d90f2d1c6e40d2686fb5e7909d35ce60d8de1dd0daccff13cfa96f"`
[INFO] [stderr]     Checking rustchess v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `score`
[INFO] [stderr]   --> src/main.rs:42:22
[INFO] [stderr]    |
[INFO] [stderr] 42 |                 let (score, moves, depth) =
[INFO] [stderr]    |                      ^^^^^ help: consider prefixing with an underscore: `_score`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `depth`
[INFO] [stderr]   --> src/main.rs:42:36
[INFO] [stderr]    |
[INFO] [stderr] 42 |                 let (score, moves, depth) =
[INFO] [stderr]    |                                    ^^^^^ help: consider prefixing with an underscore: `_depth`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `debug`
[INFO] [stderr]    --> src/search.rs:150:5
[INFO] [stderr]     |
[INFO] [stderr] 150 |     debug: bool,
[INFO] [stderr]     |     ^^^^^ help: consider prefixing with an underscore: `_debug`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `cleared`
[INFO] [stderr]    --> src/board.rs:193:5
[INFO] [stderr]     |
[INFO] [stderr] 193 |     fn cleared() -> Pieces {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `count_moves`
[INFO] [stderr]    --> src/board.rs:480:5
[INFO] [stderr]     |
[INFO] [stderr] 480 |     fn count_moves(&self, moves: &[BitBoard; 64], color: Color) -> u32 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `cleared`
[INFO] [stderr]    --> src/board.rs:979:5
[INFO] [stderr]     |
[INFO] [stderr] 979 |     fn cleared() -> Board {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_fen`
[INFO] [stderr]    --> src/board.rs:993:5
[INFO] [stderr]     |
[INFO] [stderr] 993 |     pub fn from_fen(fen: &str) -> Board {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `as_fen`
[INFO] [stderr]     --> src/board.rs:1066:5
[INFO] [stderr]      |
[INFO] [stderr] 1066 |     pub fn as_fen(&self) -> String {
[INFO] [stderr]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `as_unicode`
[INFO] [stderr]     --> src/board.rs:1105:5
[INFO] [stderr]      |
[INFO] [stderr] 1105 |     fn as_unicode(&self) -> [char; 64] {
[INFO] [stderr]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print`
[INFO] [stderr]     --> src/board.rs:1125:5
[INFO] [stderr]      |
[INFO] [stderr] 1125 |     pub fn print(&self) {
[INFO] [stderr]      |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_moves`
[INFO] [stderr]     --> src/board.rs:1228:5
[INFO] [stderr]      |
[INFO] [stderr] 1228 |     fn get_moves(&self) -> [BitBoard; 64] {
[INFO] [stderr]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `count_moves`
[INFO] [stderr]     --> src/board.rs:1238:5
[INFO] [stderr]      |
[INFO] [stderr] 1238 |     pub fn count_moves(&self) -> u32 {
[INFO] [stderr]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_check_mated`
[INFO] [stderr]     --> src/board.rs:1254:5
[INFO] [stderr]      |
[INFO] [stderr] 1254 |     pub fn is_check_mated(&self) -> bool {
[INFO] [stderr]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_stale_mate`
[INFO] [stderr]     --> src/board.rs:1258:5
[INFO] [stderr]      |
[INFO] [stderr] 1258 |     pub fn is_stale_mate(&self) -> bool {
[INFO] [stderr]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `score`
[INFO] [stderr]   --> src/main.rs:42:22
[INFO] [stderr]    |
[INFO] [stderr] 42 |                 let (score, moves, depth) =
[INFO] [stderr]    |                      ^^^^^ help: consider prefixing with an underscore: `_score`
[INFO] [stderr] warning: function is never used: `unicode_to_fen`
[INFO] [stderr]     --> src/board.rs:1359:1
[INFO] [stderr]      |
[INFO] [stderr] 1359 | fn unicode_to_fen(c: char) -> char {
[INFO] [stderr]      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `depth`
[INFO] [stderr]   --> src/main.rs:42:36
[INFO] [stderr]    |
[INFO] [stderr] 42 |                 let (score, moves, depth) =
[INFO] [stderr]    |                                    ^^^^^ help: consider prefixing with an underscore: `_depth`
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `merge_spaces`
[INFO] [stderr]     --> src/board.rs:1378:1
[INFO] [stderr]      |
[INFO] [stderr] 1378 | fn merge_spaces(chars: impl Iterator<Item = char>) -> String {
[INFO] [stderr]      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `debug`
[INFO] [stderr]    --> src/search.rs:150:5
[INFO] [stderr]     |
[INFO] [stderr] 150 |     debug: bool,
[INFO] [stderr]     |     ^^^^^ help: consider prefixing with an underscore: `_debug`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `score`
[INFO] [stderr]    --> src/search.rs:353:14
[INFO] [stderr]     |
[INFO] [stderr] 353 |         let (score, moves) = negamax(&board, 1, true, &[None]);
[INFO] [stderr]     |              ^^^^^ help: consider prefixing with an underscore: `_score`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.76s
[INFO] running `"docker" "inspect" "421378ad26d90f2d1c6e40d2686fb5e7909d35ce60d8de1dd0daccff13cfa96f"`
[INFO] running `"docker" "rm" "-f" "421378ad26d90f2d1c6e40d2686fb5e7909d35ce60d8de1dd0daccff13cfa96f"`
[INFO] [stdout] 421378ad26d90f2d1c6e40d2686fb5e7909d35ce60d8de1dd0daccff13cfa96f