[INFO] cloning repository https://github.com/michaelb/shogai
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/michaelb/shogai" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichaelb%2Fshogai"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichaelb%2Fshogai'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ab57da63db18538d88cf487acb37ba2ca119a0a2
[INFO] checking michaelb/shogai against try#e2aab98dd8975a0990f9fbb79b3ea4b40559a184 for pr-72493
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichaelb%2Fshogai" "/workspace/builds/worker-8/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/michaelb/shogai on toolchain e2aab98dd8975a0990f9fbb79b3ea4b40559a184
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e2aab98dd8975a0990f9fbb79b3ea4b40559a184" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/michaelb/shogai
[INFO] finished tweaking git repo https://github.com/michaelb/shogai
[INFO] tweaked toml for git repo https://github.com/michaelb/shogai written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/michaelb/shogai already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e2aab98dd8975a0990f9fbb79b3ea4b40559a184" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e2aab98dd8975a0990f9fbb79b3ea4b40559a184" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 096ba10ca15f5594e920a597aba52eb26008c762f2c926bed74af56e63e6e988
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "096ba10ca15f5594e920a597aba52eb26008c762f2c926bed74af56e63e6e988"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking shogai v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `crate::movement::*`
[INFO] [stderr]    --> src/board.rs:266:9
[INFO] [stderr]     |
[INFO] [stderr] 266 |     use crate::movement::*;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::piece::*`
[INFO] [stderr]    --> src/board.rs:267:9
[INFO] [stderr]     |
[INFO] [stderr] 267 |     use crate::piece::*;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::position::*`
[INFO] [stderr]    --> src/board.rs:268:9
[INFO] [stderr]     |
[INFO] [stderr] 268 |     use crate::position::*;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/invalidmoveerror.rs:165:38
[INFO] [stderr]     |
[INFO] [stderr] 165 | pub fn check_possible_move(mv: &str, b: Board) -> Result<&str, InvalidMoveError> {
[INFO] [stderr]     |                                      ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/invalidmoveerror.rs:186:49
[INFO] [stderr]     |
[INFO] [stderr] 186 | pub fn check_move_possible_after_drop(mv: &str, b: Board) -> Result<&str, InvalidMoveError> {
[INFO] [stderr]     |                                                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/invalidmoveerror.rs:192:43
[INFO] [stderr]     |
[INFO] [stderr] 192 | pub fn check_mandatry_promotion(mv: &str, b: Board) -> Result<&str, InvalidMoveError> {
[INFO] [stderr]     |                                           ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/invalidmoveerror.rs:210:47
[INFO] [stderr]     |
[INFO] [stderr] 210 | pub fn check_checkmate_by_pawn_drop(mv: &str, b: Board) -> Result<&str, InvalidMoveError> {
[INFO] [stderr]     |                                               ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/invalidmoveerror.rs:165:38
[INFO] [stderr]     |
[INFO] [stderr] 165 | pub fn check_possible_move(mv: &str, b: Board) -> Result<&str, InvalidMoveError> {
[INFO] [stderr]     |                                      ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/invalidmoveerror.rs:186:49
[INFO] [stderr]     |
[INFO] [stderr] 186 | pub fn check_move_possible_after_drop(mv: &str, b: Board) -> Result<&str, InvalidMoveError> {
[INFO] [stderr]     |                                                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/invalidmoveerror.rs:192:43
[INFO] [stderr]     |
[INFO] [stderr] 192 | pub fn check_mandatry_promotion(mv: &str, b: Board) -> Result<&str, InvalidMoveError> {
[INFO] [stderr]     |                                           ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/invalidmoveerror.rs:210:47
[INFO] [stderr]     |
[INFO] [stderr] 210 | pub fn check_checkmate_by_pawn_drop(mv: &str, b: Board) -> Result<&str, InvalidMoveError> {
[INFO] [stderr]     |                                               ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `export`
[INFO] [stderr]    --> src/board.rs:147:12
[INFO] [stderr]     |
[INFO] [stderr] 147 |     pub fn export(&self) -> Vec<Piece> {
[INFO] [stderr]     |            ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `flip`
[INFO] [stderr]    --> src/board.rs:153:8
[INFO] [stderr]     |
[INFO] [stderr] 153 |     fn flip(&mut self) {
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `set`
[INFO] [stderr]    --> src/board.rs:172:8
[INFO] [stderr]     |
[INFO] [stderr] 172 |     fn set(&mut self, col: Color) {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]    --> src/board.rs:253:12
[INFO] [stderr]     |
[INFO] [stderr] 253 |     pub fn new<'a>() -> Board {
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `PieceHasNoSuchMoveError`
[INFO] [stderr]   --> src/invalidmoveerror.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     PieceHasNoSuchMoveError,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `NoMovePossibleAfterDropError`
[INFO] [stderr]   --> src/invalidmoveerror.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     NoMovePossibleAfterDropError,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `MandatoryPromotionError`
[INFO] [stderr]   --> src/invalidmoveerror.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     MandatoryPromotionError,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `UncoverCheckError`
[INFO] [stderr]   --> src/invalidmoveerror.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     UncoverCheckError,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `CheckmateByPawnDropError`
[INFO] [stderr]   --> src/invalidmoveerror.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     CheckmateByPawnDropError,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `move_to`
[INFO] [stderr]   --> src/piece.rs:41:8
[INFO] [stderr]    |
[INFO] [stderr] 41 |     fn move_to(&mut self, dest_square: Position) {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `remove`
[INFO] [stderr]   --> src/piece.rs:45:8
[INFO] [stderr]    |
[INFO] [stderr] 45 |     fn remove(&mut self) {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `export`
[INFO] [stderr]    --> src/board.rs:147:12
[INFO] [stderr]     |
[INFO] [stderr] 147 |     pub fn export(&self) -> Vec<Piece> {
[INFO] [stderr]     |            ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `flip`
[INFO] [stderr]    --> src/board.rs:153:8
[INFO] [stderr]     |
[INFO] [stderr] 153 |     fn flip(&mut self) {
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `set`
[INFO] [stderr]    --> src/board.rs:172:8
[INFO] [stderr]     |
[INFO] [stderr] 172 |     fn set(&mut self, col: Color) {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]    --> src/board.rs:253:12
[INFO] [stderr]     |
[INFO] [stderr] 253 |     pub fn new<'a>() -> Board {
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `PieceHasNoSuchMoveError`
[INFO] [stderr]   --> src/invalidmoveerror.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     PieceHasNoSuchMoveError,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `NoMovePossibleAfterDropError`
[INFO] [stderr]   --> src/invalidmoveerror.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     NoMovePossibleAfterDropError,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `MandatoryPromotionError`
[INFO] [stderr]   --> src/invalidmoveerror.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     MandatoryPromotionError,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `UncoverCheckError`
[INFO] [stderr]   --> src/invalidmoveerror.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     UncoverCheckError,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `CheckmateByPawnDropError`
[INFO] [stderr]   --> src/invalidmoveerror.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     CheckmateByPawnDropError,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 15 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 16 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `"docker" "inspect" "096ba10ca15f5594e920a597aba52eb26008c762f2c926bed74af56e63e6e988"`
[INFO] running `"docker" "rm" "-f" "096ba10ca15f5594e920a597aba52eb26008c762f2c926bed74af56e63e6e988"`
[INFO] [stdout] 096ba10ca15f5594e920a597aba52eb26008c762f2c926bed74af56e63e6e988