[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] 68213e8bb5739b2080426f6bb0d2b2b5d574efd9
[INFO] checking michaelb/shogai against master#783139bd8fc3b94fac9a1bf81bba2c506e8221b6 for pr-72644
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichaelb%2Fshogai" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/michaelb/shogai on toolchain 783139bd8fc3b94fac9a1bf81bba2c506e8221b6
[INFO] running `"/workspace/cargo-home/bin/cargo" "+783139bd8fc3b94fac9a1bf81bba2c506e8221b6" "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-2/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" "+783139bd8fc3b94fac9a1bf81bba2c506e8221b6" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+783139bd8fc3b94fac9a1bf81bba2c506e8221b6" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8893eda66dc6a2d79b54a18bdd20ad508d165edc73fd22e01b72ef85809456d6
[INFO] running `"docker" "start" "-a" "8893eda66dc6a2d79b54a18bdd20ad508d165edc73fd22e01b72ef85809456d6"`
[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:304:9
[INFO] [stderr]     |
[INFO] [stderr] 304 |     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:305:9
[INFO] [stderr]     |
[INFO] [stderr] 305 |     use crate::piece::*;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::position::*`
[INFO] [stderr]    --> src/board.rs:306:9
[INFO] [stderr]     |
[INFO] [stderr] 306 |     use crate::position::*;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/invalidmoveerror.rs:359:47
[INFO] [stderr]     |
[INFO] [stderr] 359 | 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]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/invalidmoveerror.rs:359:47
[INFO] [stderr]     |
[INFO] [stderr] 359 | 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]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `export`
[INFO] [stderr]    --> src/board.rs:150:12
[INFO] [stderr]     |
[INFO] [stderr] 150 |     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: `iter_moves`
[INFO] [stderr]    --> src/board.rs:270:12
[INFO] [stderr]     |
[INFO] [stderr] 270 |     pub fn iter_moves(&self) -> impl Iterator<Item = String> {
[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: `from_relative`
[INFO] [stderr]   --> src/movement.rs:33:12
[INFO] [stderr]    |
[INFO] [stderr] 33 |     pub fn from_relative(piece: Piece, relative: i32) -> impl Iterator<Item = String> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `move_to`
[INFO] [stderr]   --> src/piece.rs:42:8
[INFO] [stderr]    |
[INFO] [stderr] 42 |     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:47:8
[INFO] [stderr]    |
[INFO] [stderr] 47 |     fn remove(&mut self) {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `export`
[INFO] [stderr]    --> src/board.rs:150:12
[INFO] [stderr]     |
[INFO] [stderr] 150 |     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: `iter_moves`
[INFO] [stderr]    --> src/board.rs:270:12
[INFO] [stderr]     |
[INFO] [stderr] 270 |     pub fn iter_moves(&self) -> impl Iterator<Item = String> {
[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: `from_relative`
[INFO] [stderr]   --> src/movement.rs:33:12
[INFO] [stderr]    |
[INFO] [stderr] 33 |     pub fn from_relative(piece: Piece, relative: i32) -> impl Iterator<Item = String> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `"docker" "inspect" "8893eda66dc6a2d79b54a18bdd20ad508d165edc73fd22e01b72ef85809456d6"`
[INFO] running `"docker" "rm" "-f" "8893eda66dc6a2d79b54a18bdd20ad508d165edc73fd22e01b72ef85809456d6"`
[INFO] [stdout] 8893eda66dc6a2d79b54a18bdd20ad508d165edc73fd22e01b72ef85809456d6