[INFO] cloning repository https://github.com/T-O-R-U-S/chess
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/T-O-R-U-S/chess" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FT-O-R-U-S%2Fchess", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FT-O-R-U-S%2Fchess'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 67145f19afd841aadda0746ef6bc051db029876e
[INFO] testing T-O-R-U-S/chess against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FT-O-R-U-S%2Fchess" "/workspace/builds/worker-15/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/T-O-R-U-S/chess on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/T-O-R-U-S/chess
[INFO] finished tweaking git repo https://github.com/T-O-R-U-S/chess
[INFO] tweaked toml for git repo https://github.com/T-O-R-U-S/chess written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate git repo https://github.com/T-O-R-U-S/chess already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 392483cc0d4cdd4d46da0c65eaa895022211d2c2ade1ccc2bd6e6b4bc7f730fb
[INFO] running `Command { std: "docker" "start" "-a" "392483cc0d4cdd4d46da0c65eaa895022211d2c2ade1ccc2bd6e6b4bc7f730fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "392483cc0d4cdd4d46da0c65eaa895022211d2c2ade1ccc2bd6e6b4bc7f730fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "392483cc0d4cdd4d46da0c65eaa895022211d2c2ade1ccc2bd6e6b4bc7f730fb", kill_on_drop: false }`
[INFO] [stdout] 392483cc0d4cdd4d46da0c65eaa895022211d2c2ade1ccc2bd6e6b4bc7f730fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6cb8cd0d84fc0bb603d326581d22e2c2bcc6c64b26ed0710ff69ba90584debcb
[INFO] running `Command { std: "docker" "start" "-a" "6cb8cd0d84fc0bb603d326581d22e2c2bcc6c64b26ed0710ff69ba90584debcb", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling terminal_size v0.1.17
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling console v0.14.1
[INFO] [stderr]    Compiling chess v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/board/pieces.rs:67:24
[INFO] [stdout]    |
[INFO] [stdout] 67 |             Piece::  Pawn(x, y, s, has_moved) => {
[INFO] [stdout]    |                                 ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `has_moved`
[INFO] [stdout]   --> src/board/pieces.rs:67:27
[INFO] [stdout]    |
[INFO] [stdout] 67 |             Piece::  Pawn(x, y, s, has_moved) => {
[INFO] [stdout]    |                                    ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_has_moved`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `default`
[INFO] [stdout]   --> src/board/pieces.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |                 let default = || {
[INFO] [stdout]    |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_default`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x_1`
[INFO] [stdout]   --> src/board/pieces.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 84 |                 let x_1 = x+1;
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_x_1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y_1`
[INFO] [stdout]   --> src/board/pieces.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |                 let y_1 = y+1;
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_y_1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_pos`
[INFO] [stdout]   --> src/board/pieces.rs:65:29
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn movement(&mut self, new_pos: (isize, isize), board: &mut Board) -> Result<()> {
[INFO] [stdout]    |                                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_pos`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `board`
[INFO] [stdout]   --> src/board/pieces.rs:65:54
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn movement(&mut self, new_pos: (isize, isize), board: &mut Board) -> Result<()> {
[INFO] [stdout]    |                                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_option`
[INFO] [stdout]   --> src/board/pieces.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn to_option(&self) -> Option<Piece> {
[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: `set_pos`
[INFO] [stdout]   --> src/board/pieces.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub fn set_pos(&self, prev_pos:(isize, isize), new_pos: (isize, isize), board: &mut Board) -> Option<Piece> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.29s
[INFO] running `Command { std: "docker" "inspect" "6cb8cd0d84fc0bb603d326581d22e2c2bcc6c64b26ed0710ff69ba90584debcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cb8cd0d84fc0bb603d326581d22e2c2bcc6c64b26ed0710ff69ba90584debcb", kill_on_drop: false }`
[INFO] [stdout] 6cb8cd0d84fc0bb603d326581d22e2c2bcc6c64b26ed0710ff69ba90584debcb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 25a91d18e4d49ddb7b944773afaa5477bf9b063325be0bccbaa182f880fc2f64
[INFO] running `Command { std: "docker" "start" "-a" "25a91d18e4d49ddb7b944773afaa5477bf9b063325be0bccbaa182f880fc2f64", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling chess v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/board/pieces.rs:67:24
[INFO] [stdout]    |
[INFO] [stdout] 67 |             Piece::  Pawn(x, y, s, has_moved) => {
[INFO] [stdout]    |                                 ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `has_moved`
[INFO] [stdout]   --> src/board/pieces.rs:67:27
[INFO] [stdout]    |
[INFO] [stdout] 67 |             Piece::  Pawn(x, y, s, has_moved) => {
[INFO] [stdout]    |                                    ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_has_moved`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `default`
[INFO] [stdout]   --> src/board/pieces.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |                 let default = || {
[INFO] [stdout]    |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_default`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x_1`
[INFO] [stdout]   --> src/board/pieces.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 84 |                 let x_1 = x+1;
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_x_1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y_1`
[INFO] [stdout]   --> src/board/pieces.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |                 let y_1 = y+1;
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_y_1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_pos`
[INFO] [stdout]   --> src/board/pieces.rs:65:29
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn movement(&mut self, new_pos: (isize, isize), board: &mut Board) -> Result<()> {
[INFO] [stdout]    |                                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_pos`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `board`
[INFO] [stdout]   --> src/board/pieces.rs:65:54
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn movement(&mut self, new_pos: (isize, isize), board: &mut Board) -> Result<()> {
[INFO] [stdout]    |                                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_option`
[INFO] [stdout]   --> src/board/pieces.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn to_option(&self) -> Option<Piece> {
[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: `set_pos`
[INFO] [stdout]   --> src/board/pieces.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub fn set_pos(&self, prev_pos:(isize, isize), new_pos: (isize, isize), board: &mut Board) -> Option<Piece> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 9.15s
[INFO] running `Command { std: "docker" "inspect" "25a91d18e4d49ddb7b944773afaa5477bf9b063325be0bccbaa182f880fc2f64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25a91d18e4d49ddb7b944773afaa5477bf9b063325be0bccbaa182f880fc2f64", kill_on_drop: false }`
[INFO] [stdout] 25a91d18e4d49ddb7b944773afaa5477bf9b063325be0bccbaa182f880fc2f64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1d80997ccb4d1939de7a4f5be3bb284b0e21cf5fd042080a0dccfc14ab3041d3
[INFO] running `Command { std: "docker" "start" "-a" "1d80997ccb4d1939de7a4f5be3bb284b0e21cf5fd042080a0dccfc14ab3041d3", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/board/pieces.rs:67:24
[INFO] [stderr]    |
[INFO] [stderr] 67 |             Piece::  Pawn(x, y, s, has_moved) => {
[INFO] [stderr]    |                                 ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `has_moved`
[INFO] [stderr]   --> src/board/pieces.rs:67:27
[INFO] [stderr]    |
[INFO] [stderr] 67 |             Piece::  Pawn(x, y, s, has_moved) => {
[INFO] [stderr]    |                                    ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_has_moved`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `default`
[INFO] [stderr]   --> src/board/pieces.rs:80:9
[INFO] [stderr]    |
[INFO] [stderr] 80 |                 let default = || {
[INFO] [stderr]    |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_default`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x_1`
[INFO] [stderr]   --> src/board/pieces.rs:84:9
[INFO] [stderr]    |
[INFO] [stderr] 84 |                 let x_1 = x+1;
[INFO] [stderr]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_x_1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y_1`
[INFO] [stderr]   --> src/board/pieces.rs:85:9
[INFO] [stderr]    |
[INFO] [stderr] 85 |                 let y_1 = y+1;
[INFO] [stderr]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_y_1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `new_pos`
[INFO] [stderr]   --> src/board/pieces.rs:65:29
[INFO] [stderr]    |
[INFO] [stderr] 65 |     pub fn movement(&mut self, new_pos: (isize, isize), board: &mut Board) -> Result<()> {
[INFO] [stderr]    |                                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_pos`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `board`
[INFO] [stderr]   --> src/board/pieces.rs:65:54
[INFO] [stderr]    |
[INFO] [stderr] 65 |     pub fn movement(&mut self, new_pos: (isize, isize), board: &mut Board) -> Result<()> {
[INFO] [stderr]    |                                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `to_option`
[INFO] [stderr]   --> src/board/pieces.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |     fn to_option(&self) -> Option<Piece> {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `set_pos`
[INFO] [stderr]   --> src/board/pieces.rs:57:9
[INFO] [stderr]    |
[INFO] [stderr] 57 |     pub fn set_pos(&self, prev_pos:(isize, isize), new_pos: (isize, isize), board: &mut Board) -> Option<Piece> {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `chess` (bin "chess" test) generated 9 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/chess-38c8ac38e363224a)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1d80997ccb4d1939de7a4f5be3bb284b0e21cf5fd042080a0dccfc14ab3041d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d80997ccb4d1939de7a4f5be3bb284b0e21cf5fd042080a0dccfc14ab3041d3", kill_on_drop: false }`
[INFO] [stdout] 1d80997ccb4d1939de7a4f5be3bb284b0e21cf5fd042080a0dccfc14ab3041d3