[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] checking T-O-R-U-S/chess against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FT-O-R-U-S%2Fchess" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/T-O-R-U-S/chess on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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-14/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" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f9e855618b886bf1c4e87d4d9e97426486dc6d34ee424f4e58e3c112c3da140e
[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" "f9e855618b886bf1c4e87d4d9e97426486dc6d34ee424f4e58e3c112c3da140e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9e855618b886bf1c4e87d4d9e97426486dc6d34ee424f4e58e3c112c3da140e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9e855618b886bf1c4e87d4d9e97426486dc6d34ee424f4e58e3c112c3da140e", kill_on_drop: false }`
[INFO] [stdout] f9e855618b886bf1c4e87d4d9e97426486dc6d34ee424f4e58e3c112c3da140e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b6ff6e717b232c1c8be2e15c38994ea4d1a0c664f210c7fa93507cc579f2eab3
[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" "b6ff6e717b232c1c8be2e15c38994ea4d1a0c664f210c7fa93507cc579f2eab3", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking console v0.14.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]     Checking thiserror v1.0.26
[INFO] [stderr]     Checking 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] [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 13.68s
[INFO] running `Command { std: "docker" "inspect" "b6ff6e717b232c1c8be2e15c38994ea4d1a0c664f210c7fa93507cc579f2eab3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6ff6e717b232c1c8be2e15c38994ea4d1a0c664f210c7fa93507cc579f2eab3", kill_on_drop: false }`
[INFO] [stdout] b6ff6e717b232c1c8be2e15c38994ea4d1a0c664f210c7fa93507cc579f2eab3