[INFO] cloning repository https://github.com/kgtkr/othello
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kgtkr/othello" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkgtkr%2Fothello", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkgtkr%2Fothello'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 98701536d5c8700feaae439a78d0c4d6a7c0425f
[INFO] checking kgtkr/othello against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkgtkr%2Fothello" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kgtkr/othello on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kgtkr/othello
[INFO] finished tweaking git repo https://github.com/kgtkr/othello
[INFO] tweaked toml for git repo https://github.com/kgtkr/othello written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/kgtkr/othello already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 06bf20938317e91f0c009ed5027ecf81e302f486e7637d12eff911f350e7b366
[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" "06bf20938317e91f0c009ed5027ecf81e302f486e7637d12eff911f350e7b366", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "06bf20938317e91f0c009ed5027ecf81e302f486e7637d12eff911f350e7b366", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06bf20938317e91f0c009ed5027ecf81e302f486e7637d12eff911f350e7b366", kill_on_drop: false }`
[INFO] [stdout] 06bf20938317e91f0c009ed5027ecf81e302f486e7637d12eff911f350e7b366
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dfe86d353674d1976b8c5ab78a7e32306b3949d6f9ab2cc51884b30090a43252
[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" "dfe86d353674d1976b8c5ab78a7e32306b3949d6f9ab2cc51884b30090a43252", kill_on_drop: false }`
[INFO] [stderr]     Checking othello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Black`
[INFO] [stdout]  --> src/game.rs:3:3
[INFO] [stdout]   |
[INFO] [stdout] 3 |   Black,
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `While`
[INFO] [stdout]  --> src/game.rs:4:3
[INFO] [stdout]   |
[INFO] [stdout] 4 |   While,
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Cell`
[INFO] [stdout]  --> src/game.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | type Cell = Option<Piece>;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Board`
[INFO] [stdout]  --> src/game.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | type Board = [[Cell; 8]; 8];
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Next`
[INFO] [stdout]   --> src/game.rs:12:3
[INFO] [stdout]    |
[INFO] [stdout] 12 |   Next(Piece),
[INFO] [stdout]    |   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Pass`
[INFO] [stdout]   --> src/game.rs:13:3
[INFO] [stdout]    |
[INFO] [stdout] 13 |   Pass(Piece),
[INFO] [stdout]    |   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `IndexOutOf`
[INFO] [stdout]   --> src/game.rs:14:3
[INFO] [stdout]    |
[INFO] [stdout] 14 |   IndexOutOf,
[INFO] [stdout]    |   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Already`
[INFO] [stdout]   --> src/game.rs:15:3
[INFO] [stdout]    |
[INFO] [stdout] 15 |   Already,
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ZeroReverse`
[INFO] [stdout]   --> src/game.rs:16:3
[INFO] [stdout]    |
[INFO] [stdout] 16 |   ZeroReverse,
[INFO] [stdout]    |   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `End`
[INFO] [stdout]   --> src/game.rs:17:3
[INFO] [stdout]    |
[INFO] [stdout] 17 |   End(usize, usize),
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Game`
[INFO] [stdout]   --> src/game.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct Game {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated constant is never used: `size`
[INFO] [stdout]   --> src/game.rs:26:3
[INFO] [stdout]    |
[INFO] [stdout] 26 |   const size: usize = 8;
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/game.rs:28:10
[INFO] [stdout]    |
[INFO] [stdout] 28 |   pub fn new() -> Game {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next`
[INFO] [stdout]   --> src/game.rs:63:10
[INFO] [stdout]    |
[INFO] [stdout] 63 |   pub fn next() -> GameResult {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated constant `size` should have an upper case name
[INFO] [stdout]   --> src/game.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |   const size: usize = 8;
[INFO] [stdout]    |         ^^^^ help: convert the identifier to upper case: `SIZE`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Black`
[INFO] [stdout]  --> src/game.rs:3:3
[INFO] [stdout]   |
[INFO] [stdout] 3 |   Black,
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `While`
[INFO] [stdout]  --> src/game.rs:4:3
[INFO] [stdout]   |
[INFO] [stdout] 4 |   While,
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Cell`
[INFO] [stdout]  --> src/game.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | type Cell = Option<Piece>;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Board`
[INFO] [stdout]  --> src/game.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | type Board = [[Cell; 8]; 8];
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Next`
[INFO] [stdout]   --> src/game.rs:12:3
[INFO] [stdout]    |
[INFO] [stdout] 12 |   Next(Piece),
[INFO] [stdout]    |   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Pass`
[INFO] [stdout]   --> src/game.rs:13:3
[INFO] [stdout]    |
[INFO] [stdout] 13 |   Pass(Piece),
[INFO] [stdout]    |   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `IndexOutOf`
[INFO] [stdout]   --> src/game.rs:14:3
[INFO] [stdout]    |
[INFO] [stdout] 14 |   IndexOutOf,
[INFO] [stdout]    |   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Already`
[INFO] [stdout]   --> src/game.rs:15:3
[INFO] [stdout]    |
[INFO] [stdout] 15 |   Already,
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ZeroReverse`
[INFO] [stdout]   --> src/game.rs:16:3
[INFO] [stdout]    |
[INFO] [stdout] 16 |   ZeroReverse,
[INFO] [stdout]    |   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `End`
[INFO] [stdout]   --> src/game.rs:17:3
[INFO] [stdout]    |
[INFO] [stdout] 17 |   End(usize, usize),
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Game`
[INFO] [stdout]   --> src/game.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct Game {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated constant is never used: `size`
[INFO] [stdout]   --> src/game.rs:26:3
[INFO] [stdout]    |
[INFO] [stdout] 26 |   const size: usize = 8;
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/game.rs:28:10
[INFO] [stdout]    |
[INFO] [stdout] 28 |   pub fn new() -> Game {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next`
[INFO] [stdout]   --> src/game.rs:63:10
[INFO] [stdout]    |
[INFO] [stdout] 63 |   pub fn next() -> GameResult {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated constant `size` should have an upper case name
[INFO] [stdout]   --> src/game.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |   const size: usize = 8;
[INFO] [stdout]    |         ^^^^ help: convert the identifier to upper case: `SIZE`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "dfe86d353674d1976b8c5ab78a7e32306b3949d6f9ab2cc51884b30090a43252", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfe86d353674d1976b8c5ab78a7e32306b3949d6f9ab2cc51884b30090a43252", kill_on_drop: false }`
[INFO] [stdout] dfe86d353674d1976b8c5ab78a7e32306b3949d6f9ab2cc51884b30090a43252