[INFO] cloning repository https://github.com/kgtkr/othello
[INFO] running `"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"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkgtkr%2Fothello'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 98701536d5c8700feaae439a78d0c4d6a7c0425f
[INFO] checking kgtkr/othello against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkgtkr%2Fothello" "/workspace/builds/worker-12/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kgtkr/othello on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-12/source/Cargo.toml
[INFO] crate git repo https://github.com/kgtkr/othello already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "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] 667afacdddad2f0489ab6208a053e44487f93a5c5c6c7ca77a53c680044aa070
[INFO] running `"docker" "start" "-a" "667afacdddad2f0489ab6208a053e44487f93a5c5c6c7ca77a53c680044aa070"`
[INFO] [stderr]     Checking othello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variant is never constructed: `Black`
[INFO] [stderr]  --> src/game.rs:3:3
[INFO] [stderr]   |
[INFO] [stderr] 3 |   Black,
[INFO] [stderr]   |   ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `While`
[INFO] [stderr]  --> src/game.rs:4:3
[INFO] [stderr]   |
[INFO] [stderr] 4 |   While,
[INFO] [stderr]   |   ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Cell`
[INFO] [stderr]  --> src/game.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | type Cell = Option<Piece>;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Board`
[INFO] [stderr]  --> src/game.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | type Board = [[Cell; 8]; 8];
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Next`
[INFO] [stderr]   --> src/game.rs:12:3
[INFO] [stderr]    |
[INFO] [stderr] 12 |   Next(Piece),
[INFO] [stderr]    |   ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Pass`
[INFO] [stderr]   --> src/game.rs:13:3
[INFO] [stderr]    |
[INFO] [stderr] 13 |   Pass(Piece),
[INFO] [stderr]    |   ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `IndexOutOf`
[INFO] [stderr]   --> src/game.rs:14:3
[INFO] [stderr]    |
[INFO] [stderr] 14 |   IndexOutOf,
[INFO] [stderr]    |   ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Already`
[INFO] [stderr]   --> src/game.rs:15:3
[INFO] [stderr]    |
[INFO] [stderr] 15 |   Already,
[INFO] [stderr]    |   ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `ZeroReverse`
[INFO] [stderr]   --> src/game.rs:16:3
[INFO] [stderr]    |
[INFO] [stderr] 16 |   ZeroReverse,
[INFO] [stderr]    |   ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `End`
[INFO] [stderr]   --> src/game.rs:17:3
[INFO] [stderr]    |
[INFO] [stderr] 17 |   End(usize, usize),
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Game`
[INFO] [stderr]   --> src/game.rs:20:8
[INFO] [stderr]    |
[INFO] [stderr] 20 | struct Game {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated const is never used: `size`
[INFO] [stderr]   --> src/game.rs:26:3
[INFO] [stderr]    |
[INFO] [stderr] 26 |   const size: usize = 8;
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/game.rs:28:3
[INFO] [stderr]    |
[INFO] [stderr] 28 |   pub fn new() -> Game {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `next`
[INFO] [stderr]   --> src/game.rs:63:3
[INFO] [stderr]    |
[INFO] [stderr] 63 |   pub fn next() -> GameResult {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated constant `size` should have an upper case name
[INFO] [stderr]   --> src/game.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |   const size: usize = 8;
[INFO] [stderr]    |         ^^^^ help: convert the identifier to upper case: `SIZE`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 15 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Black`
[INFO] [stderr]  --> src/game.rs:3:3
[INFO] [stderr]   |
[INFO] [stderr] 3 |   Black,
[INFO] [stderr]   |   ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `While`
[INFO] [stderr]  --> src/game.rs:4:3
[INFO] [stderr]   |
[INFO] [stderr] 4 |   While,
[INFO] [stderr]   |   ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Cell`
[INFO] [stderr]  --> src/game.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | type Cell = Option<Piece>;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Board`
[INFO] [stderr]  --> src/game.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | type Board = [[Cell; 8]; 8];
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Next`
[INFO] [stderr]   --> src/game.rs:12:3
[INFO] [stderr]    |
[INFO] [stderr] 12 |   Next(Piece),
[INFO] [stderr]    |   ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Pass`
[INFO] [stderr]   --> src/game.rs:13:3
[INFO] [stderr]    |
[INFO] [stderr] 13 |   Pass(Piece),
[INFO] [stderr]    |   ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `IndexOutOf`
[INFO] [stderr]   --> src/game.rs:14:3
[INFO] [stderr]    |
[INFO] [stderr] 14 |   IndexOutOf,
[INFO] [stderr]    |   ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Already`
[INFO] [stderr]   --> src/game.rs:15:3
[INFO] [stderr]    |
[INFO] [stderr] 15 |   Already,
[INFO] [stderr]    |   ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `ZeroReverse`
[INFO] [stderr]   --> src/game.rs:16:3
[INFO] [stderr]    |
[INFO] [stderr] 16 |   ZeroReverse,
[INFO] [stderr]    |   ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `End`
[INFO] [stderr]   --> src/game.rs:17:3
[INFO] [stderr]    |
[INFO] [stderr] 17 |   End(usize, usize),
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Game`
[INFO] [stderr]   --> src/game.rs:20:8
[INFO] [stderr]    |
[INFO] [stderr] 20 | struct Game {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated const is never used: `size`
[INFO] [stderr]   --> src/game.rs:26:3
[INFO] [stderr]    |
[INFO] [stderr] 26 |   const size: usize = 8;
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/game.rs:28:3
[INFO] [stderr]    |
[INFO] [stderr] 28 |   pub fn new() -> Game {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `next`
[INFO] [stderr]   --> src/game.rs:63:3
[INFO] [stderr]    |
[INFO] [stderr] 63 |   pub fn next() -> GameResult {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated constant `size` should have an upper case name
[INFO] [stderr]   --> src/game.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |   const size: usize = 8;
[INFO] [stderr]    |         ^^^^ help: convert the identifier to upper case: `SIZE`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 15 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `"docker" "inspect" "667afacdddad2f0489ab6208a053e44487f93a5c5c6c7ca77a53c680044aa070"`
[INFO] running `"docker" "rm" "-f" "667afacdddad2f0489ab6208a053e44487f93a5c5c6c7ca77a53c680044aa070"`
[INFO] [stdout] 667afacdddad2f0489ab6208a053e44487f93a5c5c6c7ca77a53c680044aa070