[INFO] cloning repository https://github.com/ctroy978/othelo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ctroy978/othelo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fctroy978%2Fothelo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fctroy978%2Fothelo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5d288677b97d4b4a4f56f9a1357be022e67cb2f0
[INFO] checking ctroy978/othelo against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fctroy978%2Fothelo" "/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/ctroy978/othelo on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ctroy978/othelo
[INFO] finished tweaking git repo https://github.com/ctroy978/othelo
[INFO] tweaked toml for git repo https://github.com/ctroy978/othelo written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/ctroy978/othelo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 60b70f1cc6dd723f4fcf47aa74543527b9133cfa9d580c80f45e921b63c47b00
[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" "60b70f1cc6dd723f4fcf47aa74543527b9133cfa9d580c80f45e921b63c47b00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60b70f1cc6dd723f4fcf47aa74543527b9133cfa9d580c80f45e921b63c47b00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60b70f1cc6dd723f4fcf47aa74543527b9133cfa9d580c80f45e921b63c47b00", kill_on_drop: false }`
[INFO] [stdout] 60b70f1cc6dd723f4fcf47aa74543527b9133cfa9d580c80f45e921b63c47b00
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a6491ee964aaae9228919480f08cd8d29cbe27285c5050b39aebc828849d433a
[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" "a6491ee964aaae9228919480f08cd8d29cbe27285c5050b39aebc828849d433a", kill_on_drop: false }`
[INFO] [stderr]     Checking othelo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `legal`
[INFO] [stdout]   --> src/game/structs/board.rs:36:17
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let mut legal = false;
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_legal`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut b = Board::new();
[INFO] [stdout]   |         ----^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/game/structs/board.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let mut legal = false;
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_legal_move`
[INFO] [stdout]    --> src/game/structs/board.rs:128:12
[INFO] [stdout]     |
[INFO] [stdout] 128 |     pub fn is_legal_move(&self, x: i32, y: i32, whoami: char)-> bool{
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `legal`
[INFO] [stdout]   --> src/game/structs/board.rs:36:17
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let mut legal = false;
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_legal`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut b = Board::new();
[INFO] [stdout]   |         ----^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/game/structs/board.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let mut legal = false;
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_legal_move`
[INFO] [stdout]    --> src/game/structs/board.rs:128:12
[INFO] [stdout]     |
[INFO] [stdout] 128 |     pub fn is_legal_move(&self, x: i32, y: i32, whoami: char)-> bool{
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "a6491ee964aaae9228919480f08cd8d29cbe27285c5050b39aebc828849d433a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6491ee964aaae9228919480f08cd8d29cbe27285c5050b39aebc828849d433a", kill_on_drop: false }`
[INFO] [stdout] a6491ee964aaae9228919480f08cd8d29cbe27285c5050b39aebc828849d433a