[INFO] cloning repository https://github.com/Pungyeon/rust-tactoe
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Pungyeon/rust-tactoe" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPungyeon%2Frust-tactoe", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPungyeon%2Frust-tactoe'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 33c9895132464ebc3c8edf4068e2af1cd2f346eb
[INFO] checking Pungyeon/rust-tactoe against try#b0d0ea232bdae12fa8da8491a91ae1db029990ef for pr-84037
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPungyeon%2Frust-tactoe" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Pungyeon/rust-tactoe on toolchain b0d0ea232bdae12fa8da8491a91ae1db029990ef
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Pungyeon/rust-tactoe
[INFO] finished tweaking git repo https://github.com/Pungyeon/rust-tactoe
[INFO] tweaked toml for git repo https://github.com/Pungyeon/rust-tactoe written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/Pungyeon/rust-tactoe already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 587eec42ce93b2fbe00ff93667d9e425b79a2d70a527672b6fee458d6a1a9484
[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" "587eec42ce93b2fbe00ff93667d9e425b79a2d70a527672b6fee458d6a1a9484", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "587eec42ce93b2fbe00ff93667d9e425b79a2d70a527672b6fee458d6a1a9484", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "587eec42ce93b2fbe00ff93667d9e425b79a2d70a527672b6fee458d6a1a9484", kill_on_drop: false }`
[INFO] [stdout] 587eec42ce93b2fbe00ff93667d9e425b79a2d70a527672b6fee458d6a1a9484
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 68976e2783e12fa67d9f7444f761fef43f5bb549aad2aa214bfb7c1667f78241
[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" "68976e2783e12fa67d9f7444f761fef43f5bb549aad2aa214bfb7c1667f78241", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_play v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `txt`
[INFO] [stdout]    --> src/main.rs:209:16
[INFO] [stdout]     |
[INFO] [stdout] 209 |             Ok(txt) => {
[INFO] [stdout]     |                ^^^ help: if this is intentional, prefix it with an underscore: `_txt`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `txt`
[INFO] [stdout]    --> src/main.rs:209:16
[INFO] [stdout]     |
[INFO] [stdout] 209 |             Ok(txt) => {
[INFO] [stdout]     |                ^^^ help: if this is intentional, prefix it with an underscore: `_txt`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "68976e2783e12fa67d9f7444f761fef43f5bb549aad2aa214bfb7c1667f78241", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68976e2783e12fa67d9f7444f761fef43f5bb549aad2aa214bfb7c1667f78241", kill_on_drop: false }`
[INFO] [stdout] 68976e2783e12fa67d9f7444f761fef43f5bb549aad2aa214bfb7c1667f78241