[INFO] cloning repository https://github.com/medzernik/checkers_game
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/medzernik/checkers_game" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmedzernik%2Fcheckers_game", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmedzernik%2Fcheckers_game'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 25fd0665c65e40184e750b922e9f819b940736f9
[INFO] checking medzernik/checkers_game against try#5e7498e6740d105521420ac0ab146e2c7a21596d for pr-138363
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmedzernik%2Fcheckers_game" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/medzernik/checkers_game on toolchain 5e7498e6740d105521420ac0ab146e2c7a21596d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5e7498e6740d105521420ac0ab146e2c7a21596d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/medzernik/checkers_game
[INFO] finished tweaking git repo https://github.com/medzernik/checkers_game
[INFO] tweaked toml for git repo https://github.com/medzernik/checkers_game written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/medzernik/checkers_game already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5e7498e6740d105521420ac0ab146e2c7a21596d" "fetch" "--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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+5e7498e6740d105521420ac0ab146e2c7a21596d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 21239972fbc4144851235283508f28e1d90abf58947162b7fcf0577d442d880e
[INFO] running `Command { std: "docker" "start" "-a" "21239972fbc4144851235283508f28e1d90abf58947162b7fcf0577d442d880e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "21239972fbc4144851235283508f28e1d90abf58947162b7fcf0577d442d880e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21239972fbc4144851235283508f28e1d90abf58947162b7fcf0577d442d880e", kill_on_drop: false }`
[INFO] [stdout] 21239972fbc4144851235283508f28e1d90abf58947162b7fcf0577d442d880e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "RUSTDOCFLAGS=--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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+5e7498e6740d105521420ac0ab146e2c7a21596d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca750f898fd76cae500b19d9af2e429be31281d0db315d94e61d3be766e12a20
[INFO] running `Command { std: "docker" "start" "-a" "ca750f898fd76cae500b19d9af2e429be31281d0db315d94e61d3be766e12a20", kill_on_drop: false }`
[INFO] [stderr]     Checking checkers_game v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0425]: cannot find value `to_` in this scope
[INFO] [stdout]    --> src/main.rs:111:60
[INFO] [stdout]     |
[INFO] [stdout] 111 |         if !(0..=7).contains(&to_row) || !(0..7).contains(&to_) {
[INFO] [stdout]     |                                                            ^^^ help: a local variable with a similar name exists: `to`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `to_` in this scope
[INFO] [stdout]    --> src/main.rs:111:60
[INFO] [stdout]     |
[INFO] [stdout] 111 |         if !(0..=7).contains(&to_row) || !(0..7).contains(&to_) {
[INFO] [stdout]     |                                                            ^^^ help: a local variable with a similar name exists: `to`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::process;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::process;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `checkers_game` (bin "checkers_game") due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `checkers_game` (bin "checkers_game" test) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "ca750f898fd76cae500b19d9af2e429be31281d0db315d94e61d3be766e12a20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca750f898fd76cae500b19d9af2e429be31281d0db315d94e61d3be766e12a20", kill_on_drop: false }`
[INFO] [stdout] ca750f898fd76cae500b19d9af2e429be31281d0db315d94e61d3be766e12a20