[INFO] cloning repository https://github.com/ydm/sudoku
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ydm/sudoku" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fydm%2Fsudoku", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fydm%2Fsudoku'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9063f626dcb7189900939fc2545747c25458d1bd
[INFO] checking ydm/sudoku against master#0a8629bff642c3c3b84bb644c0099194f063b627 for pr-86231
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fydm%2Fsudoku" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ydm/sudoku on toolchain 0a8629bff642c3c3b84bb644c0099194f063b627
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ydm/sudoku
[INFO] finished tweaking git repo https://github.com/ydm/sudoku
[INFO] tweaked toml for git repo https://github.com/ydm/sudoku written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/ydm/sudoku already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+0a8629bff642c3c3b84bb644c0099194f063b627" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bf11c008641b9dec8db5f91abf1f618771e9a32033db19d3363c5faf0f1078f0
[INFO] running `Command { std: "docker" "start" "-a" "bf11c008641b9dec8db5f91abf1f618771e9a32033db19d3363c5faf0f1078f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf11c008641b9dec8db5f91abf1f618771e9a32033db19d3363c5faf0f1078f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf11c008641b9dec8db5f91abf1f618771e9a32033db19d3363c5faf0f1078f0", kill_on_drop: false }`
[INFO] [stdout] bf11c008641b9dec8db5f91abf1f618771e9a32033db19d3363c5faf0f1078f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+0a8629bff642c3c3b84bb644c0099194f063b627" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7f21348e43f2a56cec5d5bbdc50833b82a5d59279d4a375ebe47d453a93fc4a1
[INFO] running `Command { std: "docker" "start" "-a" "7f21348e43f2a56cec5d5bbdc50833b82a5d59279d4a375ebe47d453a93fc4a1", kill_on_drop: false }`
[INFO] [stderr]     Checking sudoku v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Sudoku`
[INFO] [stdout]    --> src/rules.rs:134:36
[INFO] [stdout]     |
[INFO] [stdout] 134 |     use crate::structure::{Solver, Sudoku};
[INFO] [stdout]     |                                    ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `Command { std: "docker" "inspect" "7f21348e43f2a56cec5d5bbdc50833b82a5d59279d4a375ebe47d453a93fc4a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f21348e43f2a56cec5d5bbdc50833b82a5d59279d4a375ebe47d453a93fc4a1", kill_on_drop: false }`
[INFO] [stdout] 7f21348e43f2a56cec5d5bbdc50833b82a5d59279d4a375ebe47d453a93fc4a1