[INFO] cloning repository https://github.com/rustedmoon/sudoku-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rustedmoon/sudoku-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frustedmoon%2Fsudoku-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frustedmoon%2Fsudoku-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ba60b3c28db88c26e1779b0e80198aa2336df036
[INFO] checking rustedmoon/sudoku-rs against try#1f308f12738d8cc40bb23bf0c8114b37c164bb49 for pr-137268
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frustedmoon%2Fsudoku-rs" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rustedmoon/sudoku-rs on toolchain 1f308f12738d8cc40bb23bf0c8114b37c164bb49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f308f12738d8cc40bb23bf0c8114b37c164bb49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rustedmoon/sudoku-rs
[INFO] finished tweaking git repo https://github.com/rustedmoon/sudoku-rs
[INFO] tweaked toml for git repo https://github.com/rustedmoon/sudoku-rs written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/rustedmoon/sudoku-rs 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" "+1f308f12738d8cc40bb23bf0c8114b37c164bb49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1f308f12738d8cc40bb23bf0c8114b37c164bb49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 160b34028789c142239e7645c9cd3566af9da3b2439a70ef237372c4b0f1923f
[INFO] running `Command { std: "docker" "start" "-a" "160b34028789c142239e7645c9cd3566af9da3b2439a70ef237372c4b0f1923f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "160b34028789c142239e7645c9cd3566af9da3b2439a70ef237372c4b0f1923f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "160b34028789c142239e7645c9cd3566af9da3b2439a70ef237372c4b0f1923f", kill_on_drop: false }`
[INFO] [stdout] 160b34028789c142239e7645c9cd3566af9da3b2439a70ef237372c4b0f1923f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1f308f12738d8cc40bb23bf0c8114b37c164bb49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 911fe0aa33f69505bd698d235a76e25c6412bef36c457e1ab2b10da489b655dc
[INFO] running `Command { std: "docker" "start" "-a" "911fe0aa33f69505bd698d235a76e25c6412bef36c457e1ab2b10da489b655dc", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.74
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]     Checking utf8parse v0.2.1
[INFO] [stderr]     Checking colorchoice v1.0.0
[INFO] [stderr]     Checking anstyle-query v1.0.2
[INFO] [stderr]     Checking anstyle v1.0.4
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking clap_lex v0.6.0
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]     Checking sudoku-engine v0.1.0 (/opt/rustwide/workdir/sudoku-engine)
[INFO] [stderr]     Checking anstyle-parse v0.2.3
[INFO] [stderr]     Checking anstream v0.6.5
[INFO] [stdout] warning: unused variable: `sudoku`
[INFO] [stdout]  --> sudoku-engine/examples/sudoku.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let sudoku = Sudoku::generate(BoardSize::Nine, Difficulty::Impossible);
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_sudoku`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking clap_builder v4.4.12
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.46
[INFO] [stderr]    Compiling clap_derive v4.4.7
[INFO] [stderr]     Checking clap v4.4.12
[INFO] [stderr]     Checking sudoku-cli v0.1.0 (/opt/rustwide/workdir/sudoku-cli)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.42s
[INFO] running `Command { std: "docker" "inspect" "911fe0aa33f69505bd698d235a76e25c6412bef36c457e1ab2b10da489b655dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "911fe0aa33f69505bd698d235a76e25c6412bef36c457e1ab2b10da489b655dc", kill_on_drop: false }`
[INFO] [stdout] 911fe0aa33f69505bd698d235a76e25c6412bef36c457e1ab2b10da489b655dc