[INFO] cloning repository https://github.com/jovialen/suduko-solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jovialen/suduko-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjovialen%2Fsuduko-solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjovialen%2Fsuduko-solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4e778ed86a12bf6f08569e419595359a00542404
[INFO] checking jovialen/suduko-solver against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjovialen%2Fsuduko-solver" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jovialen/suduko-solver on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jovialen/suduko-solver
[INFO] finished tweaking git repo https://github.com/jovialen/suduko-solver
[INFO] tweaked toml for git repo https://github.com/jovialen/suduko-solver written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/jovialen/suduko-solver 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5faa18b6adb48285f4f8d5da99851430d9919634677882d8affb03b10f5ff4ee
[INFO] running `Command { std: "docker" "start" "-a" "5faa18b6adb48285f4f8d5da99851430d9919634677882d8affb03b10f5ff4ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5faa18b6adb48285f4f8d5da99851430d9919634677882d8affb03b10f5ff4ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5faa18b6adb48285f4f8d5da99851430d9919634677882d8affb03b10f5ff4ee", kill_on_drop: false }`
[INFO] [stdout] 5faa18b6adb48285f4f8d5da99851430d9919634677882d8affb03b10f5ff4ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a7645b7715229348f7faaf303f5e443f3fbdb52a28980e3a030c720cb9663a6f
[INFO] running `Command { std: "docker" "start" "-a" "a7645b7715229348f7faaf303f5e443f3fbdb52a28980e3a030c720cb9663a6f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.63
[INFO] [stderr]    Compiling quote v1.0.28
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling serde v1.0.164
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]    Compiling rustix v0.37.20
[INFO] [stderr]    Compiling rayon-core v1.11.0
[INFO] [stderr]    Compiling serde_json v1.0.99
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]     Checking plotters-backend v0.3.5
[INFO] [stderr]     Checking ciborium-io v0.2.1
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking clap_builder v4.3.8
[INFO] [stderr]     Checking plotters-svg v0.3.5
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking ciborium-ll v0.2.1
[INFO] [stderr]    Compiling syn v2.0.22
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking regex-syntax v0.7.2
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking walkdir v2.3.3
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking anes v0.1.6
[INFO] [stderr]     Checking sudoku-solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `StandardSudoku`
[INFO] [stdout]  --> src/main.rs:5:29
[INFO] [stdout]   |
[INFO] [stdout] 5 | use sudoku_solver::{Sudoku, StandardSudoku};
[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]     Checking plotters v0.3.5
[INFO] [stderr]     Checking io-lifetimes v1.0.11
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]     Checking regex v1.8.4
[INFO] [stderr]     Checking rayon v1.7.0
[INFO] [stderr]     Checking clap v4.3.8
[INFO] [stderr]     Checking is-terminal v0.4.7
[INFO] [stderr]    Compiling serde_derive v1.0.164
[INFO] [stderr]     Checking ciborium v0.2.1
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.5.1
[INFO] [stdout] warning: unused import: `StandardSudoku`
[INFO] [stdout]  --> src/main.rs:5:29
[INFO] [stdout]   |
[INFO] [stdout] 5 | use sudoku_solver::{Sudoku, StandardSudoku};
[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` profile [unoptimized + debuginfo] target(s) in 24.48s
[INFO] running `Command { std: "docker" "inspect" "a7645b7715229348f7faaf303f5e443f3fbdb52a28980e3a030c720cb9663a6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7645b7715229348f7faaf303f5e443f3fbdb52a28980e3a030c720cb9663a6f", kill_on_drop: false }`
[INFO] [stdout] a7645b7715229348f7faaf303f5e443f3fbdb52a28980e3a030c720cb9663a6f