[INFO] cloning repository https://github.com/robertefry/rust-sudoku
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/robertefry/rust-sudoku" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobertefry%2Frust-sudoku", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobertefry%2Frust-sudoku'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 00f531ba9d93f7616dd2294de26f8c518178d7ea
[INFO] checking robertefry/rust-sudoku against master#e1613686e0efc80a1a18b1263625450a8de3fb04 for pr-154492-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobertefry%2Frust-sudoku" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/robertefry/rust-sudoku
[INFO] finished tweaking git repo https://github.com/robertefry/rust-sudoku
[INFO] tweaked toml for git repo https://github.com/robertefry/rust-sudoku written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/robertefry/rust-sudoku on toolchain e1613686e0efc80a1a18b1263625450a8de3fb04
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e1613686e0efc80a1a18b1263625450a8de3fb04" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/robertefry/rust-sudoku 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" "+e1613686e0efc80a1a18b1263625450a8de3fb04" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.15
[INFO] [stderr]   Downloaded crossbeam-deque v0.8.3
[INFO] [stderr]   Downloaded either v1.9.0
[INFO] [stderr]   Downloaded csv-core v0.1.11
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.16
[INFO] [stderr]   Downloaded windows-core v0.51.1
[INFO] [stderr]   Downloaded num-format v0.4.4
[INFO] [stderr]   Downloaded iana-time-zone v0.1.58
[INFO] [stderr]   Downloaded rayon-core v1.12.0
[INFO] [stderr]   Downloaded rayon v1.8.0
[INFO] [stderr]   Downloaded itertools v0.12.0
[INFO] [stderr]   Downloaded chrono v0.4.31
[INFO] [stderr]   Downloaded syn v2.0.39
[INFO] [stderr]   Downloaded csv v1.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+e1613686e0efc80a1a18b1263625450a8de3fb04" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f4ad7c2cd816d54df98765727c700b1b12766c8658702a04967c24440bf6a54c
[INFO] running `Command { std: "docker" "start" "-a" "f4ad7c2cd816d54df98765727c700b1b12766c8658702a04967c24440bf6a54c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4ad7c2cd816d54df98765727c700b1b12766c8658702a04967c24440bf6a54c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4ad7c2cd816d54df98765727c700b1b12766c8658702a04967c24440bf6a54c", kill_on_drop: false }`
[INFO] [stdout] f4ad7c2cd816d54df98765727c700b1b12766c8658702a04967c24440bf6a54c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+e1613686e0efc80a1a18b1263625450a8de3fb04" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f1c3a8d5c4b599ab5538c31ee0b2b9b79618f59ad63b436ac02fe6bd6f660483
[INFO] running `Command { std: "docker" "start" "-a" "f1c3a8d5c4b599ab5538c31ee0b2b9b79618f59ad63b436ac02fe6bd6f660483", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]    Compiling serde v1.0.193
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]     Checking iana-time-zone v0.1.58
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]     Checking arrayvec v0.7.4
[INFO] [stderr]     Checking util v0.1.0 (/opt/rustwide/workdir/util)
[INFO] [stdout] warning: unused import: `benchmark::*`
[INFO] [stdout]  --> util/src/lib.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub use benchmark::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking itertools v0.12.0
[INFO] [stdout] warning: unused import: `benchmark::*`
[INFO] [stdout]  --> util/src/lib.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub use benchmark::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking num-format v0.4.4
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]     Checking csv-core v0.1.11
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking getrandom v0.2.11
[INFO] [stderr]     Checking rayon v1.8.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking chrono v0.4.31
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking csv v1.3.0
[INFO] [stderr]     Checking sudoku v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.22s
[INFO] running `Command { std: "docker" "inspect" "f1c3a8d5c4b599ab5538c31ee0b2b9b79618f59ad63b436ac02fe6bd6f660483", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1c3a8d5c4b599ab5538c31ee0b2b9b79618f59ad63b436ac02fe6bd6f660483", kill_on_drop: false }`
[INFO] [stdout] f1c3a8d5c4b599ab5538c31ee0b2b9b79618f59ad63b436ac02fe6bd6f660483