[INFO] cloning repository https://github.com/BryceGerst/Sudoku-Solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BryceGerst/Sudoku-Solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBryceGerst%2FSudoku-Solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBryceGerst%2FSudoku-Solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f3e7d9e5c7670a9d3f3ccb6ec2573e0939182807
[INFO] checking BryceGerst/Sudoku-Solver/f3e7d9e5c7670a9d3f3ccb6ec2573e0939182807 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBryceGerst%2FSudoku-Solver" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BryceGerst/Sudoku-Solver on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/BryceGerst/Sudoku-Solver
[INFO] finished tweaking git repo https://github.com/BryceGerst/Sudoku-Solver
[INFO] tweaked toml for git repo https://github.com/BryceGerst/Sudoku-Solver written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/BryceGerst/Sudoku-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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libloading v0.7.2
[INFO] [stderr]   Downloaded conrod_derive v0.76.0
[INFO] [stderr]   Downloaded conrod_winit v0.76.0
[INFO] [stderr]   Downloaded conrod_glium v0.76.0
[INFO] [stderr]   Downloaded pkg-config v0.3.23
[INFO] [stderr]   Downloaded conrod_core v0.76.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fc1ddde04e71170b9ea02f57a92f414aa0362031a179a8d490fa8ad30d6cc507
[INFO] running `Command { std: "docker" "start" "-a" "fc1ddde04e71170b9ea02f57a92f414aa0362031a179a8d490fa8ad30d6cc507", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fc1ddde04e71170b9ea02f57a92f414aa0362031a179a8d490fa8ad30d6cc507", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc1ddde04e71170b9ea02f57a92f414aa0362031a179a8d490fa8ad30d6cc507", kill_on_drop: false }`
[INFO] [stdout] fc1ddde04e71170b9ea02f57a92f414aa0362031a179a8d490fa8ad30d6cc507
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c61df51488f4f15a9951953be975ac1cb6d175c2bdaea711f78ff693f54d74e
[INFO] running `Command { std: "docker" "start" "-a" "9c61df51488f4f15a9951953be975ac1cb6d175c2bdaea711f78ff693f54d74e", kill_on_drop: false }`
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[INFO] [stderr]    Compiling unicode-xid v0.1.0
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[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memchr v2.4.1
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[INFO] [stderr]     Checking rustc-demangle v0.1.21
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[INFO] [stderr]     Checking takeable-option v0.5.0
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[INFO] [stderr]     Checking conrod_winit v0.76.0
[INFO] [stderr]     Checking find_folder v0.3.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling conrod_derive v0.76.0
[INFO] [stderr]     Checking pistoncore-input v1.0.1
[INFO] [stderr]     Checking smithay-client-toolkit v0.6.6
[INFO] [stderr]     Checking smithay-client-toolkit v0.12.3
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[INFO] [stderr]     Checking copypasta v0.6.3
[INFO] [stderr]     Checking conrod_core v0.76.0
[INFO] [stderr]     Checking glutin v0.25.1
[INFO] [stderr]     Checking conrod_glium v0.76.0
[INFO] [stderr]     Checking sudoku_solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `is_square` is never used
[INFO] [stdout]  --> src/solver.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub trait CheckablySquare {
[INFO] [stdout]   |           --------------- method in this trait
[INFO] [stdout] 5 |     fn is_square(&self) -> bool;
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_square` is never used
[INFO] [stdout]  --> src/solver.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub trait CheckablySquare {
[INFO] [stdout]   |           --------------- method in this trait
[INFO] [stdout] 5 |     fn is_square(&self) -> bool;
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` 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 1m 30s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: quick-xml v0.22.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "9c61df51488f4f15a9951953be975ac1cb6d175c2bdaea711f78ff693f54d74e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c61df51488f4f15a9951953be975ac1cb6d175c2bdaea711f78ff693f54d74e", kill_on_drop: false }`
[INFO] [stdout] 9c61df51488f4f15a9951953be975ac1cb6d175c2bdaea711f78ff693f54d74e