[INFO] cloning repository https://github.com/lucassith/rust-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/lucassith/rust-sudoku-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flucassith%2Frust-sudoku-solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flucassith%2Frust-sudoku-solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8cbe42e2f9e7620812522d99f062a482ab48c9d9
[INFO] checking lucassith/rust-sudoku-solver against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flucassith%2Frust-sudoku-solver" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lucassith/rust-sudoku-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/lucassith/rust-sudoku-solver
[INFO] finished tweaking git repo https://github.com/lucassith/rust-sudoku-solver
[INFO] tweaked toml for git repo https://github.com/lucassith/rust-sudoku-solver written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/lucassith/rust-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio v0.3.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] fe801ff3566386f05e36025eafdad97dd51f5d2423648b10acdec7a69d8230d3
[INFO] running `Command { std: "docker" "start" "-a" "fe801ff3566386f05e36025eafdad97dd51f5d2423648b10acdec7a69d8230d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe801ff3566386f05e36025eafdad97dd51f5d2423648b10acdec7a69d8230d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe801ff3566386f05e36025eafdad97dd51f5d2423648b10acdec7a69d8230d3", kill_on_drop: false }`
[INFO] [stdout] fe801ff3566386f05e36025eafdad97dd51f5d2423648b10acdec7a69d8230d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] f8a0a6ed5b9d2f727530a445d086159e9974e2c32d2a229bd68d0e2adf6e0c1e
[INFO] running `Command { std: "docker" "start" "-a" "f8a0a6ed5b9d2f727530a445d086159e9974e2c32d2a229bd68d0e2adf6e0c1e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking smallvec v1.5.1
[INFO] [stderr]     Checking futures-core v0.3.8
[INFO] [stderr]     Checking pin-project-lite v0.2.0
[INFO] [stderr]    Compiling tokio v0.3.5
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking parking_lot_core v0.8.1
[INFO] [stderr]     Checking mio v0.7.6
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking signal-hook-registry v1.2.2
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]    Compiling tokio-macros v0.3.1
[INFO] [stderr]     Checking sudoku v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Arc`, `Mutex`
[INFO] [stdout]  --> src/main.rs:9:17
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::sync::{Arc, Mutex};
[INFO] [stdout]   |                 ^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Add`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::ops::Add;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Table` is imported redundantly
[INFO] [stdout]    --> src/table.rs:131:9
[INFO] [stdout]     |
[INFO] [stdout] 131 |     use super::Table;
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout] 132 |     use crate::point::Point;
[INFO] [stdout] 133 |     use crate::*;
[INFO] [stdout]     |         -------- the item `Table` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Point` is imported redundantly
[INFO] [stdout]    --> src/table.rs:132:9
[INFO] [stdout]     |
[INFO] [stdout] 132 |     use crate::point::Point;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 133 |     use crate::*;
[INFO] [stdout]     |         -------- the item `Point` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `CoordinateError` is imported redundantly
[INFO] [stdout]    --> src/table.rs:135:9
[INFO] [stdout]     |
[INFO] [stdout] 133 |     use crate::*;
[INFO] [stdout]     |         -------- the item `CoordinateError` is already imported here
[INFO] [stdout] 134 |     use crate::point::Axis;
[INFO] [stdout] 135 |     use crate::point::CoordinateError;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::point::Point`
[INFO] [stdout]   --> src/fillers/simple_filler.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |     use crate::point::Point;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::SquareTable`
[INFO] [stdout]   --> src/fillers/simple_filler.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     use crate::SquareTable;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::point::CoordinateError`
[INFO] [stdout]   --> src/fillers/simple_filler.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     use crate::point::CoordinateError;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::point::Axis`
[INFO] [stdout]   --> src/fillers/simple_filler.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     use crate::point::Axis;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Point` is imported redundantly
[INFO] [stdout]   --> src/point_selection/line_point_selection.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     use crate::point::Point;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 43 |     use super::*;
[INFO] [stdout]    |         -------- the item `Point` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `SquareTable` is imported redundantly
[INFO] [stdout]   --> src/point_selection/line_point_selection.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     use super::*;
[INFO] [stdout]    |         -------- the item `SquareTable` is already imported here
[INFO] [stdout] 44 |     use crate::SquareTable;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `CoordinateError` is imported redundantly
[INFO] [stdout]   --> src/point_selection/line_point_selection.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     use super::*;
[INFO] [stdout]    |         -------- the item `CoordinateError` is already imported here
[INFO] [stdout] 44 |     use crate::SquareTable;
[INFO] [stdout] 45 |     use crate::point::CoordinateError;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Axis` is imported redundantly
[INFO] [stdout]   --> src/point_selection/line_point_selection.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     use super::*;
[INFO] [stdout]    |         -------- the item `Axis` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 46 |     use crate::point::Axis;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Point` is imported redundantly
[INFO] [stdout]   --> src/point_selection/empty_point_search.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |     use crate::point::Point;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 53 |     use crate::point::CoordinateError;
[INFO] [stdout] 54 |     use super::*;
[INFO] [stdout]    |         -------- the item `Point` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Selectable` is imported redundantly
[INFO] [stdout]   --> src/point_selection/empty_point_search.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     use super::*;
[INFO] [stdout]    |         -------- the item `Selectable` is already imported here
[INFO] [stdout] 55 |     use crate::Selectable;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `SquareTable` is imported redundantly
[INFO] [stdout]   --> src/point_selection/empty_point_search.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     use super::*;
[INFO] [stdout]    |         -------- the item `SquareTable` is already imported here
[INFO] [stdout] 55 |     use crate::Selectable;
[INFO] [stdout] 56 |     use crate::SquareTable;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arc`, `Mutex`
[INFO] [stdout]  --> src/main.rs:9:17
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::sync::{Arc, Mutex};
[INFO] [stdout]   |                 ^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Add`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::ops::Add;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/fillers/simple_filler.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |         let x = SimpleFiller{};
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.59s
[INFO] running `Command { std: "docker" "inspect" "f8a0a6ed5b9d2f727530a445d086159e9974e2c32d2a229bd68d0e2adf6e0c1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8a0a6ed5b9d2f727530a445d086159e9974e2c32d2a229bd68d0e2adf6e0c1e", kill_on_drop: false }`
[INFO] [stdout] f8a0a6ed5b9d2f727530a445d086159e9974e2c32d2a229bd68d0e2adf6e0c1e