[INFO] cloning repository https://github.com/airtoxin/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/airtoxin/rust-sudoku" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fairtoxin%2Frust-sudoku", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fairtoxin%2Frust-sudoku'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d113dc2137aee3e73461fef1b1ad1a667e41b4db
[INFO] checking airtoxin/rust-sudoku against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fairtoxin%2Frust-sudoku" "/workspace/builds/worker-93/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-93/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/airtoxin/rust-sudoku on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/airtoxin/rust-sudoku
[INFO] finished tweaking git repo https://github.com/airtoxin/rust-sudoku
[INFO] tweaked toml for git repo https://github.com/airtoxin/rust-sudoku written to /workspace/builds/worker-93/source/Cargo.toml
[INFO] crate git repo https://github.com/airtoxin/rust-sudoku already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef646f2417d78896aed878c907b5cdb2be7337c25d7dfd84e6cdb919009b2f63
[INFO] running `Command { std: "docker" "start" "-a" "ef646f2417d78896aed878c907b5cdb2be7337c25d7dfd84e6cdb919009b2f63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef646f2417d78896aed878c907b5cdb2be7337c25d7dfd84e6cdb919009b2f63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef646f2417d78896aed878c907b5cdb2be7337c25d7dfd84e6cdb919009b2f63", kill_on_drop: false }`
[INFO] [stdout] ef646f2417d78896aed878c907b5cdb2be7337c25d7dfd84e6cdb919009b2f63
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a934ec2eda246c7bd0c7ecbb2ffedbfc2a6e2653e7c4d0ed2d889e7c1b087487
[INFO] running `Command { std: "docker" "start" "-a" "a934ec2eda246c7bd0c7ecbb2ffedbfc2a6e2653e7c4d0ed2d889e7c1b087487", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.7
[INFO] [stderr]    Compiling syn v1.0.12
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]     Checking lock_api v0.3.2
[INFO] [stderr]     Checking libc v0.2.66
[INFO] [stderr]     Checking libloading v0.5.2
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[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking crc32fast v1.2.0
[INFO] [stderr]     Checking crossbeam-utils v0.7.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling glutin_egl_sys v0.1.4
[INFO] [stderr]    Compiling quote v0.6.13
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[INFO] [stderr]    Compiling wayland-scanner v0.21.13
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[INFO] [stderr]     Checking wayland-sys v0.21.13
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[INFO] [stderr]     Checking line_drawing v0.7.0
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[INFO] [stderr]     Checking rusttype v0.8.2
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[INFO] [stderr]     Checking piston2d-graphics v0.35.0
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]    Compiling wayland-client v0.21.13
[INFO] [stderr]    Compiling wayland-protocols v0.21.13
[INFO] [stderr]     Checking glutin_glx_sys v0.1.5
[INFO] [stderr]     Checking wayland-commons v0.21.13
[INFO] [stderr]    Compiling num-derive v0.2.5
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[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking tiff v0.3.1
[INFO] [stderr]     Checking image v0.22.3
[INFO] [stderr]     Checking piston2d-opengl_graphics v0.70.0
[INFO] [stderr]     Checking pistoncore-input v0.28.0
[INFO] [stderr]     Checking smithay-client-toolkit v0.4.6
[INFO] [stderr]     Checking pistoncore-window v0.44.0
[INFO] [stderr]     Checking winit v0.19.5
[INFO] [stderr]     Checking pistoncore-event_loop v0.49.0
[INFO] [stderr]     Checking piston v0.49.0
[INFO] [stderr]     Checking glutin v0.21.2
[INFO] [stderr]     Checking pistoncore-glutin_window v0.63.0
[INFO] [stderr]     Checking piston-spinner v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `RenderArgs`, `UpdateArgs`
[INFO] [stdout]   --> src/main.rs:13:21
[INFO] [stdout]    |
[INFO] [stdout] 13 | use piston::input::{RenderArgs, RenderEvent, UpdateArgs, UpdateEvent};
[INFO] [stdout]    |                     ^^^^^^^^^^               ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `RenderArgs`, `UpdateArgs`
[INFO] [stdout]   --> src/main.rs:13:21
[INFO] [stdout]    |
[INFO] [stdout] 13 | use piston::input::{RenderArgs, RenderEvent, UpdateArgs, UpdateEvent};
[INFO] [stdout]    |                     ^^^^^^^^^^               ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/main.rs:55:21
[INFO] [stdout]    |
[INFO] [stdout] 55 |         if let Some(args) = e.update_args() {}
[INFO] [stdout]    |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/main.rs:55:21
[INFO] [stdout]    |
[INFO] [stdout] 55 |         if let Some(args) = e.update_args() {}
[INFO] [stdout]    |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let mut game_board_view = GameBoardView::new(game_board_view_settings);
[INFO] [stdout]    |         ----^^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let mut game_board_view = GameBoardView::new(game_board_view_settings);
[INFO] [stdout]    |         ----^^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.29s
[INFO] running `Command { std: "docker" "inspect" "a934ec2eda246c7bd0c7ecbb2ffedbfc2a6e2653e7c4d0ed2d889e7c1b087487", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a934ec2eda246c7bd0c7ecbb2ffedbfc2a6e2653e7c4d0ed2d889e7c1b087487", kill_on_drop: false }`
[INFO] [stdout] a934ec2eda246c7bd0c7ecbb2ffedbfc2a6e2653e7c4d0ed2d889e7c1b087487