[INFO] cloning repository https://github.com/ItzRealZun/libresudoku
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ItzRealZun/libresudoku" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FItzRealZun%2Flibresudoku", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FItzRealZun%2Flibresudoku'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 118692dea7a4be0073986d84dece9d78a9449b77
[INFO] checking ItzRealZun/libresudoku against a621e2b446eafb53c7a8569f225e0b8cc2429a68 for pr-162600
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FItzRealZun%2Flibresudoku" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ItzRealZun/libresudoku
[INFO] finished tweaking git repo https://github.com/ItzRealZun/libresudoku
[INFO] tweaked toml for git repo https://github.com/ItzRealZun/libresudoku written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ItzRealZun/libresudoku on toolchain a621e2b446eafb53c7a8569f225e0b8cc2429a68
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a621e2b446eafb53c7a8569f225e0b8cc2429a68" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ItzRealZun/libresudoku 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" "+a621e2b446eafb53c7a8569f225e0b8cc2429a68" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking ItzRealZun/libresudoku against a621e2b446eafb53c7a8569f225e0b8cc2429a68 for pr-162600
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FItzRealZun%2Flibresudoku" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ItzRealZun/libresudoku
[INFO] finished tweaking git repo https://github.com/ItzRealZun/libresudoku
[INFO] tweaked toml for git repo https://github.com/ItzRealZun/libresudoku written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ItzRealZun/libresudoku on toolchain a621e2b446eafb53c7a8569f225e0b8cc2429a68
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a621e2b446eafb53c7a8569f225e0b8cc2429a68" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ItzRealZun/libresudoku 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" "+a621e2b446eafb53c7a8569f225e0b8cc2429a68" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded instability v0.3.7
[INFO] [stderr]   Downloaded owo-colors v4.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] a1573f81d10081f2746a5e5368a5362448d832af50da2be5e9263a4f041b8c42
[INFO] running `Command { std: "docker" "start" "a1573f81d10081f2746a5e5368a5362448d832af50da2be5e9263a4f041b8c42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a1573f81d10081f2746a5e5368a5362448d832af50da2be5e9263a4f041b8c42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "a1573f81d10081f2746a5e5368a5362448d832af50da2be5e9263a4f041b8c42" "/opt/rustwide/cargo-home/bin/cargo" "+a621e2b446eafb53c7a8569f225e0b8cc2429a68" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a1573f81d10081f2746a5e5368a5362448d832af50da2be5e9263a4f041b8c42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "a1573f81d10081f2746a5e5368a5362448d832af50da2be5e9263a4f041b8c42" "/opt/rustwide/cargo-home/bin/cargo" "+a621e2b446eafb53c7a8569f225e0b8cc2429a68" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling owo-colors v4.2.2
[INFO] [stderr]     Checking tracing-core v0.1.34
[INFO] [stderr]     Checking thread_local v1.1.9
[INFO] [stderr]     Checking mio v1.0.4
[INFO] [stderr]     Checking parking_lot_core v0.9.11
[INFO] [stderr]     Checking memchr v2.7.5
[INFO] [stderr]     Checking signal-hook v0.3.18
[INFO] [stderr]    Compiling color-spantrace v0.3.0
[INFO] [stderr]     Checking bitflags v2.9.1
[INFO] [stderr]     Checking castaway v0.2.3
[INFO] [stderr]     Checking hashbrown v0.15.4
[INFO] [stderr]     Checking itertools v0.13.0
[INFO] [stderr]    Compiling darling_core v0.20.11
[INFO] [stderr]    Compiling strum_macros v0.26.4
[INFO] [stderr]     Checking rustc-demangle v0.1.25
[INFO] [stderr]    Compiling indoc v2.0.6
[INFO] [stderr]     Checking compact_str v0.8.1
[INFO] [stderr]     Checking rustix v0.38.44
[INFO] [stderr]     Checking eyre v0.6.12
[INFO] [stderr]     Checking parking_lot v0.12.4
[INFO] [stderr]     Checking unicode-width v0.2.0
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]     Checking tracing-subscriber v0.3.19
[INFO] [stderr]     Checking signal-hook-mio v0.2.4
[INFO] [stderr]     Checking object v0.36.7
[INFO] [stderr]     Checking lru v0.12.5
[INFO] [stderr]     Checking crossterm v0.28.1
[INFO] [stderr]     Checking tracing-error v0.2.1
[INFO] [stderr]     Checking strum v0.26.3
[INFO] [stderr]     Checking unicode-truncate v1.1.0
[INFO] [stderr]    Compiling darling_macro v0.20.11
[INFO] [stderr]    Compiling darling v0.20.11
[INFO] [stderr]    Compiling instability v0.3.7
[INFO] [stderr]     Checking ratatui v0.29.0
[INFO] [stderr]     Checking backtrace v0.3.75
[INFO] [stderr]     Checking color-eyre v0.6.5
[INFO] [stderr]     Checking libresudoku v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type alias `Cell` is never used
[INFO] [stdout]  --> src/sudoku.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | type Cell = u8;
[INFO] [stdout]   |      ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SIZES_COUNT` is never used
[INFO] [stdout]  --> src/sudoku.rs:2:7
[INFO] [stdout]   |
[INFO] [stdout] 2 | const SIZES_COUNT: usize = 4;
[INFO] [stdout]   |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DEFAULT_SIZE` is never used
[INFO] [stdout]  --> src/sudoku.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const DEFAULT_SIZE: usize = 9;
[INFO] [stdout]   |       ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SIZES` is never used
[INFO] [stdout]  --> src/sudoku.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | const SIZES: [usize; SIZES_COUNT] = [6, 9, 12, 16];
[INFO] [stdout]   |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Sudoku` is never constructed
[INFO] [stdout]  --> src/sudoku.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Sudoku {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `print` are never used
[INFO] [stdout]   --> src/sudoku.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Sudoku {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 14 |     pub fn new(grid_size: usize) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn print(&self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Cell` is never used
[INFO] [stdout]  --> src/sudoku.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | type Cell = u8;
[INFO] [stdout]   |      ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SIZES_COUNT` is never used
[INFO] [stdout]  --> src/sudoku.rs:2:7
[INFO] [stdout]   |
[INFO] [stdout] 2 | const SIZES_COUNT: usize = 4;
[INFO] [stdout]   |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DEFAULT_SIZE` is never used
[INFO] [stdout]  --> src/sudoku.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const DEFAULT_SIZE: usize = 9;
[INFO] [stdout]   |       ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SIZES` is never used
[INFO] [stdout]  --> src/sudoku.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | const SIZES: [usize; SIZES_COUNT] = [6, 9, 12, 16];
[INFO] [stdout]   |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Sudoku` is never constructed
[INFO] [stdout]  --> src/sudoku.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Sudoku {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `print` are never used
[INFO] [stdout]   --> src/sudoku.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Sudoku {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 14 |     pub fn new(grid_size: usize) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn print(&self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.29s
[INFO] running `Command { std: "docker" "inspect" "a1573f81d10081f2746a5e5368a5362448d832af50da2be5e9263a4f041b8c42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1573f81d10081f2746a5e5368a5362448d832af50da2be5e9263a4f041b8c42", kill_on_drop: false }`
[INFO] [stdout] a1573f81d10081f2746a5e5368a5362448d832af50da2be5e9263a4f041b8c42
