[INFO] fetching crate sudoku-rust 0.3.0...
[INFO] testing sudoku-rust-0.3.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate sudoku-rust 0.3.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate sudoku-rust 0.3.0
[INFO] finished tweaking crates.io crate sudoku-rust 0.3.0
[INFO] tweaked toml for crates.io crate sudoku-rust 0.3.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate sudoku-rust 0.3.0 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate sudoku-rust 0.3.0 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" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4c96b0bbeba17e428719ee793da4c735c83f821b3e716f517e33cbde984e37e5
[INFO] running `Command { std: "docker" "start" "-a" "4c96b0bbeba17e428719ee793da4c735c83f821b3e716f517e33cbde984e37e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c96b0bbeba17e428719ee793da4c735c83f821b3e716f517e33cbde984e37e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c96b0bbeba17e428719ee793da4c735c83f821b3e716f517e33cbde984e37e5", kill_on_drop: false }`
[INFO] [stdout] 4c96b0bbeba17e428719ee793da4c735c83f821b3e716f517e33cbde984e37e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 87e70e75878b47088d06f679b4ccd6ba18e3a5e1d024b2f15f1ec274c32b9976
[INFO] running `Command { std: "docker" "start" "-a" "87e70e75878b47088d06f679b4ccd6ba18e3a5e1d024b2f15f1ec274c32b9976", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling parking_lot_core v0.9.4
[INFO] [stderr]    Compiling signal-hook v0.3.14
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling smallvec v1.10.0
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]    Compiling unicode-segmentation v1.10.0
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling mio v0.8.5
[INFO] [stderr]    Compiling getrandom v0.2.8
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling signal-hook-mio v0.2.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling crossterm v0.25.0
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling tui v0.19.0
[INFO] [stderr]    Compiling sudoku-rust v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `grid` is never read
[INFO] [stdout]    --> src/lib.rs:170:9
[INFO] [stdout]     |
[INFO] [stdout] 170 |         grid[row][col].locked = false;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `thread`
[INFO] [stdout]  --> src/main.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{io, thread};
[INFO] [stdout]   |               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `DisableMouseCapture`
[INFO] [stdout]  --> src/main.rs:5:24
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crossterm::event::{DisableMouseCapture, EnableMouseCapture};
[INFO] [stdout]   |                        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `LeaveAlternateScreen` and `disable_raw_mode`
[INFO] [stdout]  --> src/main.rs:6:27
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crossterm::terminal::{disable_raw_mode, enable_raw_mode, LeaveAlternateScreen};
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^^                   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Cell`
[INFO] [stdout]  --> src/ui.rs:7:19
[INFO] [stdout]   |
[INFO] [stdout] 7 | use sudoku_rust::{Cell, SudokuBoard, N, SRN};
[INFO] [stdout]   |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Span` and `Text`
[INFO] [stdout]   --> src/ui.rs:11:17
[INFO] [stdout]    |
[INFO] [stdout] 11 | use tui::text::{Span, Text};
[INFO] [stdout]    |                 ^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BorderType`, `Borders`, `Row`, and `Table`
[INFO] [stdout]   --> src/ui.rs:12:27
[INFO] [stdout]    |
[INFO] [stdout] 12 | use tui::widgets::{Block, BorderType, Borders, Paragraph, Row, Table};
[INFO] [stdout]    |                           ^^^^^^^^^^  ^^^^^^^             ^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.79s
[INFO] running `Command { std: "docker" "inspect" "87e70e75878b47088d06f679b4ccd6ba18e3a5e1d024b2f15f1ec274c32b9976", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87e70e75878b47088d06f679b4ccd6ba18e3a5e1d024b2f15f1ec274c32b9976", kill_on_drop: false }`
[INFO] [stdout] 87e70e75878b47088d06f679b4ccd6ba18e3a5e1d024b2f15f1ec274c32b9976
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 01fe093eff9ae9e7425394eac8edbd636d9efd0fe90640079886517c3b90f903
[INFO] running `Command { std: "docker" "start" "-a" "01fe093eff9ae9e7425394eac8edbd636d9efd0fe90640079886517c3b90f903", kill_on_drop: false }`
[INFO] [stderr]    Compiling sudoku-rust v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `grid` is never read
[INFO] [stdout]    --> src/lib.rs:170:9
[INFO] [stdout]     |
[INFO] [stdout] 170 |         grid[row][col].locked = false;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `thread`
[INFO] [stdout]  --> src/main.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{io, thread};
[INFO] [stdout]   |               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `DisableMouseCapture`
[INFO] [stdout]  --> src/main.rs:5:24
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crossterm::event::{DisableMouseCapture, EnableMouseCapture};
[INFO] [stdout]   |                        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `LeaveAlternateScreen` and `disable_raw_mode`
[INFO] [stdout]  --> src/main.rs:6:27
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crossterm::terminal::{disable_raw_mode, enable_raw_mode, LeaveAlternateScreen};
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^^                   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Cell`
[INFO] [stdout]  --> src/ui.rs:7:19
[INFO] [stdout]   |
[INFO] [stdout] 7 | use sudoku_rust::{Cell, SudokuBoard, N, SRN};
[INFO] [stdout]   |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Span` and `Text`
[INFO] [stdout]   --> src/ui.rs:11:17
[INFO] [stdout]    |
[INFO] [stdout] 11 | use tui::text::{Span, Text};
[INFO] [stdout]    |                 ^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BorderType`, `Borders`, `Row`, and `Table`
[INFO] [stdout]   --> src/ui.rs:12:27
[INFO] [stdout]    |
[INFO] [stdout] 12 | use tui::widgets::{Block, BorderType, Borders, Paragraph, Row, Table};
[INFO] [stdout]    |                           ^^^^^^^^^^  ^^^^^^^             ^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `grid` is never read
[INFO] [stdout]    --> src/lib.rs:170:9
[INFO] [stdout]     |
[INFO] [stdout] 170 |         grid[row][col].locked = false;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "01fe093eff9ae9e7425394eac8edbd636d9efd0fe90640079886517c3b90f903", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01fe093eff9ae9e7425394eac8edbd636d9efd0fe90640079886517c3b90f903", kill_on_drop: false }`
[INFO] [stdout] 01fe093eff9ae9e7425394eac8edbd636d9efd0fe90640079886517c3b90f903
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 30752ab09a2b55a27ba04dc49ece221c0e04b567b8e6dfbf544d2b48b1c608d4
[INFO] running `Command { std: "docker" "start" "-a" "30752ab09a2b55a27ba04dc49ece221c0e04b567b8e6dfbf544d2b48b1c608d4", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `grid` is never read
[INFO] [stderr]    --> src/lib.rs:170:9
[INFO] [stderr]     |
[INFO] [stderr] 170 |         grid[row][col].locked = false;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `sudoku-rust` (lib) generated 1 warning
[INFO] [stderr] warning: `sudoku-rust` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: unused import: `std::time::Duration`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::time::Duration;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `thread`
[INFO] [stderr]  --> src/main.rs:2:15
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::{io, thread};
[INFO] [stderr]   |               ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `DisableMouseCapture`
[INFO] [stderr]  --> src/main.rs:5:24
[INFO] [stderr]   |
[INFO] [stderr] 5 | use crossterm::event::{DisableMouseCapture, EnableMouseCapture};
[INFO] [stderr]   |                        ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `LeaveAlternateScreen` and `disable_raw_mode`
[INFO] [stderr]  --> src/main.rs:6:27
[INFO] [stderr]   |
[INFO] [stderr] 6 | use crossterm::terminal::{disable_raw_mode, enable_raw_mode, LeaveAlternateScreen};
[INFO] [stderr]   |                           ^^^^^^^^^^^^^^^^                   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Cell`
[INFO] [stderr]  --> src/ui.rs:7:19
[INFO] [stderr]   |
[INFO] [stderr] 7 | use sudoku_rust::{Cell, SudokuBoard, N, SRN};
[INFO] [stderr]   |                   ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Span` and `Text`
[INFO] [stderr]   --> src/ui.rs:11:17
[INFO] [stderr]    |
[INFO] [stderr] 11 | use tui::text::{Span, Text};
[INFO] [stderr]    |                 ^^^^  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BorderType`, `Borders`, `Row`, and `Table`
[INFO] [stderr]   --> src/ui.rs:12:27
[INFO] [stderr]    |
[INFO] [stderr] 12 | use tui::widgets::{Block, BorderType, Borders, Paragraph, Row, Table};
[INFO] [stderr]    |                           ^^^^^^^^^^  ^^^^^^^             ^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `sudoku-rust` (bin "sudoku-rust" test) generated 7 warnings (run `cargo fix --bin "sudoku-rust" -p sudoku-rust --tests` to apply 7 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/sudoku_rust-f1818e15f748a4cc)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::check_solved ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/sudoku_rust-ac725282afd72feb)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests sudoku_rust
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "30752ab09a2b55a27ba04dc49ece221c0e04b567b8e6dfbf544d2b48b1c608d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30752ab09a2b55a27ba04dc49ece221c0e04b567b8e6dfbf544d2b48b1c608d4", kill_on_drop: false }`
[INFO] [stdout] 30752ab09a2b55a27ba04dc49ece221c0e04b567b8e6dfbf544d2b48b1c608d4
