[INFO] cloning repository https://github.com/helmutschneider/sudoku
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/helmutschneider/sudoku" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhelmutschneider%2Fsudoku", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhelmutschneider%2Fsudoku'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 222ed1ee53c369d2c9e3e9adf949892041d483a0
[INFO] testing helmutschneider/sudoku against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhelmutschneider%2Fsudoku" "/workspace/builds/worker-15/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/helmutschneider/sudoku on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/helmutschneider/sudoku
[INFO] finished tweaking git repo https://github.com/helmutschneider/sudoku
[INFO] tweaked toml for git repo https://github.com/helmutschneider/sudoku written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate git repo https://github.com/helmutschneider/sudoku already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e957f0c8d10caf225d4656fc60f5d49b77ed84fc75452e479e20ec44d34d5b37
[INFO] running `Command { std: "docker" "start" "-a" "e957f0c8d10caf225d4656fc60f5d49b77ed84fc75452e479e20ec44d34d5b37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e957f0c8d10caf225d4656fc60f5d49b77ed84fc75452e479e20ec44d34d5b37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e957f0c8d10caf225d4656fc60f5d49b77ed84fc75452e479e20ec44d34d5b37", kill_on_drop: false }`
[INFO] [stdout] e957f0c8d10caf225d4656fc60f5d49b77ed84fc75452e479e20ec44d34d5b37
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] acfcc27b11625ddc706af279a110d48fb76e7b71d1190072cb29318fae73d66f
[INFO] running `Command { std: "docker" "start" "-a" "acfcc27b11625ddc706af279a110d48fb76e7b71d1190072cb29318fae73d66f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling sudoku v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> src/board.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::digit::Digit`
[INFO] [stdout]  --> src/index.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::digit::Digit;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `CellIndex`, `ColumnIndex`, `RowIndex`
[INFO] [stdout]  --> src/solver.rs:4:20
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::index::{CellIndex, ColumnIndex, RowIndex};
[INFO] [stdout]   |                    ^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.47s
[INFO] running `Command { std: "docker" "inspect" "acfcc27b11625ddc706af279a110d48fb76e7b71d1190072cb29318fae73d66f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acfcc27b11625ddc706af279a110d48fb76e7b71d1190072cb29318fae73d66f", kill_on_drop: false }`
[INFO] [stdout] acfcc27b11625ddc706af279a110d48fb76e7b71d1190072cb29318fae73d66f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3528e2386ca69296a312f25fae1f597b4d9dde1f80403d20e279084f1b81416b
[INFO] running `Command { std: "docker" "start" "-a" "3528e2386ca69296a312f25fae1f597b4d9dde1f80403d20e279084f1b81416b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling sudoku v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> src/board.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 23.20s
[INFO] running `Command { std: "docker" "inspect" "3528e2386ca69296a312f25fae1f597b4d9dde1f80403d20e279084f1b81416b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3528e2386ca69296a312f25fae1f597b4d9dde1f80403d20e279084f1b81416b", kill_on_drop: false }`
[INFO] [stdout] 3528e2386ca69296a312f25fae1f597b4d9dde1f80403d20e279084f1b81416b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b4d3f210e3a74ac98cf5ee899f4e6e9cf8ac07d8b2c018075086918d8ce7ec4d
[INFO] running `Command { std: "docker" "start" "-a" "b4d3f210e3a74ac98cf5ee899f4e6e9cf8ac07d8b2c018075086918d8ce7ec4d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] 
[INFO] [stderr] warning: unused import: `std::collections::HashSet`
[INFO] [stdout] running 9 tests
[INFO] [stderr]  --> src/board.rs:6:5
[INFO] [stdout] test board::test_get_column ... ok
[INFO] [stderr]   |
[INFO] [stdout] test board::test_get_row ... ok
[INFO] [stderr] 6 | use std::collections::HashSet;
[INFO] [stdout] test digit::test_from_char ... ok
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] test board::test_set_digit ... ok
[INFO] [stderr]   |
[INFO] [stdout] test digit::test_from_u8 ... ok
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] test digit::test_to_u8 ... ok
[INFO] [stderr] 
[INFO] [stdout] test index::test_block_get ... ok
[INFO] [stderr] warning: `sudoku` (bin "sudoku" test) generated 1 warning
[INFO] [stdout] test index::test_index_get_section ... ok
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.26s
[INFO] [stdout] test solver::related_cells_strategy_eliminate_digits ... ok
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/sudoku-5ffd0d7a61db3ea1)
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b4d3f210e3a74ac98cf5ee899f4e6e9cf8ac07d8b2c018075086918d8ce7ec4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4d3f210e3a74ac98cf5ee899f4e6e9cf8ac07d8b2c018075086918d8ce7ec4d", kill_on_drop: false }`
[INFO] [stdout] b4d3f210e3a74ac98cf5ee899f4e6e9cf8ac07d8b2c018075086918d8ce7ec4d