[INFO] cloning repository https://github.com/Piturnah/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/Piturnah/sudoku-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPiturnah%2Fsudoku-solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPiturnah%2Fsudoku-solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 99e77f077b6b41489419dbe0970225c89e9037fb
[INFO] testing Piturnah/sudoku-solver against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPiturnah%2Fsudoku-solver" "/workspace/builds/worker-25/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-25/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Piturnah/sudoku-solver on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Piturnah/sudoku-solver
[INFO] finished tweaking git repo https://github.com/Piturnah/sudoku-solver
[INFO] tweaked toml for git repo https://github.com/Piturnah/sudoku-solver written to /workspace/builds/worker-25/source/Cargo.toml
[INFO] crate git repo https://github.com/Piturnah/sudoku-solver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 043855359c89f187ee257e80cb1f5177dbcca5c5ebc1b0bcd1169e39b46c3292
[INFO] running `Command { std: "docker" "start" "-a" "043855359c89f187ee257e80cb1f5177dbcca5c5ebc1b0bcd1169e39b46c3292", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "043855359c89f187ee257e80cb1f5177dbcca5c5ebc1b0bcd1169e39b46c3292", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "043855359c89f187ee257e80cb1f5177dbcca5c5ebc1b0bcd1169e39b46c3292", kill_on_drop: false }`
[INFO] [stdout] 043855359c89f187ee257e80cb1f5177dbcca5c5ebc1b0bcd1169e39b46c3292
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 699711b6082dde8882d9b86dbe12331a54cea60817f4e4587be21ba35bc6d086
[INFO] running `Command { std: "docker" "start" "-a" "699711b6082dde8882d9b86dbe12331a54cea60817f4e4587be21ba35bc6d086", kill_on_drop: false }`
[INFO] [stderr]    Compiling sudoku-solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/main.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |           todo!();
[INFO] [stdout]    |           ------- any code following this expression is unreachable
[INFO] [stdout] 30 | 
[INFO] [stdout] 31 | /         if self.check() {
[INFO] [stdout] 32 | |             return Some(self);
[INFO] [stdout] 33 | |         };
[INFO] [stdout]    | |__________^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/main.rs:35:13
[INFO] [stdout]    |
[INFO] [stdout] 35 |         for y in 0..10 {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/main.rs:36:17
[INFO] [stdout]    |
[INFO] [stdout] 36 |             for x in 0..10 {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.32s
[INFO] running `Command { std: "docker" "inspect" "699711b6082dde8882d9b86dbe12331a54cea60817f4e4587be21ba35bc6d086", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "699711b6082dde8882d9b86dbe12331a54cea60817f4e4587be21ba35bc6d086", kill_on_drop: false }`
[INFO] [stdout] 699711b6082dde8882d9b86dbe12331a54cea60817f4e4587be21ba35bc6d086
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 368b68c98ecfc5859db6419f553008087eec688289755e86c1ac0bd887ef9b1d
[INFO] running `Command { std: "docker" "start" "-a" "368b68c98ecfc5859db6419f553008087eec688289755e86c1ac0bd887ef9b1d", 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]    Compiling sudoku-solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/main.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |           todo!();
[INFO] [stdout]    |           ------- any code following this expression is unreachable
[INFO] [stdout] 30 | 
[INFO] [stdout] 31 | /         if self.check() {
[INFO] [stdout] 32 | |             return Some(self);
[INFO] [stdout] 33 | |         };
[INFO] [stdout]    | |__________^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/main.rs:35:13
[INFO] [stdout]    |
[INFO] [stdout] 35 |         for y in 0..10 {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/main.rs:36:17
[INFO] [stdout]    |
[INFO] [stdout] 36 |             for x in 0..10 {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.46s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/sudoku_solver-b6dde459b8364844)
[INFO] running `Command { std: "docker" "inspect" "368b68c98ecfc5859db6419f553008087eec688289755e86c1ac0bd887ef9b1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "368b68c98ecfc5859db6419f553008087eec688289755e86c1ac0bd887ef9b1d", kill_on_drop: false }`
[INFO] [stdout] 368b68c98ecfc5859db6419f553008087eec688289755e86c1ac0bd887ef9b1d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d5e7d0a843c23b43e4f9d68066ea27d296280fa1fd70eee8b773a1c1a2ba7c31
[INFO] running `Command { std: "docker" "start" "-a" "d5e7d0a843c23b43e4f9d68066ea27d296280fa1fd70eee8b773a1c1a2ba7c31", kill_on_drop: false }`
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/main.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |           todo!();
[INFO] [stderr]    |           ------- any code following this expression is unreachable
[INFO] [stderr] 30 | 
[INFO] [stderr] 31 | /         if self.check() {
[INFO] [stderr] 32 | |             return Some(self);
[INFO] [stderr] 33 | |         };
[INFO] [stderr]    | |__________^ unreachable statement
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]   --> src/main.rs:35:13
[INFO] [stderr]    |
[INFO] [stderr] 35 |         for y in 0..10 {
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/main.rs:36:17
[INFO] [stderr]    |
[INFO] [stderr] 36 |             for x in 0..10 {
[INFO] [stderr]    |                 ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: `sudoku-solver` (bin "sudoku-solver" test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.37s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/sudoku_solver-b6dde459b8364844)
[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" "d5e7d0a843c23b43e4f9d68066ea27d296280fa1fd70eee8b773a1c1a2ba7c31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5e7d0a843c23b43e4f9d68066ea27d296280fa1fd70eee8b773a1c1a2ba7c31", kill_on_drop: false }`
[INFO] [stdout] d5e7d0a843c23b43e4f9d68066ea27d296280fa1fd70eee8b773a1c1a2ba7c31