[INFO] cloning repository https://github.com/Lait-au-Cafe/sudoku
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Lait-au-Cafe/sudoku" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLait-au-Cafe%2Fsudoku", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLait-au-Cafe%2Fsudoku'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bb0591c0e62f2b5323a6ccdf0920da06a2556a94
[INFO] testing Lait-au-Cafe/sudoku 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%2FLait-au-Cafe%2Fsudoku" "/workspace/builds/worker-52/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-52/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Lait-au-Cafe/sudoku 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/Lait-au-Cafe/sudoku
[INFO] finished tweaking git repo https://github.com/Lait-au-Cafe/sudoku
[INFO] tweaked toml for git repo https://github.com/Lait-au-Cafe/sudoku written to /workspace/builds/worker-52/source/Cargo.toml
[INFO] crate git repo https://github.com/Lait-au-Cafe/sudoku 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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] 33441a2fa86461711304abf42772e5eeb475b9a059b1dfec9df18c07b111b0e9
[INFO] running `Command { std: "docker" "start" "-a" "33441a2fa86461711304abf42772e5eeb475b9a059b1dfec9df18c07b111b0e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "33441a2fa86461711304abf42772e5eeb475b9a059b1dfec9df18c07b111b0e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33441a2fa86461711304abf42772e5eeb475b9a059b1dfec9df18c07b111b0e9", kill_on_drop: false }`
[INFO] [stdout] 33441a2fa86461711304abf42772e5eeb475b9a059b1dfec9df18c07b111b0e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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] 0481e72cdd097347cb9fbae2cd7382357b065641e63fca4b5eee866b87556b30
[INFO] running `Command { std: "docker" "start" "-a" "0481e72cdd097347cb9fbae2cd7382357b065641e63fca4b5eee866b87556b30", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]    Compiling sudoku v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `unwrap`
[INFO] [stdout]   --> src/sudoku.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn unwrap(&self) -> Option<usize> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `difference`
[INFO] [stdout]   --> src/sudoku.rs:93:12
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn difference(&self, other: &Self) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.74s
[INFO] running `Command { std: "docker" "inspect" "0481e72cdd097347cb9fbae2cd7382357b065641e63fca4b5eee866b87556b30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0481e72cdd097347cb9fbae2cd7382357b065641e63fca4b5eee866b87556b30", kill_on_drop: false }`
[INFO] [stdout] 0481e72cdd097347cb9fbae2cd7382357b065641e63fca4b5eee866b87556b30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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] 715654e6e63d00761c42248c678e1bfc265ba505d03333bcf2a072f015140bd9
[INFO] running `Command { std: "docker" "start" "-a" "715654e6e63d00761c42248c678e1bfc265ba505d03333bcf2a072f015140bd9", 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: associated function is never used: `unwrap`
[INFO] [stdout]   --> src/sudoku.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn unwrap(&self) -> Option<usize> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `difference`
[INFO] [stdout]   --> src/sudoku.rs:93:12
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn difference(&self, other: &Self) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.33s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/sudoku-98fdc4fee3f399a7)
[INFO] running `Command { std: "docker" "inspect" "715654e6e63d00761c42248c678e1bfc265ba505d03333bcf2a072f015140bd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "715654e6e63d00761c42248c678e1bfc265ba505d03333bcf2a072f015140bd9", kill_on_drop: false }`
[INFO] [stdout] 715654e6e63d00761c42248c678e1bfc265ba505d03333bcf2a072f015140bd9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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] ffea85ee4624b814fa28a10012761251978a1deec95d5de1b8adacd260bf1603
[INFO] running `Command { std: "docker" "start" "-a" "ffea85ee4624b814fa28a10012761251978a1deec95d5de1b8adacd260bf1603", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] 
[INFO] [stderr] warning: associated function is never used: `unwrap`
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/sudoku.rs:17:12
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 17 |     pub fn unwrap(&self) -> Option<usize> {
[INFO] [stdout] 
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `difference`
[INFO] [stderr]   --> src/sudoku.rs:93:12
[INFO] [stderr]    |
[INFO] [stderr] 93 |     pub fn difference(&self, other: &Self) -> Self {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `sudoku` (bin "sudoku" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1m 34s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/sudoku-98fdc4fee3f399a7)
[INFO] running `Command { std: "docker" "inspect" "ffea85ee4624b814fa28a10012761251978a1deec95d5de1b8adacd260bf1603", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffea85ee4624b814fa28a10012761251978a1deec95d5de1b8adacd260bf1603", kill_on_drop: false }`
[INFO] [stdout] ffea85ee4624b814fa28a10012761251978a1deec95d5de1b8adacd260bf1603