[INFO] cloning repository https://github.com/nickx720/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/nickx720/sudoku-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnickx720%2Fsudoku-solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnickx720%2Fsudoku-solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bdeab72f78dc1e7c5f28b1ee6fcf5c51572a02c0
[INFO] testing nickx720/sudoku-solver against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnickx720%2Fsudoku-solver" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nickx720/sudoku-solver on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nickx720/sudoku-solver
[INFO] finished tweaking git repo https://github.com/nickx720/sudoku-solver
[INFO] tweaked toml for git repo https://github.com/nickx720/sudoku-solver written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/nickx720/sudoku-solver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cf7326dea0386b9b386da54cfdde189db0b72d87f44887123f763f9f7a0539e7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "cf7326dea0386b9b386da54cfdde189db0b72d87f44887123f763f9f7a0539e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cf7326dea0386b9b386da54cfdde189db0b72d87f44887123f763f9f7a0539e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf7326dea0386b9b386da54cfdde189db0b72d87f44887123f763f9f7a0539e7", kill_on_drop: false }`
[INFO] [stdout] cf7326dea0386b9b386da54cfdde189db0b72d87f44887123f763f9f7a0539e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=forbid" "-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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d39ecefe407a77fec12625a4fed12c429e35ebdcb4bb3f282e9a2f799b558d95
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d39ecefe407a77fec12625a4fed12c429e35ebdcb4bb3f282e9a2f799b558d95", kill_on_drop: false }`
[INFO] [stderr]    Compiling sudoku v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value passed to `row` is never read
[INFO] [stdout]   --> src/main.rs:12:37
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn number_unassigned(&self, mut row: usize, mut col: usize) -> Vec<u32> {
[INFO] [stdout]    |                                     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value passed to `col` is never read
[INFO] [stdout]   --> src/main.rs:12:53
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn number_unassigned(&self, mut row: usize, mut col: usize) -> Vec<u32> {
[INFO] [stdout]    |                                                     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "d39ecefe407a77fec12625a4fed12c429e35ebdcb4bb3f282e9a2f799b558d95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d39ecefe407a77fec12625a4fed12c429e35ebdcb4bb3f282e9a2f799b558d95", kill_on_drop: false }`
[INFO] [stdout] d39ecefe407a77fec12625a4fed12c429e35ebdcb4bb3f282e9a2f799b558d95
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=forbid" "-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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3e4a838f94a327b1fcdd28d08131c585f1db846bfaa7bedec34ad2b8a923859d
[INFO] running `Command { std: "docker" "start" "-a" "3e4a838f94a327b1fcdd28d08131c585f1db846bfaa7bedec34ad2b8a923859d", kill_on_drop: false }`
[INFO] [stderr]    Compiling sudoku v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value passed to `row` is never read
[INFO] [stdout]   --> src/main.rs:12:37
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn number_unassigned(&self, mut row: usize, mut col: usize) -> Vec<u32> {
[INFO] [stdout]    |                                     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value passed to `col` is never read
[INFO] [stdout]   --> src/main.rs:12:53
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn number_unassigned(&self, mut row: usize, mut col: usize) -> Vec<u32> {
[INFO] [stdout]    |                                                     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "3e4a838f94a327b1fcdd28d08131c585f1db846bfaa7bedec34ad2b8a923859d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e4a838f94a327b1fcdd28d08131c585f1db846bfaa7bedec34ad2b8a923859d", kill_on_drop: false }`
[INFO] [stdout] 3e4a838f94a327b1fcdd28d08131c585f1db846bfaa7bedec34ad2b8a923859d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=forbid" "-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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6edaf97a32473a249322c3d2a0d885b94726eac4be2e68d7bc1a4e5d2ab0e72d
[INFO] running `Command { std: "docker" "start" "-a" "6edaf97a32473a249322c3d2a0d885b94726eac4be2e68d7bc1a4e5d2ab0e72d", kill_on_drop: false }`
[INFO] [stderr] warning: value passed to `row` is never read
[INFO] [stderr]   --> src/main.rs:12:37
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn number_unassigned(&self, mut row: usize, mut col: usize) -> Vec<u32> {
[INFO] [stderr]    |                                     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value passed to `col` is never read
[INFO] [stderr]   --> src/main.rs:12:53
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn number_unassigned(&self, mut row: usize, mut col: usize) -> Vec<u32> {
[INFO] [stderr]    |                                                     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/sudoku-37997b7162126a1e)
[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" "6edaf97a32473a249322c3d2a0d885b94726eac4be2e68d7bc1a4e5d2ab0e72d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6edaf97a32473a249322c3d2a0d885b94726eac4be2e68d7bc1a4e5d2ab0e72d", kill_on_drop: false }`
[INFO] [stdout] 6edaf97a32473a249322c3d2a0d885b94726eac4be2e68d7bc1a4e5d2ab0e72d