[INFO] cloning repository https://github.com/mkurth/rustysodoku
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mkurth/rustysodoku" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmkurth%2Frustysodoku", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmkurth%2Frustysodoku'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 29feba7bfa8914629753c1752bc4b8beb97fd78b
[INFO] checking mkurth/rustysodoku against try#6f12b8fe67b4eed2e838dab803ed9493b9d62c0f for pr-79073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmkurth%2Frustysodoku" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mkurth/rustysodoku on toolchain 6f12b8fe67b4eed2e838dab803ed9493b9d62c0f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mkurth/rustysodoku
[INFO] finished tweaking git repo https://github.com/mkurth/rustysodoku
[INFO] tweaked toml for git repo https://github.com/mkurth/rustysodoku written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/mkurth/rustysodoku already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 43a712dd981ca2b0ccf8d2af51a57e42c3200098610d25acd3a8eea80d804ce9
[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" "43a712dd981ca2b0ccf8d2af51a57e42c3200098610d25acd3a8eea80d804ce9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43a712dd981ca2b0ccf8d2af51a57e42c3200098610d25acd3a8eea80d804ce9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43a712dd981ca2b0ccf8d2af51a57e42c3200098610d25acd3a8eea80d804ce9", kill_on_drop: false }`
[INFO] [stdout] 43a712dd981ca2b0ccf8d2af51a57e42c3200098610d25acd3a8eea80d804ce9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 134934aff737efc243e65be23f2e0a7e36801fabd5d1c7649636dca2e332af15
[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" "134934aff737efc243e65be23f2e0a7e36801fabd5d1c7649636dca2e332af15", kill_on_drop: false }`
[INFO] [stderr]     Checking rustysodoku v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `cells`
[INFO] [stdout]   --> src/solver.rs:10:27
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn zip_with_all_solutions(cells: Vec<Vec<Cell>>) -> Vec<Vec<(Cell, Vec<usize>)>> {
[INFO] [stdout]    |                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_cells`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cells`
[INFO] [stdout]   --> src/solver.rs:14:32
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn reduce_impossible_solutions(cells: Vec<Vec<(Cell, Vec<usize>)>>) -> Vec<Vec<(Cell, Vec<usize>)>> {
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_cells`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cells`
[INFO] [stdout]   --> src/solver.rs:18:29
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn reduce_possible_solution(cells: Vec<Vec<(Cell, Vec<usize>)>>) -> Vec<Vec<(Cell, Vec<usize>)>> {
[INFO] [stdout]    |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_cells`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `zip_with_all_solutions`
[INFO] [stdout]   --> src/solver.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn zip_with_all_solutions(cells: Vec<Vec<Cell>>) -> Vec<Vec<(Cell, Vec<usize>)>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `reduce_impossible_solutions`
[INFO] [stdout]   --> src/solver.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn reduce_impossible_solutions(cells: Vec<Vec<(Cell, Vec<usize>)>>) -> Vec<Vec<(Cell, Vec<usize>)>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `reduce_possible_solution`
[INFO] [stdout]   --> src/solver.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn reduce_possible_solution(cells: Vec<Vec<(Cell, Vec<usize>)>>) -> Vec<Vec<(Cell, Vec<usize>)>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cells`
[INFO] [stdout]   --> src/solver.rs:10:27
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn zip_with_all_solutions(cells: Vec<Vec<Cell>>) -> Vec<Vec<(Cell, Vec<usize>)>> {
[INFO] [stdout]    |                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_cells`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cells`
[INFO] [stdout]   --> src/solver.rs:14:32
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn reduce_impossible_solutions(cells: Vec<Vec<(Cell, Vec<usize>)>>) -> Vec<Vec<(Cell, Vec<usize>)>> {
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_cells`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cells`
[INFO] [stdout]   --> src/solver.rs:18:29
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn reduce_possible_solution(cells: Vec<Vec<(Cell, Vec<usize>)>>) -> Vec<Vec<(Cell, Vec<usize>)>> {
[INFO] [stdout]    |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_cells`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `zip_with_all_solutions`
[INFO] [stdout]   --> src/solver.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn zip_with_all_solutions(cells: Vec<Vec<Cell>>) -> Vec<Vec<(Cell, Vec<usize>)>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `reduce_impossible_solutions`
[INFO] [stdout]   --> src/solver.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn reduce_impossible_solutions(cells: Vec<Vec<(Cell, Vec<usize>)>>) -> Vec<Vec<(Cell, Vec<usize>)>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `reduce_possible_solution`
[INFO] [stdout]   --> src/solver.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn reduce_possible_solution(cells: Vec<Vec<(Cell, Vec<usize>)>>) -> Vec<Vec<(Cell, Vec<usize>)>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "134934aff737efc243e65be23f2e0a7e36801fabd5d1c7649636dca2e332af15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "134934aff737efc243e65be23f2e0a7e36801fabd5d1c7649636dca2e332af15", kill_on_drop: false }`
[INFO] [stdout] 134934aff737efc243e65be23f2e0a7e36801fabd5d1c7649636dca2e332af15