[INFO] cloning repository https://github.com/debasish-raychawdhuri/sudoku
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/debasish-raychawdhuri/sudoku" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdebasish-raychawdhuri%2Fsudoku", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdebasish-raychawdhuri%2Fsudoku'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e1b1e52abd22a53ac0db1d4981b65ce064a6b536
[INFO] checking debasish-raychawdhuri/sudoku/e1b1e52abd22a53ac0db1d4981b65ce064a6b536 against master#4cf5f9580233c36f6bc8db76e282ba8a1c1ea491 for pr-154585
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdebasish-raychawdhuri%2Fsudoku" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/debasish-raychawdhuri/sudoku
[INFO] finished tweaking git repo https://github.com/debasish-raychawdhuri/sudoku
[INFO] tweaked toml for git repo https://github.com/debasish-raychawdhuri/sudoku written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/debasish-raychawdhuri/sudoku on toolchain 4cf5f9580233c36f6bc8db76e282ba8a1c1ea491
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4cf5f9580233c36f6bc8db76e282ba8a1c1ea491" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/debasish-raychawdhuri/sudoku already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4cf5f9580233c36f6bc8db76e282ba8a1c1ea491" "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-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+4cf5f9580233c36f6bc8db76e282ba8a1c1ea491" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8a4062d91ce20ffb09536b9bcc076951c4baec27db5f17227458849f9657fc6d
[INFO] running `Command { std: "docker" "start" "-a" "8a4062d91ce20ffb09536b9bcc076951c4baec27db5f17227458849f9657fc6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a4062d91ce20ffb09536b9bcc076951c4baec27db5f17227458849f9657fc6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a4062d91ce20ffb09536b9bcc076951c4baec27db5f17227458849f9657fc6d", kill_on_drop: false }`
[INFO] [stdout] 8a4062d91ce20ffb09536b9bcc076951c4baec27db5f17227458849f9657fc6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+4cf5f9580233c36f6bc8db76e282ba8a1c1ea491" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f593c643b542f02ee022515f0b0b2c30882953543f071d8dadf154012c1f870a
[INFO] running `Command { std: "docker" "start" "-a" "f593c643b542f02ee022515f0b0b2c30882953543f071d8dadf154012c1f870a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling unicode-ident v1.0.16
[INFO] [stderr]    Compiling glob v0.3.2
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling bindgen v0.66.1
[INFO] [stderr]    Compiling bitflags v2.8.0
[INFO] [stderr]    Compiling libloading v0.8.6
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling serde_json v1.0.143
[INFO] [stderr]     Checking half v2.6.0
[INFO] [stderr]     Checking log v0.4.25
[INFO] [stderr]     Checking clap_builder v4.5.46
[INFO] [stderr]    Compiling clang-sys v1.8.1
[INFO] [stderr]     Checking ciborium-ll v0.2.2
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]     Checking clap v4.5.46
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]    Compiling syn v2.0.98
[INFO] [stderr]     Checking is-terminal v0.4.16
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling z3-sys v0.8.1
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.5.1
[INFO] [stderr]     Checking z3 v0.12.1
[INFO] [stderr]     Checking sudoku v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> benches/sudoku_benchmark.rs:74:10
[INFO] [stdout]    |
[INFO] [stdout] 74 |     for (i, (problem, difficulty)) in test_problems.iter().enumerate() {
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_external_constraints` is never used
[INFO] [stdout]  --> src/z3solver.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn add_external_constraints<'a>(
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_constants` is never used
[INFO] [stdout]   --> src/z3solver.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn add_constants<'a>(context: &'a Context) -> Vec<Vec<Vec<Bool<'a>>>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_solution` is never used
[INFO] [stdout]   --> src/z3solver.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn get_solution<'a>(solver: &'a Solver, constants: &[Vec<Vec<Bool<'a>>>]) -> Vec<Vec<i32>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve_sudoku` is never used
[INFO] [stdout]   --> src/z3solver.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub fn solve_sudoku(sudoku_problem: &[[i32; 9]; 9]) -> Vec<Vec<i32>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_sudoku_constraints` is never used
[INFO] [stdout]   --> src/z3solver.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn add_sudoku_constraints(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exactly_one_per_cell` is never used
[INFO] [stdout]   --> src/z3solver.rs:75:4
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn exactly_one_per_cell<'a>(context: &'a Context, constants: &'a [Vec<Vec<Bool<'a>>>]) -> Bool<'a> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exactly_one_per_box` is never used
[INFO] [stdout]   --> src/z3solver.rs:89:4
[INFO] [stdout]    |
[INFO] [stdout] 89 | fn exactly_one_per_box<'a>(context: &'a Context, constants: &'a [Vec<Vec<Bool<'a>>>]) -> Bool<'a> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exactly_one_per_col` is never used
[INFO] [stdout]    --> src/z3solver.rs:108:4
[INFO] [stdout]     |
[INFO] [stdout] 108 | fn exactly_one_per_col<'a>(context: &'a Context, constants: &'a [Vec<Vec<Bool<'a>>>]) -> Bool<'a> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exactly_one_per_row` is never used
[INFO] [stdout]    --> src/z3solver.rs:129:4
[INFO] [stdout]     |
[INFO] [stdout] 129 | fn exactly_one_per_row<'a>(context: &'a Context, constants: &'a [Vec<Vec<Bool<'a>>>]) -> Bool<'a> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exactly_one` is never used
[INFO] [stdout]    --> src/z3solver.rs:143:4
[INFO] [stdout]     |
[INFO] [stdout] 143 | fn exactly_one<'a>(context: &'a Context, constants: &[&'a Bool]) -> Bool<'a> {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 35.16s
[INFO] running `Command { std: "docker" "inspect" "f593c643b542f02ee022515f0b0b2c30882953543f071d8dadf154012c1f870a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f593c643b542f02ee022515f0b0b2c30882953543f071d8dadf154012c1f870a", kill_on_drop: false }`
[INFO] [stdout] f593c643b542f02ee022515f0b0b2c30882953543f071d8dadf154012c1f870a