[INFO] cloning repository https://github.com/viso256/sudoku-generator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/viso256/sudoku-generator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fviso256%2Fsudoku-generator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fviso256%2Fsudoku-generator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5c5347dd2b76c4a9784b067b833c4c9e57622199
[INFO] checking viso256/sudoku-generator against 3154cc1a3e6424e44f438a95007d043ed5ceaaf6+rustflags=-Znext-solver=coherence for pr-133502-30
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fviso256%2Fsudoku-generator" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/viso256/sudoku-generator
[INFO] finished tweaking git repo https://github.com/viso256/sudoku-generator
[INFO] tweaked toml for git repo https://github.com/viso256/sudoku-generator written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/viso256/sudoku-generator on toolchain 3154cc1a3e6424e44f438a95007d043ed5ceaaf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3154cc1a3e6424e44f438a95007d043ed5ceaaf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/viso256/sudoku-generator 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" "+3154cc1a3e6424e44f438a95007d043ed5ceaaf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded typst-utils v0.15.1
[INFO] [stderr]   Downloaded typst-pdf v0.15.1
[INFO] [stderr]   Downloaded typst-timing v0.15.1
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[INFO] [stderr]   Downloaded thin-vec v0.2.20
[INFO] [stderr]   Downloaded postcard v1.1.3
[INFO] [stderr]   Downloaded unic-langid-macros-impl v0.9.6
[INFO] [stderr]   Downloaded typed-arena v2.0.2
[INFO] [stderr]   Downloaded cobs v0.3.0
[INFO] [stderr]   Downloaded wasmi_collections v1.1.0
[INFO] [stderr]   Downloaded unic-langid v0.9.6
[INFO] [stderr]   Downloaded unic-langid-macros v0.9.6
[INFO] [stderr]   Downloaded roman-numerals-rs v3.1.0
[INFO] [stderr]   Downloaded comemo-macros v0.5.1
[INFO] [stderr]   Downloaded enum-ordinalize v4.4.2
[INFO] [stderr]   Downloaded hayro-write v0.7.0
[INFO] [stderr]   Downloaded chinese-number v0.7.8
[INFO] [stderr]   Downloaded chinese-variant v1.1.6
[INFO] [stderr]   Downloaded unscanny v0.1.0
[INFO] [stderr]   Downloaded enum-ordinalize-derive v4.4.2
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[INFO] [stderr]   Downloaded ecow v0.2.6
[INFO] [stderr]   Downloaded comemo v0.5.1
[INFO] [stderr]   Downloaded icu_provider_blob v2.3.0
[INFO] [stderr]   Downloaded krilla-svg v0.8.1
[INFO] [stderr]   Downloaded xmp-writer v0.3.3
[INFO] [stderr]   Downloaded subsetter v0.2.6
[INFO] [stderr]   Downloaded typst v0.15.1
[INFO] [stderr]   Downloaded typst-svg v0.15.1
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[INFO] [stderr]   Downloaded wasmi_ir v1.1.0
[INFO] [stderr]   Downloaded lipsum v0.9.1
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[INFO] [stderr]   Downloaded codex v0.3.0
[INFO] [stderr]   Downloaded typst-realize v0.15.1
[INFO] [stderr]   Downloaded icu_locale v2.3.1
[INFO] [stderr]   Downloaded wasmi_core v1.1.0
[INFO] [stderr]   Downloaded citationberg v0.7.0
[INFO] [stderr]   Downloaded typst-html v0.15.1
[INFO] [stderr]   Downloaded typst-syntax v0.15.1
[INFO] [stderr]   Downloaded unic-langid-impl v0.9.6
[INFO] [stderr]   Downloaded biblatex v0.12.0
[INFO] [stderr]   Downloaded rust_decimal v1.43.0
[INFO] [stderr]   Downloaded krilla v0.8.2
[INFO] [stderr]   Downloaded typst-layout v0.15.1
[INFO] [stderr]   Downloaded wasmi v1.1.0
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[INFO] [stderr]   Downloaded write-fonts v0.48.1
[INFO] [stderr]   Downloaded hayagriva v0.10.1
[INFO] [stderr]   Downloaded icu_collator_data v2.3.0
[INFO] [stderr]   Downloaded typst-library v0.15.1
[INFO] [stderr]   Downloaded hypher v0.1.8
[INFO] [stderr]   Downloaded icu_collator v2.3.1
[INFO] [stderr]   Downloaded icu_locale_data v2.3.0
[INFO] [stderr]   Downloaded pdf-writer v0.15.0
[INFO] [stderr]   Downloaded two-face v0.4.5
[INFO] [stderr]   Downloaded typst-assets v0.15.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 341dd949c3631652730b645e442ea4e1794cbe51ef2080fd013eea3c1070ac7b
[INFO] running `Command { std: "docker" "start" "341dd949c3631652730b645e442ea4e1794cbe51ef2080fd013eea3c1070ac7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "341dd949c3631652730b645e442ea4e1794cbe51ef2080fd013eea3c1070ac7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "341dd949c3631652730b645e442ea4e1794cbe51ef2080fd013eea3c1070ac7b" "/opt/rustwide/cargo-home/bin/cargo" "+3154cc1a3e6424e44f438a95007d043ed5ceaaf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "341dd949c3631652730b645e442ea4e1794cbe51ef2080fd013eea3c1070ac7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Znext-solver=coherence" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "341dd949c3631652730b645e442ea4e1794cbe51ef2080fd013eea3c1070ac7b" "/opt/rustwide/cargo-home/bin/cargo" "+3154cc1a3e6424e44f438a95007d043ed5ceaaf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling quote v1.0.46
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]     Checking rand_core v0.10.1
[INFO] [stderr]    Compiling getrandom v0.4.3
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]     Checking chacha20 v0.10.0
[INFO] [stderr]    Compiling syn v2.0.118
[INFO] [stderr]     Checking rand v0.10.1
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]     Checking sudoku v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: cannot find module or crate `serde_json` in this scope
[INFO] [stdout]   --> src/sudoku.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |         serde_json::to_string_pretty(self).expect("failed to generate json")
[INFO] [stdout]    |         ^^^^^^^^^^ use of unresolved module or unlinked crate `serde_json`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `serde_json`, use `cargo add serde_json` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sudoku`
[INFO] [stdout]  --> src/solver/mod.rs:6:20
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn solve(self, sudoku: &mut SudokuGenerator) -> i32 {
[INFO] [stdout]   |                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_sudoku`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `serde_json` in this scope
[INFO] [stdout]   --> src/sudoku.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |         serde_json::to_string_pretty(self).expect("failed to generate json")
[INFO] [stdout]    |         ^^^^^^^^^^ use of unresolved module or unlinked crate `serde_json`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `serde_json`, use `cargo add serde_json` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sudoku`
[INFO] [stdout]  --> src/solver/mod.rs:6:20
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn solve(self, sudoku: &mut SudokuGenerator) -> i32 {
[INFO] [stdout]   |                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_sudoku`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sudoku` (lib) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sudoku` (lib test) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "341dd949c3631652730b645e442ea4e1794cbe51ef2080fd013eea3c1070ac7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "341dd949c3631652730b645e442ea4e1794cbe51ef2080fd013eea3c1070ac7b", kill_on_drop: false }`
[INFO] [stdout] 341dd949c3631652730b645e442ea4e1794cbe51ef2080fd013eea3c1070ac7b
