[INFO] cloning repository https://github.com/tinyCatzilla/sudoku
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tinyCatzilla/sudoku" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FtinyCatzilla%2Fsudoku", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FtinyCatzilla%2Fsudoku'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 00acbb36685ca401c4e4535684c176b68980c2a5
[INFO] checking tinyCatzilla/sudoku against master#d49be02cf6d2e2a01264fcdef1e20c826710c0f5 for pr-133570-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FtinyCatzilla%2Fsudoku" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tinyCatzilla/sudoku on toolchain d49be02cf6d2e2a01264fcdef1e20c826710c0f5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d49be02cf6d2e2a01264fcdef1e20c826710c0f5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tinyCatzilla/sudoku
[INFO] finished tweaking git repo https://github.com/tinyCatzilla/sudoku
[INFO] tweaked toml for git repo https://github.com/tinyCatzilla/sudoku written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/tinyCatzilla/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" "+d49be02cf6d2e2a01264fcdef1e20c826710c0f5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded gnuplot v0.0.39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+d49be02cf6d2e2a01264fcdef1e20c826710c0f5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 83a5d6968ad633e9dc41acd6a6cea60e69a801195297fdd79aceb76f54220a28
[INFO] running `Command { std: "docker" "start" "-a" "83a5d6968ad633e9dc41acd6a6cea60e69a801195297fdd79aceb76f54220a28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "83a5d6968ad633e9dc41acd6a6cea60e69a801195297fdd79aceb76f54220a28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83a5d6968ad633e9dc41acd6a6cea60e69a801195297fdd79aceb76f54220a28", kill_on_drop: false }`
[INFO] [stdout] 83a5d6968ad633e9dc41acd6a6cea60e69a801195297fdd79aceb76f54220a28
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+d49be02cf6d2e2a01264fcdef1e20c826710c0f5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0b1459f0ae1c3221e6c6dd7cd1fae4ac2ffa0c8936cf793e0743ed0ed4f2901b
[INFO] running `Command { std: "docker" "start" "-a" "0b1459f0ae1c3221e6c6dd7cd1fae4ac2ffa0c8936cf793e0743ed0ed4f2901b", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling serde v1.0.171
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]     Checking tracing-core v0.1.31
[INFO] [stderr]     Checking ryu v1.0.15
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[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]    Compiling rustix v0.38.4
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
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[INFO] [stderr]    Compiling quote v1.0.31
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
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[INFO] [stderr]     Checking dirs-sys-next v0.1.2
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[INFO] [stderr]    Compiling serde_derive v1.0.171
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[INFO] [stderr]     Checking clap v3.2.25
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[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking color-eyre v0.6.2
[INFO] [stderr]     Checking regex v1.9.1
[INFO] [stderr]     Checking csv v1.2.2
[INFO] [stderr]     Checking ciborium v0.2.1
[INFO] [stderr]     Checking prettytable-rs v0.10.0
[INFO] [stderr]     Checking sudoku v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `cross` is never used
[INFO] [stdout]  --> src/utils.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn cross<A: Clone  + std::fmt::Display, B: Clone + std::fmt::Display>(a: &[A], b: &[B]) -> Vec<String> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `coords_to_cell` is never used
[INFO] [stdout]   --> src/utils.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn coords_to_cell(row: usize, col: usize) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cell_to_coords` is never used
[INFO] [stdout]   --> src/utils.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn cell_to_coords(cell: &str) -> (usize, usize) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Cell`, `Row`, and `Table`
[INFO] [stdout]  --> src/main.rs:8:19
[INFO] [stdout]   |
[INFO] [stdout] 8 | use prettytable::{Table, Row, Cell};
[INFO] [stdout]   |                   ^^^^^  ^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stdout] warning: value assigned to `index` is never read
[INFO] [stdout]    --> src/sudoku.rs:579:25
[INFO] [stdout]     |
[INFO] [stdout] 579 |                         index -= 1;
[INFO] [stdout]     |                         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking criterion v0.4.0
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]   --> src/main.rs:48:17
[INFO] [stdout]    |
[INFO] [stdout] 48 |             let result = solver.solve(&mut sudoku_clone);
[INFO] [stdout]    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let mut reader = BufReader::new(file);
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cross` is never used
[INFO] [stdout]  --> src/utils.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn cross<A: Clone  + std::fmt::Display, B: Clone + std::fmt::Display>(a: &[A], b: &[B]) -> Vec<String> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `coords_to_cell` is never used
[INFO] [stdout]   --> src/utils.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn coords_to_cell(row: usize, col: usize) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cell_to_coords` is never used
[INFO] [stdout]   --> src/utils.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn cell_to_coords(cell: &str) -> (usize, usize) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Cell`, `Row`, and `Table`
[INFO] [stdout]  --> src/main.rs:8:19
[INFO] [stdout]   |
[INFO] [stdout] 8 | use prettytable::{Table, Row, Cell};
[INFO] [stdout]   |                   ^^^^^  ^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `index` is never read
[INFO] [stdout]    --> src/sudoku.rs:579:25
[INFO] [stdout]     |
[INFO] [stdout] 579 |                         index -= 1;
[INFO] [stdout]     |                         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]   --> src/main.rs:48:17
[INFO] [stdout]    |
[INFO] [stdout] 48 |             let result = solver.solve(&mut sudoku_clone);
[INFO] [stdout]    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let mut reader = BufReader::new(file);
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 42.95s
[INFO] running `Command { std: "docker" "inspect" "0b1459f0ae1c3221e6c6dd7cd1fae4ac2ffa0c8936cf793e0743ed0ed4f2901b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b1459f0ae1c3221e6c6dd7cd1fae4ac2ffa0c8936cf793e0743ed0ed4f2901b", kill_on_drop: false }`
[INFO] [stdout] 0b1459f0ae1c3221e6c6dd7cd1fae4ac2ffa0c8936cf793e0743ed0ed4f2901b