[INFO] cloning repository https://github.com/noraa-july-stoke/rust_dsna
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/noraa-july-stoke/rust_dsna" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnoraa-july-stoke%2Frust_dsna", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnoraa-july-stoke%2Frust_dsna'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 62ae1b49d2034cc3d07f753481e2075ef253faa9
[INFO] testing noraa-july-stoke/rust_dsna against 1.90.0 for beta-1.91-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnoraa-july-stoke%2Frust_dsna" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/noraa-july-stoke/rust_dsna
[INFO] finished tweaking git repo https://github.com/noraa-july-stoke/rust_dsna
[INFO] tweaked toml for git repo https://github.com/noraa-july-stoke/rust_dsna written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/noraa-july-stoke/rust_dsna on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/noraa-july-stoke/rust_dsna 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 094cd250382b5bcd78c6a609a62471ec2603133251bf85eea1eb7d290aa4db71
[INFO] running `Command { std: "docker" "start" "-a" "094cd250382b5bcd78c6a609a62471ec2603133251bf85eea1eb7d290aa4db71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "094cd250382b5bcd78c6a609a62471ec2603133251bf85eea1eb7d290aa4db71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "094cd250382b5bcd78c6a609a62471ec2603133251bf85eea1eb7d290aa4db71", kill_on_drop: false }`
[INFO] [stdout] 094cd250382b5bcd78c6a609a62471ec2603133251bf85eea1eb7d290aa4db71
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 884f1192ca7a8fa537be9849ada23ea9e78db744ba633c027685fba788282208
[INFO] running `Command { std: "docker" "start" "-a" "884f1192ca7a8fa537be9849ada23ea9e78db744ba633c027685fba788282208", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_dsna v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/word_search.rs:34:17
[INFO] [stdout]    |
[INFO] [stdout] 34 |             let mut s_idx = 0;
[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 `exist` is never used
[INFO] [stdout]  --> src/word_search.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn exist(board: Vec<Vec<char>>, word: String) -> bool {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]   --> src/word_search.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |         if row < 0 || row >= board.len() || col < 0 || col >= board.len() || board[row][col] != word.chars().nth(s_idx).unwrap() {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]   --> src/word_search.rs:16:45
[INFO] [stdout]    |
[INFO] [stdout] 16 |         if row < 0 || row >= board.len() || col < 0 || col >= board.len() || board[row][col] != word.chars().nth(s_idx).unwrap() {
[INFO] [stdout]    |                                             ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "884f1192ca7a8fa537be9849ada23ea9e78db744ba633c027685fba788282208", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "884f1192ca7a8fa537be9849ada23ea9e78db744ba633c027685fba788282208", kill_on_drop: false }`
[INFO] [stdout] 884f1192ca7a8fa537be9849ada23ea9e78db744ba633c027685fba788282208
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5cba9db2ef26fde80b45af5a99d500236d460909adc275398940541ede6897ba
[INFO] running `Command { std: "docker" "start" "-a" "5cba9db2ef26fde80b45af5a99d500236d460909adc275398940541ede6897ba", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_dsna v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/word_search.rs:34:17
[INFO] [stdout]    |
[INFO] [stdout] 34 |             let mut s_idx = 0;
[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 `exist` is never used
[INFO] [stdout]  --> src/word_search.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn exist(board: Vec<Vec<char>>, word: String) -> bool {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]   --> src/word_search.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |         if row < 0 || row >= board.len() || col < 0 || col >= board.len() || board[row][col] != word.chars().nth(s_idx).unwrap() {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]   --> src/word_search.rs:16:45
[INFO] [stdout]    |
[INFO] [stdout] 16 |         if row < 0 || row >= board.len() || col < 0 || col >= board.len() || board[row][col] != word.chars().nth(s_idx).unwrap() {
[INFO] [stdout]    |                                             ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "5cba9db2ef26fde80b45af5a99d500236d460909adc275398940541ede6897ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cba9db2ef26fde80b45af5a99d500236d460909adc275398940541ede6897ba", kill_on_drop: false }`
[INFO] [stdout] 5cba9db2ef26fde80b45af5a99d500236d460909adc275398940541ede6897ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 756ddc93b83ec40f65619793060ec5314e498c0aa83231abfbc39840a7c860be
[INFO] running `Command { std: "docker" "start" "-a" "756ddc93b83ec40f65619793060ec5314e498c0aa83231abfbc39840a7c860be", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/word_search.rs:34:17
[INFO] [stderr]    |
[INFO] [stderr] 34 |             let mut s_idx = 0;
[INFO] [stderr]    |                 ----^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `exist` is never used
[INFO] [stderr]  --> src/word_search.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn exist(board: Vec<Vec<char>>, word: String) -> bool {
[INFO] [stderr]   |        ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]   --> src/word_search.rs:16:12
[INFO] [stderr]    |
[INFO] [stderr] 16 |         if row < 0 || row >= board.len() || col < 0 || col >= board.len() || board[row][col] != word.chars().nth(s_idx).unwrap() {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]   --> src/word_search.rs:16:45
[INFO] [stderr]    |
[INFO] [stderr] 16 |         if row < 0 || row >= board.len() || col < 0 || col >= board.len() || board[row][col] != word.chars().nth(s_idx).unwrap() {
[INFO] [stderr]    |                                             ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_dsna` (bin "rust_dsna" test) generated 4 warnings (run `cargo fix --bin "rust_dsna" --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_dsna-1003d323e76c1d58)
[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" "756ddc93b83ec40f65619793060ec5314e498c0aa83231abfbc39840a7c860be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "756ddc93b83ec40f65619793060ec5314e498c0aa83231abfbc39840a7c860be", kill_on_drop: false }`
[INFO] [stdout] 756ddc93b83ec40f65619793060ec5314e498c0aa83231abfbc39840a7c860be