[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] building noraa-july-stoke/rust_dsna against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnoraa-july-stoke%2Frust_dsna" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/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-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/noraa-july-stoke/rust_dsna on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9a2bb291d597a40fd032af4c88c0010e83ac70ac54a3cfa010cf016f8bdd393f
[INFO] running `Command { std: "docker" "start" "-a" "9a2bb291d597a40fd032af4c88c0010e83ac70ac54a3cfa010cf016f8bdd393f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a2bb291d597a40fd032af4c88c0010e83ac70ac54a3cfa010cf016f8bdd393f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a2bb291d597a40fd032af4c88c0010e83ac70ac54a3cfa010cf016f8bdd393f", kill_on_drop: false }`
[INFO] [stdout] 9a2bb291d597a40fd032af4c88c0010e83ac70ac54a3cfa010cf016f8bdd393f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c16f969fa820404639dacc7486d20f91014ffbe4ced00ddecc8abd0d4938eb2f
[INFO] running `Command { std: "docker" "start" "-a" "c16f969fa820404639dacc7486d20f91014ffbe4ced00ddecc8abd0d4938eb2f", 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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) 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 0.75s
[INFO] running `Command { std: "docker" "inspect" "c16f969fa820404639dacc7486d20f91014ffbe4ced00ddecc8abd0d4938eb2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c16f969fa820404639dacc7486d20f91014ffbe4ced00ddecc8abd0d4938eb2f", kill_on_drop: false }`
[INFO] [stdout] c16f969fa820404639dacc7486d20f91014ffbe4ced00ddecc8abd0d4938eb2f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 14e5132643d0cf2a83608ac7b1fa83ea79699be82ce0c926b337da4dfba76eac
[INFO] running `Command { std: "docker" "start" "-a" "14e5132643d0cf2a83608ac7b1fa83ea79699be82ce0c926b337da4dfba76eac", 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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) 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 0.34s
[INFO] running `Command { std: "docker" "inspect" "14e5132643d0cf2a83608ac7b1fa83ea79699be82ce0c926b337da4dfba76eac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14e5132643d0cf2a83608ac7b1fa83ea79699be82ce0c926b337da4dfba76eac", kill_on_drop: false }`
[INFO] [stdout] 14e5132643d0cf2a83608ac7b1fa83ea79699be82ce0c926b337da4dfba76eac