[INFO] cloning repository https://github.com/hangj/advent-of-code
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hangj/advent-of-code" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhangj%2Fadvent-of-code", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhangj%2Fadvent-of-code'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5c3e06570cfb0dc5297c4661f00df01640d6d417
[INFO] checking hangj/advent-of-code against 67a539cbdf2a0107837ce64f9069509a44da67b7 for pr-164053
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhangj%2Fadvent-of-code" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/hangj/advent-of-code
[INFO] finished tweaking git repo https://github.com/hangj/advent-of-code
[INFO] tweaked toml for git repo https://github.com/hangj/advent-of-code written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/hangj/advent-of-code on toolchain 67a539cbdf2a0107837ce64f9069509a44da67b7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+67a539cbdf2a0107837ce64f9069509a44da67b7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/hangj/advent-of-code 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" "+67a539cbdf2a0107837ce64f9069509a44da67b7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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] 139fb5a179a24b487e5b5b41b5c50b0018016a3e06a9d2049e3b5af4dd2a70bd
[INFO] running `Command { std: "docker" "start" "139fb5a179a24b487e5b5b41b5c50b0018016a3e06a9d2049e3b5af4dd2a70bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "139fb5a179a24b487e5b5b41b5c50b0018016a3e06a9d2049e3b5af4dd2a70bd", 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" "139fb5a179a24b487e5b5b41b5c50b0018016a3e06a9d2049e3b5af4dd2a70bd" "/opt/rustwide/cargo-home/bin/cargo" "+67a539cbdf2a0107837ce64f9069509a44da67b7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "139fb5a179a24b487e5b5b41b5c50b0018016a3e06a9d2049e3b5af4dd2a70bd", 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" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "139fb5a179a24b487e5b5b41b5c50b0018016a3e06a9d2049e3b5af4dd2a70bd" "/opt/rustwide/cargo-home/bin/cargo" "+67a539cbdf2a0107837ce64f9069509a44da67b7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking adventofcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `HashMap`
[INFO] [stdout]  --> src/day6.rs:1:86
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{path::PathBuf, io::{BufReader, BufRead}, fs::File, collections::{VecDeque, HashMap, HashSet}};
[INFO] [stdout]   |                                                                                      ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `liballoc_internals`
[INFO] [stdout]   --> src/day5.rs:69:39
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let mut vec_all: Vec<Vec<char>> = std::vec::from_elem(Vec::new(), matrix[0].len());
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: add `#![feature(liballoc_internals)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-10-09; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashMap`
[INFO] [stdout]  --> src/day6.rs:1:86
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{path::PathBuf, io::{BufReader, BufRead}, fs::File, collections::{VecDeque, HashMap, HashSet}};
[INFO] [stdout]   |                                                                                      ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `liballoc_internals`
[INFO] [stdout]   --> src/day5.rs:69:39
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let mut vec_all: Vec<Vec<char>> = std::vec::from_elem(Vec::new(), matrix[0].len());
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: add `#![feature(liballoc_internals)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-10-09; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/day5.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 |     let mut v2 = vec![4,5,6,7,8];
[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] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `adventofcode` (bin "adventofcode" test) due to 1 previous error; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `adventofcode` (bin "adventofcode") due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "139fb5a179a24b487e5b5b41b5c50b0018016a3e06a9d2049e3b5af4dd2a70bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "139fb5a179a24b487e5b5b41b5c50b0018016a3e06a9d2049e3b5af4dd2a70bd", kill_on_drop: false }`
[INFO] [stdout] 139fb5a179a24b487e5b5b41b5c50b0018016a3e06a9d2049e3b5af4dd2a70bd
