[INFO] cloning repository https://github.com/lepelog/aoc21
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lepelog/aoc21" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flepelog%2Faoc21", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flepelog%2Faoc21'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 818a76feb323f71a681e0575f3ecd831dc56fcf3
[INFO] testing lepelog/aoc21 against beta-2025-09-21 for beta-1.91-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flepelog%2Faoc21" "/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/lepelog/aoc21
[INFO] finished tweaking git repo https://github.com/lepelog/aoc21
[INFO] tweaked toml for git repo https://github.com/lepelog/aoc21 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/lepelog/aoc21 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/lepelog/aoc21 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" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e9f79c8d1ddf235ea45bcb9c7b0bbdff07546047a70a0327c28b67bd0907a486
[INFO] running `Command { std: "docker" "start" "-a" "e9f79c8d1ddf235ea45bcb9c7b0bbdff07546047a70a0327c28b67bd0907a486", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e9f79c8d1ddf235ea45bcb9c7b0bbdff07546047a70a0327c28b67bd0907a486", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9f79c8d1ddf235ea45bcb9c7b0bbdff07546047a70a0327c28b67bd0907a486", kill_on_drop: false }`
[INFO] [stdout] e9f79c8d1ddf235ea45bcb9c7b0bbdff07546047a70a0327c28b67bd0907a486
[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=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" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7a54bbeab39d878314a4dcf0b8a742069117921ec8d78fdde9f1ae3a446ce14d
[INFO] running `Command { std: "docker" "start" "-a" "7a54bbeab39d878314a4dcf0b8a742069117921ec8d78fdde9f1ae3a446ce14d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling adv-code-21 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.43s
[INFO] running `Command { std: "docker" "inspect" "7a54bbeab39d878314a4dcf0b8a742069117921ec8d78fdde9f1ae3a446ce14d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a54bbeab39d878314a4dcf0b8a742069117921ec8d78fdde9f1ae3a446ce14d", kill_on_drop: false }`
[INFO] [stdout] 7a54bbeab39d878314a4dcf0b8a742069117921ec8d78fdde9f1ae3a446ce14d
[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=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" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c65683151b4b6d6fa7057609fda6d5a23a1f1b6108f3f455c00741331c498bd6
[INFO] running `Command { std: "docker" "start" "-a" "c65683151b4b6d6fa7057609fda6d5a23a1f1b6108f3f455c00741331c498bd6", kill_on_drop: false }`
[INFO] [stderr]    Compiling adv-code-21 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/11.rs:46:21
[INFO] [stdout]    |
[INFO] [stdout] 46 |                 let mut current_cell = &mut puzzle[x][y];
[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: variable does not need to be mutable
[INFO] [stdout]   --> examples/11.rs:67:29
[INFO] [stdout]    |
[INFO] [stdout] 67 |                         let mut other_cell = &mut puzzle[other_x][other_y];
[INFO] [stdout]    |                             ----^^^^^^^^^^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> examples/11.rs:101:21
[INFO] [stdout]     |
[INFO] [stdout] 101 |                 let mut other_cell = &mut puzzle[other_x][other_y];
[INFO] [stdout]     |                     ----^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part1_cost_fn` is never used
[INFO] [stdout]  --> examples/07.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn part1_cost_fn(pos: isize, target: isize) -> isize {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/14.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |     let mut current: Vec<_> = puzzle.start.bytes().collect();
[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: field `name` is never read
[INFO] [stdout]  --> examples/12.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Node {
[INFO] [stdout]   |        ---- field in this struct
[INFO] [stdout] 9 |     name: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 3.04s
[INFO] running `Command { std: "docker" "inspect" "c65683151b4b6d6fa7057609fda6d5a23a1f1b6108f3f455c00741331c498bd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c65683151b4b6d6fa7057609fda6d5a23a1f1b6108f3f455c00741331c498bd6", kill_on_drop: false }`
[INFO] [stdout] c65683151b4b6d6fa7057609fda6d5a23a1f1b6108f3f455c00741331c498bd6
[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=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" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b8ff242211f7938d46293ae67d551767a2bd966c4e952daee102593b7dfb09d8
[INFO] running `Command { std: "docker" "start" "-a" "b8ff242211f7938d46293ae67d551767a2bd966c4e952daee102593b7dfb09d8", kill_on_drop: false }`
[INFO] [stderr] warning: function `part1_cost_fn` is never used
[INFO] [stderr]  --> examples/07.rs:5:4
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn part1_cost_fn(pos: isize, target: isize) -> isize {
[INFO] [stderr]   |    ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `adv-code-21` (example "07") generated 1 warning
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/11.rs:46:21
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 let mut current_cell = &mut puzzle[x][y];
[INFO] [stderr]    |                     ----^^^^^^^^^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/11.rs:67:29
[INFO] [stderr]    |
[INFO] [stderr] 67 |                         let mut other_cell = &mut puzzle[other_x][other_y];
[INFO] [stderr]    |                             ----^^^^^^^^^^
[INFO] [stderr]    |                             |
[INFO] [stderr]    |                             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> examples/11.rs:101:21
[INFO] [stderr]     |
[INFO] [stderr] 101 |                 let mut other_cell = &mut puzzle[other_x][other_y];
[INFO] [stderr]     |                     ----^^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: `adv-code-21` (example "11") generated 3 warnings (run `cargo fix --example "11"` to apply 3 suggestions)
[INFO] [stderr] warning: field `name` is never read
[INFO] [stderr]  --> examples/12.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | struct Node {
[INFO] [stderr]   |        ---- field in this struct
[INFO] [stderr] 9 |     name: String,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `adv-code-21` (example "12") generated 1 warning
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/14.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |     let mut current: Vec<_> = puzzle.start.bytes().collect();
[INFO] [stderr]    |         ----^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `adv-code-21` (example "14") generated 1 warning (run `cargo fix --example "14"` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/adv_code_21-55c2f86e8ccee3ed)
[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" "b8ff242211f7938d46293ae67d551767a2bd966c4e952daee102593b7dfb09d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8ff242211f7938d46293ae67d551767a2bd966c4e952daee102593b7dfb09d8", kill_on_drop: false }`
[INFO] [stdout] b8ff242211f7938d46293ae67d551767a2bd966c4e952daee102593b7dfb09d8