[INFO] cloning repository https://github.com/ryan-m-walker/advent-of-code-2025
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ryan-m-walker/advent-of-code-2025" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryan-m-walker%2Fadvent-of-code-2025", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryan-m-walker%2Fadvent-of-code-2025'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 576564ae3647dc60b195cf2e921df874b475bafa
[INFO] fixing ryan-m-walker/advent-of-code-2025 against try#622891a4e29178280638a6b63a8908bde2c0c854+cargoflags=-Zfix-edition=start=2015 for pr-157817-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryan-m-walker%2Fadvent-of-code-2025" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ryan-m-walker/advent-of-code-2025
[INFO] finished tweaking git repo https://github.com/ryan-m-walker/advent-of-code-2025
[INFO] tweaked toml for git repo https://github.com/ryan-m-walker/advent-of-code-2025 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ryan-m-walker/advent-of-code-2025 on toolchain 622891a4e29178280638a6b63a8908bde2c0c854
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ryan-m-walker/advent-of-code-2025 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" "+622891a4e29178280638a6b63a8908bde2c0c854" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 1b736535138267a97c5a1782eef739ab5442de9863b9a6159c8531c66315153b
[INFO] running `Command { std: "docker" "start" "1b736535138267a97c5a1782eef739ab5442de9863b9a6159c8531c66315153b", 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" "1b736535138267a97c5a1782eef739ab5442de9863b9a6159c8531c66315153b" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1b736535138267a97c5a1782eef739ab5442de9863b9a6159c8531c66315153b", 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=" "-e" "RUSTDOCFLAGS=" "-w" "/opt/rustwide/workdir" "--user" "0:0" "1b736535138267a97c5a1782eef739ab5442de9863b9a6159c8531c66315153b" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fix" "--allow-no-vcs" "--allow-dirty" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zfix-edition=start=2015", kill_on_drop: false }`
[INFO] [stderr]     Checking day_01 v0.1.0 (/opt/rustwide/workdir/day_01)
[INFO] [stderr]     Checking day_02 v0.1.0 (/opt/rustwide/workdir/day_02)
[INFO] [stderr]     Checking day_03 v0.1.0 (/opt/rustwide/workdir/day_03)
[INFO] [stderr]     Checking day_04 v0.1.0 (/opt/rustwide/workdir/day_04)
[INFO] [stdout] error[E0601]: `main` function not found in crate `day_04`
[INFO] [stdout]    --> day_04/src/main.rs:126:2
[INFO] [stdout]     |
[INFO] [stdout] 126 | }
[INFO] [stdout]     |  ^ consider adding a `main` function to `day_04/src/main.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `day_04` (bin "day_04") due to 1 previous error
[INFO] [stdout] warning: variable `a_idx` is assigned to, but never used
[INFO] [stdout]   --> day_03/src/lib.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |         let mut a_idx = 0;
[INFO] [stdout]    |             ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_a_idx` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: variable `b_idx` is assigned to, but never used
[INFO] [stdout]   --> day_03/src/lib.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let mut b_idx = len;
[INFO] [stdout]    |             ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_b_idx` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `a_idx` is never read
[INFO] [stdout]   --> day_03/src/lib.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 26 |                 a_idx = n;
[INFO] [stdout]    |                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b_idx` is never read
[INFO] [stdout]   --> day_03/src/lib.rs:31:17
[INFO] [stdout]    |
[INFO] [stdout] 31 |                 b_idx = len - 1;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output`
[INFO] [stdout]   --> day_03/src/lib.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |         let output = part_1(&input);
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `a_idx` is assigned to, but never used
[INFO] [stdout]   --> day_03/src/lib.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |         let mut a_idx = 0;
[INFO] [stdout]    |             ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_a_idx` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `b_idx` is assigned to, but never used
[INFO] [stdout]   --> day_03/src/lib.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let mut b_idx = len;
[INFO] [stdout]    |             ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_b_idx` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `a_idx` is never read
[INFO] [stdout]   --> day_03/src/lib.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 26 |                 a_idx = n;
[INFO] [stdout]    |                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b_idx` is never read
[INFO] [stdout]   --> day_03/src/lib.rs:31:17
[INFO] [stdout]    |
[INFO] [stdout] 31 |                 b_idx = len - 1;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1b736535138267a97c5a1782eef739ab5442de9863b9a6159c8531c66315153b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b736535138267a97c5a1782eef739ab5442de9863b9a6159c8531c66315153b", kill_on_drop: false }`
[INFO] [stdout] 1b736535138267a97c5a1782eef739ab5442de9863b9a6159c8531c66315153b
