[INFO] cloning repository https://github.com/simon-frankau/advent_of_code_2018
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/simon-frankau/advent_of_code_2018" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsimon-frankau%2Fadvent_of_code_2018", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsimon-frankau%2Fadvent_of_code_2018'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d06bb4fdd03f254596e7607e0ba846ffbc7c3290
[INFO] checking simon-frankau/advent_of_code_2018/d06bb4fdd03f254596e7607e0ba846ffbc7c3290 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsimon-frankau%2Fadvent_of_code_2018" "/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/simon-frankau/advent_of_code_2018
[INFO] finished tweaking git repo https://github.com/simon-frankau/advent_of_code_2018
[INFO] tweaked toml for git repo https://github.com/simon-frankau/advent_of_code_2018 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/simon-frankau/advent_of_code_2018 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/simon-frankau/advent_of_code_2018 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day18a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day09/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day14b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day05b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day02b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day07b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day16a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day17/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day19/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day06a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day23b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day22a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day13a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day13b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day18b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day12b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day08a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day08b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day25a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day04b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day05a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day10/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day16b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day01b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day24b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day04a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day20b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day07a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day11a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day06b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day03b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day14a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day20a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day21/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day22b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day24a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day11b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day15a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day03a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day02a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day12a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day01a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day15b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-4-tc1/source/day23a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7e3329b786d6ee82f63dce749fcf5c0380ca26eb90c5ce1a7f33c4aaa170bf59
[INFO] running `Command { std: "docker" "start" "-a" "7e3329b786d6ee82f63dce749fcf5c0380ca26eb90c5ce1a7f33c4aaa170bf59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7e3329b786d6ee82f63dce749fcf5c0380ca26eb90c5ce1a7f33c4aaa170bf59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e3329b786d6ee82f63dce749fcf5c0380ca26eb90c5ce1a7f33c4aaa170bf59", kill_on_drop: false }`
[INFO] [stdout] 7e3329b786d6ee82f63dce749fcf5c0380ca26eb90c5ce1a7f33c4aaa170bf59
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7b40b04a8da969656805f94475b2e7bd28876859d200d01b08cd0cfc6febf24e
[INFO] running `Command { std: "docker" "start" "-a" "7b40b04a8da969656805f94475b2e7bd28876859d200d01b08cd0cfc6febf24e", kill_on_drop: false }`
[INFO] [stderr] warning: /opt/rustwide/workdir/day15a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day23b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day13b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day03a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day01b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day11a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day18a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day04b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day02b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day06a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day04a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day06b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day08a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day14b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day17/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day01a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day19/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day20a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day05b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day10/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day24b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day03b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day09/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day11b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day16a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day23a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day05a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day20b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day02a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day07a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day08b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day12a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day12b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day24a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day25a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day14a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day13a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day18b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day21/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day22b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day22a/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day07b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day15b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/day16b/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Checking day17 v0.1.0 (/opt/rustwide/workdir/day17)
[INFO] [stderr]     Checking day01b v0.1.0 (/opt/rustwide/workdir/day01b)
[INFO] [stderr]     Checking day08a v0.1.0 (/opt/rustwide/workdir/day08a)
[INFO] [stderr]     Checking day18b v0.1.0 (/opt/rustwide/workdir/day18b)
[INFO] [stderr]     Checking day18a v0.1.0 (/opt/rustwide/workdir/day18a)
[INFO] [stderr]     Checking day06a v0.1.0 (/opt/rustwide/workdir/day06a)
[INFO] [stderr]     Checking day06b v0.1.0 (/opt/rustwide/workdir/day06b)
[INFO] [stderr]     Checking day24b v0.1.0 (/opt/rustwide/workdir/day24b)
[INFO] [stderr]     Checking day05a v0.1.0 (/opt/rustwide/workdir/day05a)
[INFO] [stderr]     Checking day03b v0.1.0 (/opt/rustwide/workdir/day03b)
[INFO] [stderr]     Checking day15a v0.1.0 (/opt/rustwide/workdir/day15a)
[INFO] [stderr]     Checking day14a v0.1.0 (/opt/rustwide/workdir/day14a)
[INFO] [stderr]     Checking day02b v0.1.0 (/opt/rustwide/workdir/day02b)
[INFO] [stderr]     Checking day20a v0.1.0 (/opt/rustwide/workdir/day20a)
[INFO] [stderr]     Checking day22b v0.1.0 (/opt/rustwide/workdir/day22b)
[INFO] [stdout] warning: field `max_x` is never read
[INFO] [stdout]   --> day17/src/main.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 81 | struct Reservoir {
[INFO] [stdout]    |        --------- field in this struct
[INFO] [stdout] 82 |     min_x: usize,
[INFO] [stdout] 83 |     max_x: usize,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking day12a v0.1.0 (/opt/rustwide/workdir/day12a)
[INFO] [stderr]     Checking day13a v0.1.0 (/opt/rustwide/workdir/day13a)
[INFO] [stderr]     Checking day13b v0.1.0 (/opt/rustwide/workdir/day13b)
[INFO] [stdout] warning: unused variable: `height`
[INFO] [stdout]   --> day18a/src/main.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let height = grid.len();
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_height`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `width`
[INFO] [stdout]   --> day18a/src/main.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |     let width = grid[0].len();
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_width`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `height`
[INFO] [stdout]   --> day18b/src/main.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |     let height = grid.len();
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_height`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `width`
[INFO] [stdout]   --> day18b/src/main.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |     let width = grid[0].len();
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_width`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_grid` is never used
[INFO] [stdout]  --> day18b/src/main.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn print_grid(grid: &VecDeque<Vec<char>>) {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking day16a v0.1.0 (/opt/rustwide/workdir/day16a)
[INFO] [stderr]     Checking day04b v0.1.0 (/opt/rustwide/workdir/day04b)
[INFO] [stderr]     Checking day07b v0.1.0 (/opt/rustwide/workdir/day07b)
[INFO] [stderr]     Checking day12b v0.1.0 (/opt/rustwide/workdir/day12b)
[INFO] [stderr]     Checking day16b v0.1.0 (/opt/rustwide/workdir/day16b)
[INFO] [stderr]     Checking day22a v0.1.0 (/opt/rustwide/workdir/day22a)
[INFO] [stderr]     Checking day10 v0.1.0 (/opt/rustwide/workdir/day10)
[INFO] [stderr]     Checking day19 v0.1.0 (/opt/rustwide/workdir/day19)
[INFO] [stderr]     Checking day21 v0.1.0 (/opt/rustwide/workdir/day21)
[INFO] [stdout] warning: field `opcode` is never read
[INFO] [stdout]  --> day16a/src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct TestCase {
[INFO] [stdout]   |        -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 8 |     opcode: usize,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `TestCase` 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]     Checking day02a v0.1.0 (/opt/rustwide/workdir/day02a)
[INFO] [stderr]     Checking day09 v0.1.0 (/opt/rustwide/workdir/day09)
[INFO] [stdout] warning: constant `PATTERN_SIZE` is never used
[INFO] [stdout]   --> day12b/src/main.rs:15:7
[INFO] [stdout]    |
[INFO] [stdout] 15 | const PATTERN_SIZE: i32 = 5;
[INFO] [stdout]    |       ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PATTERN_CENTRE` is never used
[INFO] [stdout]   --> day12b/src/main.rs:16:7
[INFO] [stdout]    |
[INFO] [stdout] 16 | const PATTERN_CENTRE: i32 = 2;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `GENERATIONS` is never used
[INFO] [stdout]   --> day12b/src/main.rs:17:7
[INFO] [stdout]    |
[INFO] [stdout] 17 | const GENERATIONS: i32 = 200;
[INFO] [stdout]    |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `State` is never constructed
[INFO] [stdout]   --> day12b/src/main.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct State {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `from_str`, `update`, and `score` are never used
[INFO] [stdout]   --> day12b/src/main.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl State {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] 24 |     fn from_str(str: &str) -> State {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 35 |     fn update(&self, plants: &HashSet<String>) -> State {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 56 |     fn score(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_map` is never used
[INFO] [stdout]   --> day12b/src/main.rs:73:4
[INFO] [stdout]    |
[INFO] [stdout] 73 | fn build_map() -> HashSet<String> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_erosion_levels` is never used
[INFO] [stdout]   --> day22a/src/main.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn print_erosion_levels(erosion_levels: &Vec<Vec<usize>>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking day23a v0.1.0 (/opt/rustwide/workdir/day23a)
[INFO] [stderr]     Checking day01a v0.1.0 (/opt/rustwide/workdir/day01a)
[INFO] [stderr]     Checking day08b v0.1.0 (/opt/rustwide/workdir/day08b)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> day19/src/main.rs:106:80
[INFO] [stdout]     |
[INFO] [stdout] 106 |     let ip: usize = lines.next().unwrap().replace("#ip ", "").parse().unwrap();;
[INFO] [stdout]     |                                                                                ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking day03a v0.1.0 (/opt/rustwide/workdir/day03a)
[INFO] [stderr]     Checking day11b v0.1.0 (/opt/rustwide/workdir/day11b)
[INFO] [stdout] warning: function `print_track` is never used
[INFO] [stdout]   --> day13b/src/main.rs:74:4
[INFO] [stdout]    |
[INFO] [stdout] 74 | fn print_track(grid: &Vec<Vec<char>>) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking day05b v0.1.0 (/opt/rustwide/workdir/day05b)
[INFO] [stderr]     Checking day07a v0.1.0 (/opt/rustwide/workdir/day07a)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> day19/src/main.rs:106:80
[INFO] [stdout]     |
[INFO] [stdout] 106 |     let ip: usize = lines.next().unwrap().replace("#ip ", "").parse().unwrap();;
[INFO] [stdout]     |                                                                                ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `r1` is never read
[INFO] [stdout]  --> day21/src/main.rs:7:23
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut r1: i64 = 0;
[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] [stderr]     Checking day24a v0.1.0 (/opt/rustwide/workdir/day24a)
[INFO] [stderr]     Checking day04a v0.1.0 (/opt/rustwide/workdir/day04a)
[INFO] [stdout] warning: unused variable: `height`
[INFO] [stdout]   --> day18a/src/main.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let height = grid.len();
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_height`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `width`
[INFO] [stdout]   --> day18a/src/main.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |     let width = grid[0].len();
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_width`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking day25a v0.1.0 (/opt/rustwide/workdir/day25a)
[INFO] [stderr]     Checking day15b v0.1.0 (/opt/rustwide/workdir/day15b)
[INFO] [stderr]     Checking day20b v0.1.0 (/opt/rustwide/workdir/day20b)
[INFO] [stderr]     Checking day14b v0.1.0 (/opt/rustwide/workdir/day14b)
[INFO] [stderr]     Checking day23b v0.1.0 (/opt/rustwide/workdir/day23b)
[INFO] [stderr]     Checking day11a v0.1.0 (/opt/rustwide/workdir/day11a)
[INFO] [stdout] warning: field `max_x` is never read
[INFO] [stdout]   --> day17/src/main.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 81 | struct Reservoir {
[INFO] [stdout]    |        --------- field in this struct
[INFO] [stdout] 82 |     min_x: usize,
[INFO] [stdout] 83 |     max_x: usize,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PATTERN_SIZE` is never used
[INFO] [stdout]   --> day12b/src/main.rs:15:7
[INFO] [stdout]    |
[INFO] [stdout] 15 | const PATTERN_SIZE: i32 = 5;
[INFO] [stdout]    |       ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PATTERN_CENTRE` is never used
[INFO] [stdout]   --> day12b/src/main.rs:16:7
[INFO] [stdout]    |
[INFO] [stdout] 16 | const PATTERN_CENTRE: i32 = 2;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `GENERATIONS` is never used
[INFO] [stdout]   --> day12b/src/main.rs:17:7
[INFO] [stdout]    |
[INFO] [stdout] 17 | const GENERATIONS: i32 = 200;
[INFO] [stdout]    |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `State` is never constructed
[INFO] [stdout]   --> day12b/src/main.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct State {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `from_str`, `update`, and `score` are never used
[INFO] [stdout]   --> day12b/src/main.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl State {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] 24 |     fn from_str(str: &str) -> State {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 35 |     fn update(&self, plants: &HashSet<String>) -> State {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 56 |     fn score(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_map` is never used
[INFO] [stdout]   --> day12b/src/main.rs:73:4
[INFO] [stdout]    |
[INFO] [stdout] 73 | fn build_map() -> HashSet<String> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `opcode` is never read
[INFO] [stdout]  --> day16a/src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct TestCase {
[INFO] [stdout]   |        -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 8 |     opcode: usize,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `TestCase` 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] [stdout] warning: value assigned to `r1` is never read
[INFO] [stdout]  --> day21/src/main.rs:7:23
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut r1: i64 = 0;
[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: unused variable: `elf_power`
[INFO] [stdout]    --> day15b/src/main.rs:361:9
[INFO] [stdout]     |
[INFO] [stdout] 361 |     let elf_power = 4;
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_elf_power`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `disp` is never used
[INFO] [stdout]   --> day15b/src/main.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl Square {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 50 |     fn disp(&self) -> char {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_grid` is never used
[INFO] [stdout]   --> day15b/src/main.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn print_grid(grid: &Vec<Vec<Square>>) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_units` is never used
[INFO] [stdout]   --> day15b/src/main.rs:71:4
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn print_units(grid: &Vec<Vec<Square>>) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_erosion_levels` is never used
[INFO] [stdout]   --> day22a/src/main.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn print_erosion_levels(erosion_levels: &Vec<Vec<usize>>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `elf_power`
[INFO] [stdout]    --> day15b/src/main.rs:361:9
[INFO] [stdout]     |
[INFO] [stdout] 361 |     let elf_power = 4;
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_elf_power`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_track` is never used
[INFO] [stdout]   --> day13b/src/main.rs:74:4
[INFO] [stdout]    |
[INFO] [stdout] 74 | fn print_track(grid: &Vec<Vec<char>>) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `disp` is never used
[INFO] [stdout]   --> day15b/src/main.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl Square {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 50 |     fn disp(&self) -> char {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_grid` is never used
[INFO] [stdout]   --> day15b/src/main.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn print_grid(grid: &Vec<Vec<Square>>) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_units` is never used
[INFO] [stdout]   --> day15b/src/main.rs:71:4
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn print_units(grid: &Vec<Vec<Square>>) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `height`
[INFO] [stdout]   --> day18b/src/main.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |     let height = grid.len();
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_height`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `width`
[INFO] [stdout]   --> day18b/src/main.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |     let width = grid[0].len();
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_width`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_grid` is never used
[INFO] [stdout]  --> day18b/src/main.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn print_grid(grid: &VecDeque<Vec<char>>) {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.97s
[INFO] running `Command { std: "docker" "inspect" "7b40b04a8da969656805f94475b2e7bd28876859d200d01b08cd0cfc6febf24e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b40b04a8da969656805f94475b2e7bd28876859d200d01b08cd0cfc6febf24e", kill_on_drop: false }`
[INFO] [stdout] 7b40b04a8da969656805f94475b2e7bd28876859d200d01b08cd0cfc6febf24e